./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/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_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/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_dac79f9a-7475-43f9-8216-2df90988b9fd/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 881c8a19bc7d985c1c357993fa89c98038c14e3d30b81b5db0457e690440ac95 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:56:27,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:56:27,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:56:27,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:56:27,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:56:27,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:56:27,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:56:27,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:56:27,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:56:27,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:56:27,835 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:56:27,836 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:56:27,836 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:56:27,837 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:56:27,838 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:56:27,838 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:56:27,839 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:56:27,840 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:56:27,840 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:56:27,841 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:56:27,842 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:56:27,843 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:56:27,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:56:27,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:56:27,845 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:56:27,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:56:27,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:56:27,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:56:27,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:56:27,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:56:27,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:56:27,850 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:56:27,850 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:56:27,854 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:56:27,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:56:27,855 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:56:27,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:56:27,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:56:27,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:56:27,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:56:27,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:56:27,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:56:27,865 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:56:27,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:56:27,866 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:56:27,866 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:56:27,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:56:27,867 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_dac79f9a-7475-43f9-8216-2df90988b9fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 881c8a19bc7d985c1c357993fa89c98038c14e3d30b81b5db0457e690440ac95 [2023-11-19 04:56:28,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:56:28,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:56:28,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:56:28,179 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:56:28,179 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:56:28,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c [2023-11-19 04:56:31,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:56:31,642 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:56:31,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c [2023-11-19 04:56:31,651 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/data/66361d824/9aab2758da964607ac6f117ea08a2929/FLAG25692b662 [2023-11-19 04:56:31,665 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/data/66361d824/9aab2758da964607ac6f117ea08a2929 [2023-11-19 04:56:31,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:56:31,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:56:31,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:56:31,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:56:31,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:56:31,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af48034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31, skipping insertion in model container [2023-11-19 04:56:31,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:56:31,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:56:31,895 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:56:31,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:56:31,931 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:56:31,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31 WrapperNode [2023-11-19 04:56:31,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:56:31,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:56:31,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:56:31,933 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:56:31,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,968 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-19 04:56:31,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:56:31,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:56:31,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:56:31,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:56:31,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:31,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:56:31,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:56:31,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:56:31,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:56:31,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (1/1) ... [2023-11-19 04:56:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:56:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:32,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:56:32,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:56:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:56:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:56:32,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:56:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:56:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:56:32,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:56:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:56:32,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:56:32,149 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:56:32,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:56:32,538 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:56:32,575 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:56:32,575 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:56:32,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:32 BoogieIcfgContainer [2023-11-19 04:56:32,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:56:32,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:56:32,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:56:32,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:56:32,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:56:31" (1/3) ... [2023-11-19 04:56:32,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7e883d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:32, skipping insertion in model container [2023-11-19 04:56:32,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:56:31" (2/3) ... [2023-11-19 04:56:32,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7e883d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:56:32, skipping insertion in model container [2023-11-19 04:56:32,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:56:32" (3/3) ... [2023-11-19 04:56:32,593 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound10.c [2023-11-19 04:56:32,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:56:32,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 04:56:32,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:56:32,671 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@68dbed2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:56:32,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-19 04:56:32,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 04:56:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:56:32,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:32,687 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:32,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:32,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1594958416, now seen corresponding path program 1 times [2023-11-19 04:56:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:32,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586202177] [2023-11-19 04:56:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:32,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:32,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942600924] [2023-11-19 04:56:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:32,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:32,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:32,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:56:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:32,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:56:32,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:33,002 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 04:56:33,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:33,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586202177] [2023-11-19 04:56:33,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942600924] [2023-11-19 