./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.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_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/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_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/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_3888d36c-d653-45de-b397-c3e1026f6e99/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 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:56,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:56,535 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:51:56,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:56,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:56,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:56,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:56,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:56,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:56,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:56,602 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:56,604 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:56,604 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:56,606 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:56,607 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:56,607 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:56,608 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:56,608 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:56,609 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:56,609 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:56,610 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:56,610 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:56,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:56,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:56,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:51:56,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:56,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:51:56,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:56,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:56,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:56,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:56,629 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:51:56,630 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:51:56,630 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:51:56,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:56,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:56,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:56,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:56,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:56,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:56,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:56,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:56,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:56,637 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:56,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:56,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:56,639 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:56,639 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:56,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:56,639 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_3888d36c-d653-45de-b397-c3e1026f6e99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5fb336862157190b75f459fa5ac35efb8ca70e207f909b082fde37cf98e7f7 [2023-11-24 23:51:57,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:57,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:57,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:57,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:57,064 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:57,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2023-11-24 23:52:00,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:52:00,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:52:00,533 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound10.c [2023-11-24 23:52:00,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/data/3cd36e2f6/704528286e6347639d42956d16e50b0c/FLAG289c79f45 [2023-11-24 23:52:00,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/data/3cd36e2f6/704528286e6347639d42956d16e50b0c [2023-11-24 23:52:00,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:52:00,578 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:52:00,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:00,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:52:00,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:52:00,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd5c2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00, skipping insertion in model container [2023-11-24 23:52:00,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:52:00,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:00,873 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:52:00,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:00,922 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:52:00,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00 WrapperNode [2023-11-24 23:52:00,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:00,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:00,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:52:00,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:52:00,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,976 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-11-24 23:52:00,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:00,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:52:00,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:52:00,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:52:00,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:00,999 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:01,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:01,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:01,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:01,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:52:01,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:52:01,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:52:01,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:52:01,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (1/1) ... [2023-11-24 23:52:01,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:01,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:01,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:52:01,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:52:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:52:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:52:01,115 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:52:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:52:01,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:52:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:52:01,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:52:01,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:52:01,186 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:52:01,192 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:52:01,605 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:52:01,646 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:52:01,646 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:52:01,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:01 BoogieIcfgContainer [2023-11-24 23:52:01,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:52:01,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:52:01,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:52:01,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:52:01,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:52:00" (1/3) ... [2023-11-24 23:52:01,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656b9b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:01, skipping insertion in model container [2023-11-24 23:52:01,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:00" (2/3) ... [2023-11-24 23:52:01,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656b9b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:01, skipping insertion in model container [2023-11-24 23:52:01,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:01" (3/3) ... [2023-11-24 23:52:01,703 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound10.c [2023-11-24 23:52:01,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:52:01,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-24 23:52:01,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:52:01,811 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;@c83e8c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:52:01,811 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-24 23:52:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:52:01,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:52:01,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:01,825 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:01,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1276581072, now seen corresponding path program 1 times [2023-11-24 23:52:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:01,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218734276] [2023-11-24 23:52:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:01,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:01,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218734276] [2023-11-24 23:52:01,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-24 23:52:01,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570172591] [2023-11-24 23:52:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:01,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:01,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:01,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:02,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:52:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:02,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:52:02,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:02,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570172591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:02,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:02,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:02,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938820944] [2023-11-24 