./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1c1067a232ccde2ed577e0679695f102973a28bf8615edad0a3c87e54d273eb4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:14:28,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:14:28,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:14:28,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:14:28,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:14:28,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:14:28,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:14:28,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:14:28,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:14:28,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:14:28,739 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:14:28,740 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:14:28,741 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:14:28,743 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:14:28,743 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:14:28,744 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:14:28,744 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:14:28,744 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:14:28,745 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:14:28,746 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:14:28,747 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:14:28,748 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:14:28,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:14:28,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:14:28,750 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:14:28,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:14:28,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:14:28,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:14:28,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:14:28,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:14:28,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:14:28,754 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:14:28,754 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:14:28,754 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:14:28,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:14:28,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:14:28,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:14:28,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:14:28,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:14:28,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:28,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:14:28,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:14:28,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:14:28,757 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:14:28,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:14:28,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:14:28,758 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:14:28,759 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:14:28,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:14:28,759 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_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c1067a232ccde2ed577e0679695f102973a28bf8615edad0a3c87e54d273eb4 [2023-11-24 23:14:29,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:14:29,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:14:29,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:14:29,154 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:14:29,155 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:14:29,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2023-11-24 23:14:32,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:14:32,527 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:14:32,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2023-11-24 23:14:32,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/data/edaf7fa20/1a43ee38c8a841a3947325fc2b095a32/FLAGdaae51e3a [2023-11-24 23:14:32,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/data/edaf7fa20/1a43ee38c8a841a3947325fc2b095a32 [2023-11-24 23:14:32,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:14:32,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:14:32,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:32,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:14:32,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:14:32,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae9c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32, skipping insertion in model container [2023-11-24 23:14:32,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:14:32,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:32,851 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:14:32,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:14:32,901 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:14:32,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32 WrapperNode [2023-11-24 23:14:32,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:14:32,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:32,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:14:32,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:14:32,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,964 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 126 [2023-11-24 23:14:32,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:14:32,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:14:32,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:14:32,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:14:32,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:32,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:14:32,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:14:32,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:14:32,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:14:32,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (1/1) ... [2023-11-24 23:14:33,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:14:33,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:33,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:14:33,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:14:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:14:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:14:33,086 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:14:33,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:14:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:14:33,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:14:33,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:14:33,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:14:33,150 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:14:33,152 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:14:33,877 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:14:33,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:14:33,934 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:14:33,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:33 BoogieIcfgContainer [2023-11-24 23:14:33,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:14:33,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:14:33,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:14:33,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:14:33,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:14:32" (1/3) ... [2023-11-24 23:14:33,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c0af17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:33, skipping insertion in model container [2023-11-24 23:14:33,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:14:32" (2/3) ... [2023-11-24 23:14:33,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c0af17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:14:33, skipping insertion in model container [2023-11-24 23:14:33,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:14:33" (3/3) ... [2023-11-24 23:14:33,953 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.c [2023-11-24 23:14:33,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:14:33,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2023-11-24 23:14:34,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:14:34,045 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;@389d89d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:14:34,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2023-11-24 23:14:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 91 states have (on average 1.945054945054945) internal successors, (177), 175 states have internal predecessors, (177), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:14:34,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:34,059 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:34,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:34,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1921909597, now seen corresponding path program 1 times [2023-11-24 23:14:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:34,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611266046] [2023-11-24 23:14:34,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:34,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:34,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:34,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611266046] [2023-11-24 23:14:34,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611266046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:34,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:34,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:34,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955089308] [2023-11-24 23:14:34,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:34,447 INFO L87 Difference]: Start difference. First operand has 183 states, 91 states have (on average 1.945054945054945) internal successors, (177), 175 states have internal predecessors, (177), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:35,106 INFO L93 Difference]: Finished difference Result 380 states and 432 transitions. [2023-11-24 23:14:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:35,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-24 23:14:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:35,121 INFO L225 Difference]: With dead ends: 380 [2023-11-24 23:14:35,121 INFO L226 Difference]: Without dead ends: 256 [2023-11-24 23:14:35,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:35,129 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 91 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:35,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 116 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:14:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-24 23:14:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 242. [2023-11-24 23:14:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 164 states have (on average 1.5182926829268293) internal successors, (249), 234 states have internal predecessors, (249), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 259 transitions. [2023-11-24 23:14:35,225 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 259 transitions. Word has length 10 [2023-11-24 23:14:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:35,227 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 259 transitions. [2023-11-24 23:14:35,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 259 transitions. [2023-11-24 23:14:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:14:35,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:35,230 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:35,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:14:35,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:35,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1695796743, now seen corresponding path program 1 times [2023-11-24 23:14:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678346196] [2023-11-24 