04:56:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942600924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:33,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:56:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880871630] [2023-11-19 04:56:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:56:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:56:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:56:33,069 INFO L87 Difference]: Start difference. First operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:56:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:33,206 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2023-11-19 04:56:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:56:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 14 [2023-11-19 04:56:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:33,219 INFO L225 Difference]: With dead ends: 182 [2023-11-19 04:56:33,220 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 04:56:33,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 04:56:33,229 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 19 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:33,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 152 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:33,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 04:56:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2023-11-19 04:56:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 71 states have internal predecessors, (73), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:56:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2023-11-19 04:56:33,284 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 14 [2023-11-19 04:56:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:33,285 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2023-11-19 04:56:33,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 04:56:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2023-11-19 04:56:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:56:33,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:33,287 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:33,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:56:33,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:33,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:33,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 305693573, now seen corresponding path program 1 times [2023-11-19 04:56:33,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:33,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973648458] [2023-11-19 04:56:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:33,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:33,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:33,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145423419] [2023-11-19 04:56:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:33,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:33,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:56:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:33,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:56:33,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:33,658 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 04:56:33,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:33,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973648458] [2023-11-19 04:56:33,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:33,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145423419] [2023-11-19 04:56:33,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145423419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:33,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:33,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:56:33,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772871773] [2023-11-19 04:56:33,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:33,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:56:33,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:56:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:56:33,665 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 04:56:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:33,826 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2023-11-19 04:56:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:56:33,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 19 [2023-11-19 04:56:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:33,829 INFO L225 Difference]: With dead ends: 148 [2023-11-19 04:56:33,831 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 04:56:33,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 04:56:33,834 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 53 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 121 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 04:56:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 114. [2023-11-19 04:56:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 96 states have internal predecessors, (116), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 04:56:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 146 transitions. [2023-11-19 04:56:33,862 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 146 transitions. Word has length 19 [2023-11-19 04:56:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:33,863 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 146 transitions. [2023-11-19 04:56:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 04:56:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 146 transitions. [2023-11-19 04:56:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:56:33,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:33,865 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:33,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:34,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:34,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:34,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1713749287, now seen corresponding path program 1 times [2023-11-19 04:56:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:34,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692351926] [2023-11-19 04:56:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:34,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:34,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417395640] [2023-11-19 04:56:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:34,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:34,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:34,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:34,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:56:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:34,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:56:34,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:34,325 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 04:56:34,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:34,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692351926] [2023-11-19 04:56:34,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417395640] [2023-11-19 04:56:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417395640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:34,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:34,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948688309] [2023-11-19 04:56:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:34,329 INFO L87 Difference]: Start difference. First operand 114 states and 146 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 04:56:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:34,490 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2023-11-19 04:56:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:34,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 21 [2023-11-19 04:56:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:34,493 INFO L225 Difference]: With dead ends: 138 [2023-11-19 04:56:34,493 INFO L226 Difference]: Without dead ends: 135 [2023-11-19 04:56:34,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 04:56:34,495 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 160 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:34,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 120 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-19 04:56:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 115. [2023-11-19 04:56:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 97 states have internal predecessors, (115), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 04:56:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2023-11-19 04:56:34,516 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 21 [2023-11-19 04:56:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2023-11-19 04:56:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 04:56:34,517 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2023-11-19 04:56:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 04:56:34,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:34,518 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] [2023-11-19 04:56:34,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:34,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:34,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:34,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:34,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1586620404, now seen corresponding path program 1 times [2023-11-19 04:56:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539857076] [2023-11-19 04:56:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:34,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883472374] [2023-11-19 04:56:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:34,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:34,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:34,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:34,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:56:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:34,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:56:34,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:34,933 