23:52:02,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:52:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:52:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:52:02,155 INFO L87 Difference]: Start difference. First operand has 72 states, 35 states have (on average 1.8285714285714285) internal successors, (64), 59 states have internal predecessors, (64), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:52:02,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:02,195 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2023-11-24 23:52:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:52:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 15 [2023-11-24 23:52:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:02,216 INFO L225 Difference]: With dead ends: 119 [2023-11-24 23:52:02,217 INFO L226 Difference]: Without dead ends: 68 [2023-11-24 23:52:02,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:52:02,231 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:02,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-24 23:52:02,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-24 23:52:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 57 states have internal predecessors, (60), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:52:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-11-24 23:52:02,287 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 15 [2023-11-24 23:52:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:02,289 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-11-24 23:52:02,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:52:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-11-24 23:52:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:52:02,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:02,291 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:02,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:52:02,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:02,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:02,505 INFO L85 PathProgramCache]: Analyzing trace with hash 497489263, now seen corresponding path program 1 times [2023-11-24 23:52:02,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:02,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797181113] [2023-11-24 23:52:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:02,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:02,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126971852] [2023-11-24 23:52:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:02,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:02,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:02,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:02,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:52:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:02,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:52:02,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:52:02,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:02,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797181113] [2023-11-24 23:52:02,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126971852] [2023-11-24 23:52:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126971852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:52:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338783086] [2023-11-24 23:52:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:02,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:52:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:02,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:52:02,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:02,732 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 23:52:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:02,920 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2023-11-24 23:52:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:52:02,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 20 [2023-11-24 23:52:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:02,923 INFO L225 Difference]: With dead ends: 142 [2023-11-24 23:52:02,924 INFO L226 Difference]: Without dead ends: 95 [2023-11-24 23:52:02,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:02,926 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 76 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:02,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 131 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:02,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-24 23:52:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2023-11-24 23:52:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.66) internal successors, (83), 73 states have internal predecessors, (83), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:52:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-11-24 23:52:02,948 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 20 [2023-11-24 23:52:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:02,948 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-11-24 23:52:02,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 23:52:02,949 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-11-24 23:52:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:52:02,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:02,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:02,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:03,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:52:03,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:03,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash 961396655, now seen corresponding path program 1 times [2023-11-24 23:52:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55312479] [2023-11-24 23:52:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:03,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:03,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:03,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198012266] [2023-11-24 23:52:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:03,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:03,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:03,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:03,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:52:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:03,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:52:03,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:03,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:03,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:03,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55312479] [2023-11-24 23:52:03,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:03,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198012266] [2023-11-24 23:52:03,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198012266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:03,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:03,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754129578] [2023-11-24 23:52:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:03,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:03,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:03,310 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:03,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:03,360 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2023-11-24 23:52:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:03,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2023-11-24 23:52:03,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:03,363 INFO L225 Difference]: With dead ends: 89 [2023-11-24 23:52:03,364 INFO L226 Difference]: Without dead ends: 87 [2023-11-24 23:52:03,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 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 23:52:03,366 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:03,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-24 23:52:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-24 23:52:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.6) internal successors, (80), 71 states have internal predecessors, (80), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:52:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2023-11-24 23:52:03,384 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 26 [2023-11-24 23:52:03,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:03,385 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2023-11-24 23:52:03,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2023-11-24 23:52:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:52:03,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:03,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:03,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 23:52:03,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:03,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:03,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash -261476083, now seen corresponding path program 1 times [2023-11-24 23:52:03,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156596793] [2023-11-24 23:52:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:03,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:03,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46428715] [2023-11-24 23:52:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:03,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:03,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:52:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:03,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:52:03,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:52:04,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:04,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156596793] [2023-11-24 23:52:04,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46428715] [2023-11-24 23:52:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46428715] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:04,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:04,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-24 23:52:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544389993] [2023-11-24 23:52:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:52:04,300 