23:14:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:35,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:35,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928395651] [2023-11-24 23:14:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:35,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:35,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:35,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:35,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:14:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:35,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:35,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:35,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:35,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678346196] [2023-11-24 23:14:35,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928395651] [2023-11-24 23:14:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928395651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:35,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:35,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528586076] [2023-11-24 23:14:35,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:35,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:35,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:35,463 INFO L87 Difference]: Start difference. First operand 242 states and 259 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:35,538 INFO L93 Difference]: Finished difference Result 242 states and 259 transitions. [2023-11-24 23:14:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:35,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2023-11-24 23:14:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:35,543 INFO L225 Difference]: With dead ends: 242 [2023-11-24 23:14:35,543 INFO L226 Difference]: Without dead ends: 239 [2023-11-24 23:14:35,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:35,546 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 124 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:35,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 144 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:14:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-24 23:14:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-11-24 23:14:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 164 states have (on average 1.4878048780487805) internal successors, (244), 231 states have internal predecessors, (244), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2023-11-24 23:14:35,573 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 38 [2023-11-24 23:14:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:35,574 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2023-11-24 23:14:35,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2023-11-24 23:14:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 23:14:35,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:35,577 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:35,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:35,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:35,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:35,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1030091377, now seen corresponding path program 1 times [2023-11-24 23:14:35,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:35,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902828045] [2023-11-24 23:14:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:35,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685162814] [2023-11-24 23:14:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:35,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:35,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:14:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:35,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:35,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:35,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:35,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:35,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902828045] [2023-11-24 23:14:35,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685162814] [2023-11-24 23:14:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685162814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:35,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:35,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451044224] [2023-11-24 23:14:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:35,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:35,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:35,935 INFO L87 Difference]: Start difference. First operand 239 states and 254 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:36,044 INFO L93 Difference]: Finished difference Result 264 states and 267 transitions. [2023-11-24 23:14:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2023-11-24 23:14:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:36,047 INFO L225 Difference]: With dead ends: 264 [2023-11-24 23:14:36,047 INFO L226 Difference]: Without dead ends: 262 [2023-11-24 23:14:36,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:36,049 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 66 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:36,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 278 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:14:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-24 23:14:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 239. [2023-11-24 23:14:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 164 states have (on average 1.475609756097561) internal successors, (242), 231 states have internal predecessors, (242), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 252 transitions. [2023-11-24 23:14:36,066 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 252 transitions. Word has length 39 [2023-11-24 23:14:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:36,067 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 252 transitions. [2023-11-24 23:14:36,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 252 transitions. [2023-11-24 23:14:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:14:36,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:36,069 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:36,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:36,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:36,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:36,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1868061509, now seen corresponding path program 1 times [2023-11-24 23:14:36,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:36,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902859093] [2023-11-24 23:14:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:36,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:36,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:36,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694663875] [2023-11-24 23:14:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:36,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:36,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:36,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:14:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:36,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:36,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:36,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:36,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902859093] [2023-11-24 23:14:36,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694663875] [2023-11-24 23:14:36,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694663875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:36,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:36,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:14:36,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250534710] [2023-11-24 23:14:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:36,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:36,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:36,556 INFO L87 Difference]: Start difference. First operand 239 states and 252 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:36,781 INFO L93 Difference]: Finished difference Result 262 states and 265 transitions. [2023-11-24 23:14:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-11-24 23:14:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:36,784 INFO L225 Difference]: With dead ends: 262 [2023-11-24 23:14:36,784 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:14:36,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:36,786 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 146 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:36,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 215 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:14:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:14:36,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 242. [2023-11-24 23:14:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 167 states have (on average 1.4491017964071857) internal successors, (242), 234 states have internal predecessors, (242), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 252 transitions. [2023-11-24 23:14:36,800 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 252 transitions. Word has length 40 [2023-11-24 23:14:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:36,801 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 252 transitions. [2023-11-24 23:14:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 252 transitions. [2023-11-24 23:14:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:14:36,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:36,803 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:36,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:37,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:37,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:37,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2075331823, now seen corresponding path program 1 times [2023-11-24 23:14:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:37,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936701854] [2023-11-24 23:14:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:37,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:37,034 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692336356] [2023-11-24 23:14:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:37,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:37,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:37,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:37,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:14:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:37,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:37,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:37,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:37,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936701854] [2023-11-24 23:14:37,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692336356] [2023-11-24 23:14:37,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692336356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:37,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:37,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:14:37,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489988841] [2023-11-24 23:14:37,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:37,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:37,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:37,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:37,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:37,278 INFO L87 Difference]: Start difference. First operand 242 states and 252 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:37,645 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2023-11-24 