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 04:56:34,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:34,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:34,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539857076] [2023-11-19 04:56:34,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:34,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883472374] [2023-11-19 04:56:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883472374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:34,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:34,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444966304] [2023-11-19 04:56:34,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:34,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:34,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:34,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:34,938 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 04:56:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:35,073 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2023-11-19 04:56:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 22 [2023-11-19 04:56:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:35,075 INFO L225 Difference]: With dead ends: 135 [2023-11-19 04:56:35,075 INFO L226 Difference]: Without dead ends: 128 [2023-11-19 04:56:35,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 04:56:35,077 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 153 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:35,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 123 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-19 04:56:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2023-11-19 04:56:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 65 states have (on average 1.676923076923077) internal successors, (109), 94 states have internal predecessors, (109), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 04:56:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 139 transitions. [2023-11-19 04:56:35,094 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 139 transitions. Word has length 22 [2023-11-19 04:56:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:35,095 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 139 transitions. [2023-11-19 04:56:35,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 04:56:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 139 transitions. [2023-11-19 04:56:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:56:35,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:35,096 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] [2023-11-19 04:56:35,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:35,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:35,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash -948651903, now seen corresponding path program 1 times [2023-11-19 04:56:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217067718] [2023-11-19 04:56:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:35,341 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591041863] [2023-11-19 04:56:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:35,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:35,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:56:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:35,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:56:35,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:56:35,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:35,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:35,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217067718] [2023-11-19 04:56:35,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:35,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591041863] [2023-11-19 04:56:35,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591041863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:35,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:35,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898872107] [2023-11-19 04:56:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:35,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:35,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:35,482 INFO L87 Difference]: Start difference. First operand 112 states and 139 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:56:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:35,943 INFO L93 Difference]: Finished difference Result 198 states and 247 transitions. [2023-11-19 04:56:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2023-11-19 04:56:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:35,948 INFO L225 Difference]: With dead ends: 198 [2023-11-19 04:56:35,949 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 04:56:35,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 04:56:35,950 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 157 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:35,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 71 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:56:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 04:56:35,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 158. [2023-11-19 04:56:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.6407766990291262) internal successors, (169), 132 states have internal predecessors, (169), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 215 transitions. [2023-11-19 04:56:35,983 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 215 transitions. Word has length 28 [2023-11-19 04:56:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:35,983 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 215 transitions. [2023-11-19 04:56:35,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:56:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 215 transitions. [2023-11-19 04:56:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:56:35,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:35,985 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] [2023-11-19 04:56:36,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:36,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:36,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:36,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash 656562157, now seen corresponding path program 1 times [2023-11-19 04:56:36,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:36,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660599950] [2023-11-19 04:56:36,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:36,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:36,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635412898] [2023-11-19 04:56:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:36,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:36,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:36,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:56:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:36,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:56:36,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:56:36,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:36,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:36,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660599950] [2023-11-19 04:56:36,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:36,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635412898] [2023-11-19 04:56:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635412898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114815152] [2023-11-19 04:56:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:36,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:36,384 INFO L87 Difference]: Start difference. First operand 158 states and 215 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:56:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:36,629 INFO L93 Difference]: Finished difference Result 193 states and 238 transitions. [2023-11-19 04:56:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2023-11-19 04:56:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:36,633 INFO L225 Difference]: With dead ends: 193 [2023-11-19 04:56:36,633 INFO L226 Difference]: Without dead ends: 190 [2023-11-19 04:56:36,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 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 04:56:36,637 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 149 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:36,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 71 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:56:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-19 04:56:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 159. [2023-11-19 04:56:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 104 states have (on average 1.5961538461538463) internal successors, (166), 133 states have internal predecessors, (166), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 212 transitions. [2023-11-19 04:56:36,686 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 212 transitions. Word has length 29 [2023-11-19 04:56:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:36,689 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 212 transitions. [2023-11-19 04:56:36,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 04:56:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 212 transitions. [2023-11-19 04:56:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 04:56:36,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:36,694 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:36,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:36,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:36,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash -932203322, now seen corresponding path program 1 times [2023-11-19 04:56:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:36,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168666611] [2023-11-19 04:56:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:36,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646148338] [2023-11-19 