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:04,391 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2023-11-24 23:52:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-24 23:52:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:04,393 INFO L225 Difference]: With dead ends: 90 [2023-11-24 23:52:04,394 INFO L226 Difference]: Without dead ends: 89 [2023-11-24 23:52:04,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:52:04,400 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 95 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:04,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 57 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:04,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-24 23:52:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-24 23:52:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 73 states have internal predecessors, (81), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:52:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2023-11-24 23:52:04,429 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 27 [2023-11-24 23:52:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:04,430 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2023-11-24 23:52:04,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2023-11-24 23:52:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:52:04,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:04,433 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:04,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:52:04,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:04,637 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:04,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash -261474705, now seen corresponding path program 1 times [2023-11-24 23:52:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491938629] [2023-11-24 23:52:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:04,663 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519590354] [2023-11-24 23:52:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:04,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:04,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:52:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:04,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:52:04,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:04,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:04,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:04,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491938629] [2023-11-24 23:52:04,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:04,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519590354] [2023-11-24 23:52:04,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519590354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:04,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:04,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111487731] [2023-11-24 23:52:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:04,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:04,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:04,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:04,793 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:04,870 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2023-11-24 23:52:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2023-11-24 23:52:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:04,874 INFO L225 Difference]: With dead ends: 101 [2023-11-24 23:52:04,875 INFO L226 Difference]: Without dead ends: 100 [2023-11-24 23:52:04,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:04,876 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:04,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 109 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:04,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-24 23:52:04,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2023-11-24 23:52:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 73 states have internal predecessors, (80), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:52:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2023-11-24 23:52:04,915 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 27 [2023-11-24 23:52:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:04,915 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2023-11-24 23:52:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2023-11-24 23:52:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 23:52:04,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:04,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 23:52:04,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:05,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:05,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 484176100, now seen corresponding path program 1 times [2023-11-24 23:52:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:05,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717368388] [2023-11-24 23:52:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:05,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:05,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:05,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132930723] [2023-11-24 23:52:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:05,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:05,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:05,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:52:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:05,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:52:05,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:52:05,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:05,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717368388] [2023-11-24 23:52:05,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132930723] [2023-11-24 23:52:05,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132930723] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:05,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:05,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-24 23:52:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114730064] [2023-11-24 23:52:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:05,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:52:05,530 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:05,635 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2023-11-24 23:52:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2023-11-24 23:52:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:05,638 INFO L225 Difference]: With dead ends: 91 [2023-11-24 23:52:05,638 INFO L226 Difference]: Without dead ends: 90 [2023-11-24 23:52:05,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:52:05,639 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 91 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:05,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 58 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-24 23:52:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-24 23:52:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.509433962264151) internal successors, (80), 74 states have internal predecessors, (80), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:52:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2023-11-24 23:52:05,654 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 28 [2023-11-24 23:52:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:05,655 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2023-11-24 23:52:05,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2023-11-24 23:52:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:52:05,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:05,656 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 23:52:05,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:05,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:52:05,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:05,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2124557295, now seen corresponding path program 1 times [2023-11-24 23:52:05,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:05,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967933905] [2023-11-24 23:52:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:05,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:05,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961742477] [2023-11-24 23:52:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:05,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:05,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:05,879 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:05,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:52:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:05,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:05,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:05,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:05,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967933905] [2023-11-24 23:52:05,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961742477] [2023-11-24 23:52:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961742477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:05,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135838548] [2023-11-24 23:52:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:05,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:05,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:05,994 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:06,168 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2023-11-24 23:52:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:06,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2023-11-24 23:52:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:06,171 INFO L225 Difference]: With dead ends: 124 [2023-11-24 23:52:06,171 INFO L226 Difference]: Without dead ends: 123 [2023-11-24 23:52:06,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:06,172 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 43 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:06,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 106 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-24 23:52:06,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2023-11-24 23:52:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 