23:14:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2023-11-24 23:14:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:37,653 INFO L225 Difference]: With dead ends: 242 [2023-11-24 23:14:37,653 INFO L226 Difference]: Without dead ends: 188 [2023-11-24 23:14:37,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:37,655 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 209 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:37,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 41 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:14:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-24 23:14:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-24 23:14:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 133 states have (on average 1.3834586466165413) internal successors, (184), 180 states have internal predecessors, (184), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 194 transitions. [2023-11-24 23:14:37,667 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 194 transitions. Word has length 41 [2023-11-24 23:14:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:37,668 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 194 transitions. [2023-11-24 23:14:37,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:14:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 194 transitions. [2023-11-24 23:14:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:14:37,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:37,669 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:37,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:37,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:37,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:37,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2049482300, now seen corresponding path program 1 times [2023-11-24 23:14:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951207301] [2023-11-24 23:14:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:37,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:37,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551311202] [2023-11-24 23:14:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:37,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:37,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:37,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:14:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:37,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:37,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:38,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:38,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951207301] [2023-11-24 23:14:38,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:38,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551311202] [2023-11-24 23:14:38,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551311202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:38,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702688932] [2023-11-24 23:14:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:38,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:38,048 INFO L87 Difference]: Start difference. First operand 188 states and 194 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:38,070 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2023-11-24 23:14:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:38,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2023-11-24 23:14:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:38,073 INFO L225 Difference]: With dead ends: 188 [2023-11-24 23:14:38,073 INFO L226 Difference]: Without dead ends: 187 [2023-11-24 23:14:38,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:38,075 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 96 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:38,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 143 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:14:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-24 23:14:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-24 23:14:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 133 states have (on average 1.368421052631579) internal successors, (182), 179 states have internal predecessors, (182), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2023-11-24 23:14:38,088 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 48 [2023-11-24 23:14:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:38,088 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 192 transitions. [2023-11-24 23:14:38,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 192 transitions. [2023-11-24 23:14:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-24 23:14:38,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:38,090 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:38,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:38,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:38,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:38,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -890558018, now seen corresponding path program 1 times [2023-11-24 23:14:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175112353] [2023-11-24 23:14:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:38,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:38,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836540640] [2023-11-24 23:14:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:38,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:38,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:38,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:38,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:14:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:38,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:14:38,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:38,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:38,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:38,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175112353] [2023-11-24 23:14:38,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:38,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836540640] [2023-11-24 23:14:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836540640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:38,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:38,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:14:38,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380468393] [2023-11-24 23:14:38,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:14:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:38,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:14:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:38,477 INFO L87 Difference]: Start difference. First operand 187 states and 192 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:38,499 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2023-11-24 23:14:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:14:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2023-11-24 23:14:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:38,503 INFO L225 Difference]: With dead ends: 188 [2023-11-24 23:14:38,504 INFO L226 Difference]: Without dead ends: 187 [2023-11-24 23:14:38,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:14:38,507 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:38,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:14:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-24 23:14:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-24 23:14:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 133 states have (on average 1.3609022556390977) internal successors, (181), 179 states have internal predecessors, (181), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:14:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2023-11-24 23:14:38,522 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 49 [2023-11-24 23:14:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:38,524 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2023-11-24 23:14:38,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2023-11-24 23:14:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-24 23:14:38,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:38,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:38,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-24 23:14:38,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:38,732 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:38,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1445043774, now seen corresponding path program 1 times [2023-11-24 23:14:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500822574] [2023-11-24 23:14:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:38,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6326386] [2023-11-24 23:14:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:38,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:38,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:38,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:38,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:14:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:38,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:14:38,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:38,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:38,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500822574] [2023-11-24 23:14:38,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6326386] [2023-11-24 23:14:38,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6326386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:38,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:38,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:14:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938087351] [2023-11-24 23:14:38,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:38,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:38,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:38,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:38,905 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:39,352 INFO L93 Difference]: Finished difference Result 318 states and 323 transitions. [2023-11-24 23:14:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:39,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2023-11-24 23:14:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:39,355 INFO L225 Difference]: With dead ends: 318 [2023-11-24 23:14:39,355 INFO L226 Difference]: Without dead ends: 280 [2023-11-24 23:14:39,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:39,356 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 94 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:39,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 105 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:14:39,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-24 23:14:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 269. [2023-11-24 23:14:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.267605633802817) internal successors, (270), 259 states have internal predecessors, (270), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:14:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 284 transitions. [2023-11-24 23:14:39,373 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 284 transitions. Word has length 53 [2023-11-24 23:14:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:39,374 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 284 transitions. [2023-11-24 23:14:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 284 transitions. [2023-11-24 23:14:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 23:14:39,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:39,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:14:39,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:39,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:14:39,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:39,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2027261496, now