04:56:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:36,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:36,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:36,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:36,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:56:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:37,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:56:37,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:37,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:37,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168666611] [2023-11-19 04:56:37,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646148338] [2023-11-19 04:56:37,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646148338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:37,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:37,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893980742] [2023-11-19 04:56:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:37,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:37,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:37,088 INFO L87 Difference]: Start difference. First operand 159 states and 212 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:37,607 INFO L93 Difference]: Finished difference Result 194 states and 241 transitions. [2023-11-19 04:56:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:37,608 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), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 43 [2023-11-19 04:56:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:37,611 INFO L225 Difference]: With dead ends: 194 [2023-11-19 04:56:37,611 INFO L226 Difference]: Without dead ends: 192 [2023-11-19 04:56:37,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 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 04:56:37,613 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 152 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:37,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 71 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:56:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-19 04:56:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 161. [2023-11-19 04:56:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 106 states have (on average 1.5660377358490567) internal successors, (166), 135 states have internal predecessors, (166), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 212 transitions. [2023-11-19 04:56:37,637 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 212 transitions. Word has length 43 [2023-11-19 04:56:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:37,637 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 212 transitions. [2023-11-19 04:56:37,638 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), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 212 transitions. [2023-11-19 04:56:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 04:56:37,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:37,639 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:37,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:37,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:37,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:37,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1166468183, now seen corresponding path program 1 times [2023-11-19 04:56:37,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329659496] [2023-11-19 04:56:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:37,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:37,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:37,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971945774] [2023-11-19 04:56:37,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:37,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:37,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:56:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:37,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:56:37,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:38,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:38,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:38,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329659496] [2023-11-19 04:56:38,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:38,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971945774] [2023-11-19 04:56:38,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971945774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:38,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:38,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394039834] [2023-11-19 04:56:38,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:38,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:38,036 INFO L87 Difference]: Start difference. First operand 161 states and 212 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:38,231 INFO L93 Difference]: Finished difference Result 194 states and 237 transitions. [2023-11-19 04:56:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 44 [2023-11-19 04:56:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:38,234 INFO L225 Difference]: With dead ends: 194 [2023-11-19 04:56:38,234 INFO L226 Difference]: Without dead ends: 192 [2023-11-19 04:56:38,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 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 04:56:38,237 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 147 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:38,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 73 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:56:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-19 04:56:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 163. [2023-11-19 04:56:38,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.537037037037037) internal successors, (166), 137 states have internal predecessors, (166), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 212 transitions. [2023-11-19 04:56:38,261 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 212 transitions. Word has length 44 [2023-11-19 04:56:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:38,262 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-19 04:56:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 212 transitions. [2023-11-19 04:56:38,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:56:38,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:38,271 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:38,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:38,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:38,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:38,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash -10537297, now seen corresponding path program 1 times [2023-11-19 04:56:38,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:38,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279445247] [2023-11-19 04:56:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:38,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:38,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404775672] [2023-11-19 04:56:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:38,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:38,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:38,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:38,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:56:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:38,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:56:38,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:38,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:38,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:38,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279445247] [2023-11-19 04:56:38,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:38,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404775672] [2023-11-19 04:56:38,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404775672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:38,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:38,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:56:38,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430531538] [2023-11-19 04:56:38,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:38,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:56:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:56:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:56:38,632 INFO L87 Difference]: Start difference. First operand 163 states and 212 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:56:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:38,707 INFO L93 Difference]: Finished difference Result 170 states and 212 transitions. [2023-11-19 04:56:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:56:38,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-11-19 04:56:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:38,709 INFO L225 Difference]: With dead ends: 170 [2023-11-19 04:56:38,710 INFO L226 Difference]: Without dead ends: 169 [2023-11-19 04:56:38,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 04:56:38,711 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 16 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:38,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 129 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-19 04:56:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2023-11-19 04:56:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.5277777777777777) internal successors, (165), 137 states have internal predecessors, (165), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 211 transitions. [2023-11-19 04:56:38,747 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 211 transitions. Word has length 46 [2023-11-19 04:56:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:38,748 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 211 transitions. [2023-11-19 04:56:38,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:56:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 211 