87 states have internal predecessors, (100), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:52:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2023-11-24 23:52:06,190 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 29 [2023-11-24 23:52:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:06,191 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2023-11-24 23:52:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2023-11-24 23:52:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:52:06,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:06,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:06,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:06,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:06,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:06,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1436766790, now seen corresponding path program 1 times [2023-11-24 23:52:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721013235] [2023-11-24 23:52:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:06,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074650271] [2023-11-24 23:52:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:06,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:06,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:06,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:06,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:52:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:06,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:52:06,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:52:06,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:06,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721013235] [2023-11-24 23:52:06,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074650271] [2023-11-24 23:52:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074650271] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:06,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:06,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-24 23:52:06,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941332526] [2023-11-24 23:52:06,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:06,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:52:06,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:06,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:52:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:52:06,907 INFO L87 Difference]: Start difference. First operand 105 states and 130 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:07,180 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2023-11-24 23:52:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:07,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2023-11-24 23:52:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:07,183 INFO L225 Difference]: With dead ends: 116 [2023-11-24 23:52:07,183 INFO L226 Difference]: Without dead ends: 115 [2023-11-24 23:52:07,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:52:07,185 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 141 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:07,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 72 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-24 23:52:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2023-11-24 23:52:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 89 states have internal predecessors, (101), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:52:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2023-11-24 23:52:07,211 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 30 [2023-11-24 23:52:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:07,212 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2023-11-24 23:52:07,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:52:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2023-11-24 23:52:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:52:07,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:07,221 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:07,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:07,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:52:07,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:07,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2035367729, now seen corresponding path program 1 times [2023-11-24 23:52:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019268228] [2023-11-24 23:52:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:07,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:07,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958362199] [2023-11-24 23:52:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:07,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:07,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:07,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:07,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:52:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:07,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:52:07,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:52:07,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:07,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019268228] [2023-11-24 23:52:07,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958362199] [2023-11-24 23:52:07,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958362199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:07,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:07,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:52:07,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101317949] [2023-11-24 23:52:07,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:07,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:52:07,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:52:07,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:07,758 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 7 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-24 23:52:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:07,953 INFO L93 Difference]: Finished difference Result 125 states and 153 transitions. [2023-11-24 23:52:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:52:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 37 [2023-11-24 23:52:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:07,955 INFO L225 Difference]: With dead ends: 125 [2023-11-24 23:52:07,956 INFO L226 Difference]: Without dead ends: 113 [2023-11-24 23:52:07,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:07,957 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:07,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 148 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-24 23:52:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-11-24 23:52:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.368421052631579) internal successors, (104), 93 states have internal predecessors, (104), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-24 23:52:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 138 transitions. [2023-11-24 23:52:07,981 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 138 transitions. Word has length 37 [2023-11-24 23:52:07,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:07,981 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 138 transitions. [2023-11-24 23:52:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-24 23:52:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 138 transitions. [2023-11-24 23:52:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:52:07,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:07,983 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:07,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:08,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:08,189 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:08,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1328109789, now seen corresponding path program 1 times [2023-11-24 23:52:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:08,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085444111] [2023-11-24 23:52:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:08,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845654788] [2023-11-24 23:52:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:08,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:08,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:08,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:52:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:08,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:52:08,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:52:08,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:08,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085444111] [2023-11-24 23:52:08,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845654788] [2023-11-24 23:52:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845654788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1414433465] [2023-11-24 23:52:08,664 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-24 23:52:08,664 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:08,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:08,674 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:08,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:12,340 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-24 23:52:12,342 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:52:12,343 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:18,158 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3439#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-11-24 23:52:18,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:18,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:18,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-24 23:52:18,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874316167] [2023-11-24 23:52:18,159 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:18,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:52:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:52:18,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:52:18,162 INFO L87 Difference]: Start difference. First operand 113 states and 138 transitions. Second operand has 7 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-24 