seen corresponding path program 1 times [2023-11-24 23:14:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225529144] [2023-11-24 23:14:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:39,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:39,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:39,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101178068] [2023-11-24 23:14:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:39,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:39,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:39,605 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:39,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:14:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:39,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:14:39,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:39,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:14:39,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225529144] [2023-11-24 23:14:39,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101178068] [2023-11-24 23:14:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101178068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:14:39,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:14:39,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:14:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608116275] [2023-11-24 23:14:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:14:39,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:14:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:14:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:14:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:39,776 INFO L87 Difference]: Start difference. First operand 269 states and 284 transitions. Second operand has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:14:39,902 INFO L93 Difference]: Finished difference Result 270 states and 284 transitions. [2023-11-24 23:14:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:14:39,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-11-24 23:14:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:14:39,905 INFO L225 Difference]: With dead ends: 270 [2023-11-24 23:14:39,905 INFO L226 Difference]: Without dead ends: 269 [2023-11-24 23:14:39,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:14:39,909 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 39 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:14:39,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 224 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:14:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-24 23:14:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-11-24 23:14:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 213 states have (on average 1.2629107981220657) internal successors, (269), 259 states have internal predecessors, (269), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:14:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 283 transitions. [2023-11-24 23:14:39,927 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 283 transitions. Word has length 59 [2023-11-24 23:14:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:14:39,927 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 283 transitions. [2023-11-24 23:14:39,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 23:14:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 283 transitions. [2023-11-24 23:14:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-24 23:14:39,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:14:39,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:14:39,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:14:40,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:40,140 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:14:40,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:14:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash -97685822, now seen corresponding path program 1 times [2023-11-24 23:14:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:14:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177009631] [2023-11-24 23:14:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:14:40,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:14:40,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136817725] [2023-11-24 23:14:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:14:40,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:14:40,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:14:40,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:14:40,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:14:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:14:40,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:14:40,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:14:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:40,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:14:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:14:40,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:14:40,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177009631] [2023-11-24 23:14:40,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:14:40,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136817725] [2023-11-24 23:14:40,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136817725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:14:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [193412095] [2023-11-24 23:14:40,842 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-11-24 23:14:40,842 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:14:40,848 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:14:40,854 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:14:40,854 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:14:45,632 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 70 for LOIs [2023-11-24 23:14:45,700 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2023-11-24 23:14:45,730 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:15:11,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6432#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 2) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 1537228672809129301) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 307445734561825861 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:15:11,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:15:11,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:15:11,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-24 23:15:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324918777] [2023-11-24 23:15:11,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:15:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:15:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:15:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=678, Unknown=2, NotChecked=0, Total=812 [2023-11-24 23:15:11,816 INFO L87 Difference]: Start difference. First operand 269 states and 283 transitions. Second operand has 8 states, 7 states have (on average 23.285714285714285) internal successors, (163), 8 states have internal predecessors, (163), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:15:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:12,826 INFO L93 Difference]: Finished difference Result 339 states and 346 transitions. [2023-11-24 23:15:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:15:12,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 23.285714285714285) internal successors, (163), 8 states have internal predecessors, (163), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 90 [2023-11-24 23:15:12,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:12,829 INFO L225 Difference]: With dead ends: 339 [2023-11-24 23:15:12,829 INFO L226 Difference]: Without dead ends: 336 [2023-11-24 23:15:12,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 191 SyntacticMatches, 50 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1296 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=148, Invalid=780, Unknown=2, NotChecked=0, Total=930 [2023-11-24 23:15:12,830 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 293 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:12,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 245 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:15:12,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-24 23:15:12,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 308. [2023-11-24 23:15:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 253 states have (on average 1.2924901185770752) internal successors, (327), 298 states have internal predecessors, (327), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-24 23:15:12,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 341 transitions. [2023-11-24 23:15:12,845 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 341 transitions. Word has length 90 [2023-11-24 23:15:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:12,845 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 341 transitions. [2023-11-24 23:15:12,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 23.285714285714285) internal successors, (163), 8 states have internal predecessors, (163), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:15:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 341 transitions. [2023-11-24 23:15:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 23:15:12,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:12,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 23:15:12,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:13,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:15:13,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 81 more)] === [2023-11-24 23:15:13,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706920, now seen corresponding path program 1 times [2023-11-24 23:15:13,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:13,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86804712] [2023-11-24 23:15:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:13,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:13,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:13,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83484872] [2023-11-24 23:15:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:13,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:13,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:13,080 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:13,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6606b30b-9ef8-42da-8db7-9f0bc332dfd7/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:15:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:13,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:15:13,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:15:13,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:15:16,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:16,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86804712] [2023-11-24 23:15:16,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:16,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83484872] [2023-11-24 23:15:16,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83484872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:15:16,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1962979601] [2023-11-24 23:15:16,497 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2023-11-24 23:15:16,497 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:15:16,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:15:16,498 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:15:16,498 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:15:19,992 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 70 for LOIs [2023-11-24 23:15:20,023 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2023-11-24 23:15:20,046 INFO L180 IcfgInterpreter]: Interpretation finished