transitions. [2023-11-19 04:56:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:56:38,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:38,751 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:38,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:38,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:38,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:38,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash -10537255, now seen corresponding path program 1 times [2023-11-19 04:56:38,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:38,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294098703] [2023-11-19 04:56:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:38,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:38,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:38,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516652407] [2023-11-19 04:56:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:38,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:38,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:38,995 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:39,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:56:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:39,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:56:39,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:56:39,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:39,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:39,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294098703] [2023-11-19 04:56:39,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:39,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516652407] [2023-11-19 04:56:39,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516652407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:39,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:39,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044893893] [2023-11-19 04:56:39,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:39,138 INFO L87 Difference]: Start difference. First operand 163 states and 211 transitions. Second operand has 4 states, 2 states have (on average 12.5) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:56:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:39,252 INFO L93 Difference]: Finished difference Result 163 states and 211 transitions. [2023-11-19 04:56:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 12.5) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-11-19 04:56:39,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:39,256 INFO L225 Difference]: With dead ends: 163 [2023-11-19 04:56:39,256 INFO L226 Difference]: Without dead ends: 162 [2023-11-19 04:56:39,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:39,258 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 46 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:39,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 88 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:39,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-19 04:56:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-19 04:56:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 136 states have internal predecessors, (161), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 207 transitions. [2023-11-19 04:56:39,278 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 207 transitions. Word has length 46 [2023-11-19 04:56:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:39,279 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 207 transitions. [2023-11-19 04:56:39,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 12.5) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:56:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 207 transitions. [2023-11-19 04:56:39,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:56:39,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:39,280 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:39,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:39,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:39,496 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:39,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -326656085, now seen corresponding path program 1 times [2023-11-19 04:56:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:39,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923306759] [2023-11-19 04:56:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:39,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:39,524 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109730096] [2023-11-19 04:56:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:39,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:39,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:39,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:39,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:56:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:39,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:56:39,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:39,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:39,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923306759] [2023-11-19 04:56:39,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:39,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109730096] [2023-11-19 04:56:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109730096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:39,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:56:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731792158] [2023-11-19 04:56:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:39,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:56:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:56:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:56:39,689 INFO L87 Difference]: Start difference. First operand 162 states and 207 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:56:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:39,795 INFO L93 Difference]: Finished difference Result 162 states and 207 transitions. [2023-11-19 04:56:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:56:39,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-11-19 04:56:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:39,797 INFO L225 Difference]: With dead ends: 162 [2023-11-19 04:56:39,798 INFO L226 Difference]: Without dead ends: 161 [2023-11-19 04:56:39,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:56:39,799 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 108 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:39,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 123 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-19 04:56:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-19 04:56:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 108 states have (on average 1.4722222222222223) internal successors, (159), 135 states have internal predecessors, (159), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 04:56:39,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2023-11-19 04:56:39,818 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 47 [2023-11-19 04:56:39,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:39,819 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2023-11-19 04:56:39,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:56:39,819 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2023-11-19 04:56:39,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 04:56:39,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:39,820 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:39,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:40,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:40,036 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:40,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:40,037 INFO L85 PathProgramCache]: Analyzing trace with hash -326654803, now seen corresponding path program 1 times [2023-11-19 04:56:40,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:40,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068492731] [2023-11-19 04:56:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:40,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745632017] [2023-11-19 04:56:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:40,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:40,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:40,054 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:40,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:56:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:40,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:56:40,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:40,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:40,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068492731] [2023-11-19 04:56:40,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745632017] [2023-11-19 04:56:40,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745632017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:40,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:40,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:56:40,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787052267] [2023-11-19 04:56:40,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:40,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:56:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:56:40,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:56:40,282 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:40,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:40,668 INFO L93 Difference]: Finished difference Result 224 states and 264 transitions. [2023-11-19 04:56:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:56:40,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 47 [2023-11-19 04:56:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:40,671 INFO L225 Difference]: With dead ends: 224 [2023-11-19 04:56:40,671 INFO L226 Difference]: Without dead ends: 223 [2023-11-19 04:56:40,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:56:40,673 