23:52:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:18,694 INFO L93 Difference]: Finished difference Result 192 states and 237 transitions. [2023-11-24 23:52:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:52:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 38 [2023-11-24 23:52:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:18,697 INFO L225 Difference]: With dead ends: 192 [2023-11-24 23:52:18,697 INFO L226 Difference]: Without dead ends: 188 [2023-11-24 23:52:18,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:52:18,699 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 138 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:18,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 137 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:52:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-24 23:52:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 173. [2023-11-24 23:52:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 127 states have (on average 1.3543307086614174) internal successors, (172), 144 states have internal predecessors, (172), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:52:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 224 transitions. [2023-11-24 23:52:18,725 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 224 transitions. Word has length 38 [2023-11-24 23:52:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:18,726 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 224 transitions. [2023-11-24 23:52:18,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-24 23:52:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 224 transitions. [2023-11-24 23:52:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:52:18,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:18,728 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:18,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:18,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:18,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:18,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:18,930 INFO L85 PathProgramCache]: Analyzing trace with hash -504408795, now seen corresponding path program 1 times [2023-11-24 23:52:18,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:18,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413355253] [2023-11-24 23:52:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:18,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:18,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:18,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307516386] [2023-11-24 23:52:18,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:18,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:18,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:18,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:18,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:52:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:19,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:19,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:19,088 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:52:19,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:19,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:19,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413355253] [2023-11-24 23:52:19,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:19,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307516386] [2023-11-24 23:52:19,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307516386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:19,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:19,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:19,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317267897] [2023-11-24 23:52:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:19,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:19,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:19,093 INFO L87 Difference]: Start difference. First operand 173 states and 224 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:19,172 INFO L93 Difference]: Finished difference Result 196 states and 247 transitions. [2023-11-24 23:52:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:19,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2023-11-24 23:52:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:19,175 INFO L225 Difference]: With dead ends: 196 [2023-11-24 23:52:19,175 INFO L226 Difference]: Without dead ends: 194 [2023-11-24 23:52:19,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 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 23:52:19,177 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 30 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:19,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 86 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-24 23:52:19,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 175. [2023-11-24 23:52:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.3488372093023255) internal successors, (174), 146 states have internal predecessors, (174), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:52:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 226 transitions. [2023-11-24 23:52:19,208 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 226 transitions. Word has length 40 [2023-11-24 23:52:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:19,209 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 226 transitions. [2023-11-24 23:52:19,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 226 transitions. [2023-11-24 23:52:19,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:52:19,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:19,211 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:19,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:19,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:52:19,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:19,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:19,430 INFO L85 PathProgramCache]: Analyzing trace with hash 594456455, now seen corresponding path program 1 times [2023-11-24 23:52:19,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:19,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695993983] [2023-11-24 23:52:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:19,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:19,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:19,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518229732] [2023-11-24 23:52:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:19,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:19,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:19,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:19,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:52:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:19,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:19,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:52:19,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:19,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:19,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695993983] [2023-11-24 23:52:19,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518229732] [2023-11-24 23:52:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518229732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:19,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440609095] [2023-11-24 23:52:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:19,597 INFO L87 Difference]: Start difference. First operand 175 states and 226 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:20,053 INFO L93 Difference]: Finished difference Result 189 states and 238 transitions. [2023-11-24 23:52:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:20,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 42 [2023-11-24 23:52:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:20,056 INFO L225 Difference]: With dead ends: 189 [2023-11-24 23:52:20,056 INFO L226 Difference]: Without dead ends: 188 [2023-11-24 23:52:20,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:20,057 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:20,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 103 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:52:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-24 23:52:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 176. [2023-11-24 23:52:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.3461538461538463) internal successors, (175), 147 states have internal predecessors, (175), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:52:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 227 transitions. [2023-11-24 23:52:20,081 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 227 transitions. Word has length 42 [2023-11-24 23:52:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:20,082 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 227 transitions. [2023-11-24 23:52:20,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 227 transitions. [2023-11-24 23:52:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-24 23:52:20,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:20,083 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:20,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:20,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:52:20,295 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:20,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1248281050, now seen corresponding path program 1 times [2023-11-24 23:52:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016253984] [2023-11-24 23:52:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:20,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:20,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:20,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323500334] [2023-11-24 23:52:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:20,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:20,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:20,322 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:20,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:52:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:20,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:52:20,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:52:20,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:52:20,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016253984] [2023-11-24 