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 270 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:40,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 218 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:56:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-19 04:56:40,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 190. [2023-11-19 04:56:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 132 states have (on average 1.4545454545454546) internal successors, (192), 159 states have internal predecessors, (192), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 04:56:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2023-11-19 04:56:40,696 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 47 [2023-11-19 04:56:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:40,696 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2023-11-19 04:56:40,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2023-11-19 04:56:40,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 04:56:40,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:40,698 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:40,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:40,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:56:40,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:40,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1536403919, now seen corresponding path program 1 times [2023-11-19 04:56:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849498937] [2023-11-19 04:56:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:40,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:40,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474373668] [2023-11-19 04:56:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:40,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:40,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:40,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:40,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:56:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:41,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:56:41,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:41,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:41,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:41,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849498937] [2023-11-19 04:56:41,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474373668] [2023-11-19 04:56:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474373668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695909362] [2023-11-19 04:56:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:41,114 INFO L87 Difference]: Start difference. First operand 190 states and 248 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:41,396 INFO L93 Difference]: Finished difference Result 190 states and 248 transitions. [2023-11-19 04:56:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 48 [2023-11-19 04:56:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:41,399 INFO L225 Difference]: With dead ends: 190 [2023-11-19 04:56:41,399 INFO L226 Difference]: Without dead ends: 188 [2023-11-19 04:56:41,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 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 04:56:41,401 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 86 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:41,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:56:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-19 04:56:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-19 04:56:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 132 states have (on average 1.4166666666666667) internal successors, (187), 157 states have internal predecessors, (187), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 04:56:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 243 transitions. [2023-11-19 04:56:41,436 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 243 transitions. Word has length 48 [2023-11-19 04:56:41,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:41,437 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 243 transitions. [2023-11-19 04:56:41,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 243 transitions. [2023-11-19 04:56:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 04:56:41,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:41,438 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:41,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:41,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:56:41,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:41,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -383881107, now seen corresponding path program 1 times [2023-11-19 04:56:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:41,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480225026] [2023-11-19 04:56:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:41,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:41,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912705964] [2023-11-19 04:56:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:41,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:41,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:41,684 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:41,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 04:56:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:41,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:56:41,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:56:41,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:56:41,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480225026] [2023-11-19 04:56:41,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912705964] [2023-11-19 04:56:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912705964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:41,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:56:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:56:41,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172540703] [2023-11-19 04:56:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:56:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:56:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:56:41,849 INFO L87 Difference]: Start difference. First operand 188 states and 243 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:41,975 INFO L93 Difference]: Finished difference Result 208 states and 254 transitions. [2023-11-19 04:56:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:56:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2023-11-19 04:56:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:41,977 INFO L225 Difference]: With dead ends: 208 [2023-11-19 04:56:41,977 INFO L226 Difference]: Without dead ends: 207 [2023-11-19 04:56:41,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 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 04:56:41,978 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 47 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:41,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 150 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:56:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-19 04:56:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 192. [2023-11-19 04:56:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 136 states have (on average 1.4044117647058822) internal successors, (191), 161 states have internal predecessors, (191), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 04:56:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 247 transitions. [2023-11-19 04:56:42,005 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 247 transitions. Word has length 49 [2023-11-19 04:56:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:42,005 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 247 transitions. [2023-11-19 04:56:42,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 04:56:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 247 transitions. [2023-11-19 04:56:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 04:56:42,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:42,007 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:42,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:42,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 04:56:42,229 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:42,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash -839171674, now seen corresponding path program 1 times [2023-11-19 04:56:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761278176] [2023-11-19 04:56:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:42,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:42,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:42,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332244782] [2023-11-19 04:56:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:42,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:42,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:42,254 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:42,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 04:56:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:42,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:56:42,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:56:42,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:56:42,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761278176] [2023-11-19 04:56:42,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332244782] [2023-11-19 04:56:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332244782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:56:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [316697626] [2023-11-19 04:56:42,978 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-19 04:56:42,979 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:56:42,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:56:42,989 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:56:42,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:56:51,606 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-19 04:56:51,609 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 04:56:51,611 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:56:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [316697626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:56:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:56:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 22 [2023-11-19 04:56:55,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449215731] [2023-11-19 04:56:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:56:55,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 04:56:55,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:56:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 04:56:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:56:55,334 INFO L87 Difference]: Start difference. First operand 192 states and 247 transitions. Second operand has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 04:56:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:56:56,279 INFO L93 Difference]: Finished difference Result 214 states and 260 transitions. [2023-11-19 04:56:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 04:56:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2023-11-19 04:56:56,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:56:56,281 INFO L225 Difference]: With dead ends: 214 [2023-11-19 04:56:56,281 INFO L226 Difference]: Without dead ends: 196 [2023-11-19 04:56:56,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:56:56,286 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 157 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:56:56,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 54 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:56:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-19 04:56:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2023-11-19 04:56:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 130 states have (on average 1.3384615384615384) internal successors, (174), 154 states have internal predecessors, (174), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 04:56:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 230 transitions. [2023-11-19 04:56:56,320 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 230 transitions. Word has length 56 [2023-11-19 04:56:56,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:56:56,321 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 230 transitions. [2023-11-19 04:56:56,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-19 04:56:56,321 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 230 transitions. [2023-11-19 04:56:56,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 04:56:56,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:56:56,322 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:56:56,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 04:56:56,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 04:56:56,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:56:56,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:56:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1547153789, now seen corresponding path program 1 times [2023-11-19 04:56:56,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:56:56,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942542843] [2023-11-19 04:56:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:56,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:56:56,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:56:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678155693] [2023-11-19 04:56:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:56:56,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:56:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:56:56,557 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:56:56,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 04:56:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:56:56,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:56:56,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:56:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:56:56,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:56:56,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:56:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942542843] [2023-11-19 04:56:56,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:56:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678155693] [2023-11-19 04:56:56,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678155693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:56:56,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652750577] [2023-11-19 04:56:56,877 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-19 04:56:56,877 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:56:56,878 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:56:56,878 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:56:56,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:57:01,089 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-19 04:57:01,096 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 04:57:01,098 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:57:04,884 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8024#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 4611686018427387904) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= |ULTIMATE.start_main_~r~0#1| 10) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-11-19 04:57:04,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:57:04,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:57:04,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-19 04:57:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95944066] [2023-11-19 04:57:04,884 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:57:04,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:57:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:57:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:57:04,888 INFO L87 Difference]: Start difference. First operand 185 states and 230 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 04:57:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:05,142 INFO L93 Difference]: Finished difference Result 209 states and 251 transitions. [2023-11-19 04:57:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:57:05,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2023-11-19 04:57:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:05,144 INFO L225 Difference]: With dead ends: 209 [2023-11-19 04:57:05,144 INFO L226 Difference]: Without dead ends: 206 [2023-11-19 04:57:05,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:57:05,145 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 103 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:05,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 155 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:57:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-19 04:57:05,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 182. [2023-11-19 04:57:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 130 states have (on average 1.3) internal successors, (169), 151 states have internal predecessors, (169), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 04:57:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 225 transitions. [2023-11-19 04:57:05,177 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 225 transitions. Word has length 58 [2023-11-19 04:57:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:05,177 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 225 transitions. [2023-11-19 04:57:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 04:57:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 225 transitions. [2023-11-19 04:57:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 04:57:05,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:05,179 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 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 04:57:05,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 04:57:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 04:57:05,392 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:57:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash 717127281, now seen corresponding path program 1 times [2023-11-19 04:57:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204413665] [2023-11-19 04:57:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:05,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:57:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369719962] [2023-11-19 04:57:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:05,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:57:05,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:05,415 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:57:05,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 04:57:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:05,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:57:05,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:57:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:57:05,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:57:05,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204413665] [2023-11-19 04:57:05,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:57:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369719962] [2023-11-19 04:57:05,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369719962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:57:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [764946931] [2023-11-19 04:57:05,738 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-19 04:57:05,738 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:57:05,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:57:05,739 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:57:05,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:57:09,658 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-19 04:57:09,659 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 04:57:09,660 