23:52:20,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323500334] [2023-11-24 23:52:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323500334] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-24 23:52:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138114431] [2023-11-24 23:52:20,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:52:20,660 INFO L87 Difference]: Start difference. First operand 176 states and 227 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:52:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:21,026 INFO L93 Difference]: Finished difference Result 181 states and 231 transitions. [2023-11-24 23:52:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:52:21,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 43 [2023-11-24 23:52:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:21,029 INFO L225 Difference]: With dead ends: 181 [2023-11-24 23:52:21,029 INFO L226 Difference]: Without dead ends: 166 [2023-11-24 23:52:21,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:52:21,031 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 19 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 122 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-24 23:52:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-24 23:52:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 122 states have (on average 1.360655737704918) internal successors, (166), 139 states have internal predecessors, (166), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:52:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2023-11-24 23:52:21,073 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 43 [2023-11-24 23:52:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:21,073 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2023-11-24 23:52:21,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:52:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2023-11-24 23:52:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-24 23:52:21,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:21,074 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:21,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:52:21,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:21,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash -900469139, now seen corresponding path program 1 times [2023-11-24 23:52:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:21,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913418048] [2023-11-24 23:52:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:21,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:21,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130535857] [2023-11-24 23:52:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:21,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:21,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:21,306 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:21,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:52:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:21,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:21,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:52:21,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:21,488 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:52:21,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:21,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913418048] [2023-11-24 23:52:21,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:21,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130535857] [2023-11-24 23:52:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130535857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:21,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1265224460] [2023-11-24 23:52:21,494 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-24 23:52:21,494 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:21,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:21,495 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:21,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:23,599 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-24 23:52:23,600 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:52:23,602 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:25,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5994#(and (<= 1 |#StackHeapBarrier|) (<= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775807) (= |ULTIMATE.start_main_~q~0#1| 0) (= (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) |ULTIMATE.start_main_~d~0#1|) (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~d~0#1|))' at error location [2023-11-24 23:52:25,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:25,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:52:25,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-24 23:52:25,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283278379] [2023-11-24 23:52:25,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:25,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:25,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:52:25,372 INFO L87 Difference]: Start difference. First operand 166 states and 214 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-24 23:52:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:25,664 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2023-11-24 23:52:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:25,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 44 [2023-11-24 23:52:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:25,667 INFO L225 Difference]: With dead ends: 295 [2023-11-24 23:52:25,667 INFO L226 Difference]: Without dead ends: 293 [2023-11-24 23:52:25,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:52:25,668 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 129 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:25,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 203 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:25,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-24 23:52:25,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 235. [2023-11-24 23:52:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 179 states have (on average 1.3575418994413408) internal successors, (243), 196 states have internal predecessors, (243), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-24 23:52:25,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 315 transitions. [2023-11-24 23:52:25,703 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 315 transitions. Word has length 44 [2023-11-24 23:52:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:25,703 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 315 transitions. [2023-11-24 23:52:25,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-24 23:52:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 315 transitions. [2023-11-24 23:52:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-24 23:52:25,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:25,705 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:25,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:25,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:25,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:25,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:25,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1522967653, now seen corresponding path program 2 times [2023-11-24 23:52:25,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:25,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882605911] [2023-11-24 23:52:25,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:25,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:25,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:25,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236898031] [2023-11-24 23:52:25,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:52:25,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:25,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:25,939 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:25,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 23:52:25,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-24 23:52:25,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:26,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-24 23:52:26,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-24 23:52:26,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:26,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:26,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882605911] [2023-11-24 23:52:26,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236898031] [2023-11-24 23:52:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236898031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1468027718] [2023-11-24 23:52:26,856 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-11-24 23:52:26,856 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:26,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:26,857 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:26,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:28,693 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-24 23:52:28,694 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:52:28,696 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:30,518 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6874#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~p~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))))' at error location [2023-11-24 23:52:30,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:30,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-24 23:52:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104086569] [2023-11-24 23:52:30,519 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:30,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:52:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:52:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:52:30,523 INFO L87 Difference]: Start difference. First operand 235 states and 315 transitions. Second operand has 10 states, 6 states have (on average 4.333333333333333) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-24 23:52:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:31,365 INFO L93 Difference]: Finished difference Result 335 states and 435 transitions. [2023-11-24 23:52:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 23:52:31,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 6 states have (on average 4.333333333333333) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 55 [2023-11-24 23:52:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:31,370 INFO L225 Difference]: With dead ends: 335 [2023-11-24 23:52:31,370 INFO L226 Difference]: Without dead ends: 331 [2023-11-24 23:52:31,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:52:31,372 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 202 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:31,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 159 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:52:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-24 23:52:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 235. [2023-11-24 23:52:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 179 states have (on average 1.3463687150837989) internal successors, (241), 196 states have internal predecessors, (241), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-24 23:52:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 313 transitions. [2023-11-24 23:52:31,403 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 313 transitions. Word has length 55 [2023-11-24 23:52:31,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:31,404 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 313 transitions. [2023-11-24 23:52:31,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 6 states have (on average 4.333333333333333) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-24 23:52:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 313 transitions. [2023-11-24 23:52:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-24 23:52:31,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:31,405 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:31,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-24 23:52:31,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:31,611 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:31,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -135496324, now seen corresponding path program 1 times [2023-11-24 23:52:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:31,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727592224] [2023-11-24 23:52:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:31,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:31,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247822697] [2023-11-24 23:52:31,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:31,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:31,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:31,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-24 23:52:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:31,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:52:31,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-24 23:52:31,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:31,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727592224] [2023-11-24 23:52:31,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247822697] [2023-11-24 23:52:31,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247822697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:31,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:31,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:31,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995346600] [2023-11-24 23:52:31,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:31,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:31,709 INFO L87 Difference]: Start difference. First operand 235 states and 313 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-24 23:52:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:31,782 INFO L93 Difference]: Finished difference Result 235 states and 313 transitions. [2023-11-24 23:52:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:31,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2023-11-24 23:52:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:31,785 INFO L225 Difference]: With dead ends: 235 [2023-11-24 23:52:31,785 INFO L226 Difference]: Without dead ends: 234 [2023-11-24 23:52:31,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 23:52:31,786 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:31,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 101 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-24 23:52:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2023-11-24 23:52:31,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 179 states have (on average 1.329608938547486) internal successors, (238), 195 states have internal predecessors, (238), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-24 23:52:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 310 transitions. [2023-11-24 23:52:31,820 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 310 transitions. Word has length 62 [2023-11-24 23:52:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:31,821 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 310 transitions. [2023-11-24 23:52:31,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-24 23:52:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 310 transitions. [2023-11-24 23:52:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-24 23:52:31,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:31,823 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:31,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:32,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:32,029 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:32,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash 94581363, now seen corresponding path program 1 times [2023-11-24 23:52:32,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:32,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827656003] [2023-11-24 23:52:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:32,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:32,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409269436] [2023-11-24 23:52:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:32,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:32,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-24 23:52:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:32,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:52:32,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-24 23:52:32,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:32,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:32,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827656003] [2023-11-24 23:52:32,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:32,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409269436] [2023-11-24 23:52:32,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409269436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:52:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222324121] [2023-11-24 23:52:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:32,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:52:32,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:32,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:52:32,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:32,381 INFO L87 Difference]: Start difference. First operand 234 states and 310 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-24 23:52:33,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:33,001 INFO L93 Difference]: Finished difference Result 439 states and 581 transitions. [2023-11-24 23:52:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:52:33,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 63 [2023-11-24 23:52:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:33,004 INFO L225 Difference]: With dead ends: 439 [2023-11-24 23:52:33,004 INFO L226 Difference]: Without dead ends: 298 [2023-11-24 23:52:33,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:52:33,008 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 50 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:33,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 258 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:52:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-24 23:52:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 204. [2023-11-24 23:52:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 156 states have (on average 1.314102564102564) internal successors, (205), 171 states have internal predecessors, (205), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-24 23:52:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 265 transitions. [2023-11-24 23:52:33,049 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 265 transitions. Word has length 63 [2023-11-24 23:52:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:33,049 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 265 transitions. [2023-11-24 23:52:33,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-24 23:52:33,050 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 265 transitions. [2023-11-24 23:52:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-24 23:52:33,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:33,052 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:33,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:33,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-24 23:52:33,258 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:33,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1362944930, now seen corresponding path program 1 times [2023-11-24 23:52:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:33,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429339726] [2023-11-24 23:52:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:33,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:33,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:33,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819911923] [2023-11-24 23:52:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:33,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:33,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:33,280 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-24 23:52:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:33,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:33,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-24 23:52:33,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:33,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429339726] [2023-11-24 23:52:33,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819911923] [2023-11-24 23:52:33,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819911923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:33,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:33,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:52:33,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255385929] [2023-11-24 23:52:33,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:33,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:52:33,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:33,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:52:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:33,535 INFO L87 Difference]: Start difference. First operand 204 states and 265 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:33,825 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2023-11-24 23:52:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:52:33,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2023-11-24 23:52:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:33,828 INFO L225 Difference]: With dead ends: 214 [2023-11-24 23:52:33,828 INFO L226 Difference]: Without dead ends: 213 [2023-11-24 23:52:33,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:33,829 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 41 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:33,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 107 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-24 23:52:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2023-11-24 23:52:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.3081761006289307) internal successors, (208), 174 states have internal predecessors, (208), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-24 23:52:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 268 transitions. [2023-11-24 23:52:33,862 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 268 transitions. Word has length 64 [2023-11-24 23:52:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:33,863 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 268 transitions. [2023-11-24 23:52:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 268 transitions. [2023-11-24 23:52:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:52:33,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:33,864 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:33,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:34,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-24 23:52:34,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:34,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash 698380245, now seen corresponding path program 1 times [2023-11-24 23:52:34,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:34,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123662969] [2023-11-24 23:52:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:34,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:34,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:34,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64464483] [2023-11-24 23:52:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:34,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:34,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:34,081 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:34,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-24 23:52:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:34,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:34,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-24 23:52:34,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:34,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123662969] [2023-11-24 23:52:34,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:34,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64464483] [2023-11-24 23:52:34,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64464483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:34,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:34,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498866136] [2023-11-24 23:52:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:34,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:34,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:34,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:34,268 INFO L87 Difference]: Start difference. First operand 207 states and 268 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:34,456 INFO L93 Difference]: Finished difference Result 213 states and 274 transitions. [2023-11-24 23:52:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-24 23:52:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:34,459 INFO L225 Difference]: With dead ends: 213 [2023-11-24 23:52:34,459 INFO L226 Difference]: Without dead ends: 211 [2023-11-24 23:52:34,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 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 23:52:34,460 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:34,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 78 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-24 23:52:34,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2023-11-24 23:52:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 162 states have (on average 1.2901234567901234) internal successors, (209), 177 states have internal predecessors, (209), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-24 23:52:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 269 transitions. [2023-11-24 23:52:34,496 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 269 transitions. Word has length 65 [2023-11-24 23:52:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:34,497 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 269 transitions. [2023-11-24 23:52:34,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:52:34,497 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 269 transitions. [2023-11-24 23:52:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:52:34,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:34,498 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:34,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-24 23:52:34,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:34,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:52:34,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:34,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1128519735, now seen corresponding path program 1 times [2023-11-24 23:52:34,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:34,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097932516] [2023-11-24 23:52:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:34,715 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:34,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130794968] [2023-11-24 23:52:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:34,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:34,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:34,717 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:34,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3888d36c-d653-45de-b397-c3e1026f6e99/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-24 23:52:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:34,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 23:52:34,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-24 23:52:35,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:36,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097932516] [2023-11-24 23:52:36,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130794968] [2023-11-24 23:52:36,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130794968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:36,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371458928] [2023-11-24 23:52:36,244 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-11-24 23:52:36,244 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:36,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:36,245 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:36,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:39,885 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-24 23:52:39,886 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:52:39,888 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:48,737 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10985#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= (+ (* |ULTIMATE.start_main_~q~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) 9223372036854775809) 0) (exists ((|v_ULTIMATE.start_main_~p~0#1_74| Int)) (and (or (< 0 (+ (div |v_ULTIMATE.start_main_~p~0#1_74| 2) 9223372036854775809)) (and (= (+ (div |v_ULTIMATE.start_main_~p~0#1_74| 2) 9223372036854775809) 0) (not (= (mod |v_ULTIMATE.start_main_~p~0#1_74| 2) 0)))) (or (and (= (div |v_ULTIMATE.start_main_~p~0#1_74| 2) |ULTIMATE.start_main_~p~0#1|) (or (= (mod |v_ULTIMATE.start_main_~p~0#1_74| 2) 0) (< 0 (+ |v_ULTIMATE.start_main_~p~0#1_74| 1)))) (and (<= (+ |v_ULTIMATE.start_main_~p~0#1_74| 1) 0) (not (= (mod |v_ULTIMATE.start_main_~p~0#1_74| 2) 0)) (= |ULTIMATE.start_main_~p~0#1| (+ (div |v_ULTIMATE.start_main_~p~0#1_74| 2) 1)))) (or (< (div |v_ULTIMATE.start_main_~p~0#1_74| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~p~0#1_74| 2) 9223372036854775807)))) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-11-24 23:52:48,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:48,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:48,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-24 23:52:48,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598543715] [2023-11-24 23:52:48,738 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:48,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:52:48,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:48,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:52:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1707, Unknown=0, NotChecked=0, Total=1980 [2023-11-24 23:52:48,741 INFO L87 Difference]: Start difference. First operand 210 states and 269 transitions. Second operand has 11 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11)