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:57:12,570 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8725#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 (+ 4611686018427387904 (div |ULTIMATE.start_main_~b~0#1| 2))) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 10) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~a~0#1|) 2))))' at error location [2023-11-19 04:57:12,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:57:12,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:57:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-19 04:57:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71361971] [2023-11-19 04:57:12,572 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 04:57:12,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:57:12,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:57:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:57:12,574 INFO L87 Difference]: Start difference. First operand 182 states and 225 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 04:57:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:12,872 INFO L93 Difference]: Finished difference Result 284 states and 341 transitions. [2023-11-19 04:57:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:57:12,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 59 [2023-11-19 04:57:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:12,875 INFO L225 Difference]: With dead ends: 284 [2023-11-19 04:57:12,875 INFO L226 Difference]: Without dead ends: 280 [2023-11-19 04:57:12,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 87 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:57:12,877 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 167 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 102 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 04:57:12,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 102 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:57:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-19 04:57:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 223. [2023-11-19 04:57:12,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 163 states have (on average 1.3067484662576687) internal successors, (213), 184 states have internal predecessors, (213), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 04:57:12,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 285 transitions. [2023-11-19 04:57:12,916 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 285 transitions. Word has length 59 [2023-11-19 04:57:12,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:12,917 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 285 transitions. [2023-11-19 04:57:12,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 04:57:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 285 transitions. [2023-11-19 04:57:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 04:57:12,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:12,919 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:57:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 04:57:13,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:57:13,128 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:57:13,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash 838083658, now seen corresponding path program 1 times [2023-11-19 04:57:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:13,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756485109] [2023-11-19 04:57:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:13,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:57:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84083026] [2023-11-19 04:57:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:13,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:57:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:13,148 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:57:13,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 04:57:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:13,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:57:13,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:57:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:57:13,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:57:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:57:13,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756485109] [2023-11-19 04:57:13,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:57:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84083026] [2023-11-19 04:57:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84083026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:57:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1714514604] [2023-11-19 04:57:13,424 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-19 04:57:13,424 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:57:13,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:57:13,425 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:57:13,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:57:16,300 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-19 04:57:16,301 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 04:57:16,302 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:57:19,017 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9799#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 10))' at error location [2023-11-19 04:57:19,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:57:19,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:57:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 04:57:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64416532] [2023-11-19 04:57:19,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:57:19,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:57:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:57:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:57:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2023-11-19 04:57:19,019 INFO L87 Difference]: Start difference. First operand 223 states and 285 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 04:57:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:19,442 INFO L93 Difference]: Finished difference Result 390 states and 481 transitions. [2023-11-19 04:57:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:57:19,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 73 [2023-11-19 04:57:19,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:19,445 INFO L225 Difference]: With dead ends: 390 [2023-11-19 04:57:19,446 INFO L226 Difference]: Without dead ends: 388 [2023-11-19 04:57:19,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:57:19,447 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 317 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:19,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 238 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:57:19,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-19 04:57:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 292. [2023-11-19 04:57:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 239 states have internal predecessors, (289), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-19 04:57:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 389 transitions. [2023-11-19 04:57:19,498 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 389 transitions. Word has length 73 [2023-11-19 04:57:19,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:19,498 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 389 transitions. [2023-11-19 04:57:19,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 04:57:19,499 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 389 transitions. [2023-11-19 04:57:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 04:57:19,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:19,500 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:57:19,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 04:57:19,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 04:57:19,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 04:57:19,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash 210789715, now seen corresponding path program 1 times [2023-11-19 04:57:19,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:19,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499615566] [2023-11-19 04:57:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:19,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:19,737 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:57:19,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10530681] [2023-11-19 04:57:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:19,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:57:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:19,738 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:57:19,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dac79f9a-7475-43f9-8216-2df90988b9fd/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 04:57:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:19,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:57:19,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:57:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:57:19,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:57:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-19 04:57:19,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:57:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499615566] [2023-11-19 04:57:19,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:57:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10530681] [2023-11-19 04:57:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10530681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:57:19,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [184396852] [2023-11-19 04:57:19,985 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-19 04:57:19,985 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:57:19,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:57:19,986 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:57:19,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs