./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.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_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh --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 a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:47:20,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:47:20,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:47:20,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:47:20,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:47:20,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:47:20,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:47:20,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:47:20,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:47:20,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:47:20,849 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:47:20,850 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:47:20,851 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:47:20,851 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:47:20,852 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:47:20,852 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:47:20,853 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:47:20,853 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:47:20,854 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:47:20,855 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:47:20,855 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:47:20,858 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:47:20,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:47:20,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:47:20,859 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:47:20,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:47:20,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:47:20,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:47:20,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:47:20,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:47:20,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:47:20,862 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:47:20,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:47:20,863 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:47:20,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:47:20,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:47:20,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:47:20,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:47:20,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:47:20,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:20,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:47:20,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:47:20,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:47:20,865 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:47:20,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:47:20,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:47:20,866 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:47:20,866 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:47:20,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:47:20,866 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_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811 [2023-12-02 15:47:21,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:47:21,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:47:21,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:47:21,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:47:21,078 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:47:21,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2023-12-02 15:47:23,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:47:23,989 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:47:23,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c [2023-12-02 15:47:23,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/data/f278f997e/52497577ab214bb7bf9df531f9319060/FLAGcd98f9629 [2023-12-02 15:47:24,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/data/f278f997e/52497577ab214bb7bf9df531f9319060 [2023-12-02 15:47:24,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:47:24,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:47:24,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:24,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:47:24,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:47:24,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0ad605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24, skipping insertion in model container [2023-12-02 15:47:24,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:47:24,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:24,207 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:47:24,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:47:24,235 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:47:24,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24 WrapperNode [2023-12-02 15:47:24,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:47:24,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:24,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:47:24,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:47:24,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,273 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2023-12-02 15:47:24,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:47:24,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:47:24,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:47:24,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:47:24,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:47:24,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:47:24,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:47:24,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:47:24,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (1/1) ... [2023-12-02 15:47:24,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:47:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:24,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:47:24,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:47:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:47:24,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:47:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:47:24,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:47:24,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:47:24,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:47:24,408 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:47:24,410 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:47:24,623 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:47:24,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:47:24,668 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 15:47:24,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:24 BoogieIcfgContainer [2023-12-02 15:47:24,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:47:24,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:47:24,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:47:24,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:47:24,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:47:24" (1/3) ... [2023-12-02 15:47:24,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39651ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:24, skipping insertion in model container [2023-12-02 15:47:24,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:47:24" (2/3) ... [2023-12-02 15:47:24,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39651ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:47:24, skipping insertion in model container [2023-12-02 15:47:24,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:47:24" (3/3) ... [2023-12-02 15:47:24,680 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c [2023-12-02 15:47:24,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:47:24,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-12-02 15:47:24,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:47:24,739 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;@7f779dd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:47:24,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-12-02 15:47:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:47:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 15:47:24,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:24,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 15:47:24,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:24,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash 5411999, now seen corresponding path program 1 times [2023-12-02 15:47:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022703691] [2023-12-02 15:47:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:24,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:24,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022703691] [2023-12-02 15:47:24,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 15:47:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043237364] [2023-12-02 15:47:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:24,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:24,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:24,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:47:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:24,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:47:24,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:47:24,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:24,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043237364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:24,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:24,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898131292] [2023-12-02 15:47:24,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:47:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:24,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:47:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:47:24,984 INFO L87 Difference]: Start difference. First operand has 65 states, 32 states have (on average 1.90625) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:47:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:25,028 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2023-12-02 15:47:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:47:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 15:47:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:25,036 INFO L225 Difference]: With dead ends: 112 [2023-12-02 15:47:25,037 INFO L226 Difference]: Without dead ends: 61 [2023-12-02 15:47:25,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:47:25,043 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:25,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-02 15:47:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-02 15:47:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 54 states have internal predecessors, (57), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:47:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2023-12-02 15:47:25,089 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 4 [2023-12-02 15:47:25,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:25,089 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2023-12-02 15:47:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:47:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2023-12-02 15:47:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:47:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:25,091 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:25,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:47:25,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:47:25,292 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)] === [2023-12-02 15:47:25,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1773892784, now seen corresponding path program 1 times [2023-12-02 15:47:25,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:25,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794280285] [2023-12-02 15:47:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:25,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:25,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195597512] [2023-12-02 15:47:25,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:25,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:25,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:25,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:25,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:47:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:25,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:25,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:47:25,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:25,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794280285] [2023-12-02 15:47:25,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195597512] [2023-12-02 15:47:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195597512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:25,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:25,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453085454] [2023-12-02 15:47:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:25,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:25,429 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:47:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:25,508 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2023-12-02 15:47:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:25,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 9 [2023-12-02 15:47:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:25,511 INFO L225 Difference]: With dead ends: 93 [2023-12-02 15:47:25,511 INFO L226 Difference]: Without dead ends: 89 [2023-12-02 15:47:25,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:25,513 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:25,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 66 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-02 15:47:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2023-12-02 15:47:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 63 states have internal predecessors, (74), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:47:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2023-12-02 15:47:25,526 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 9 [2023-12-02 15:47:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:25,528 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2023-12-02 15:47:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:47:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2023-12-02 15:47:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:47:25,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:25,529 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:25,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 15:47:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:25,730 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:25,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 843898598, now seen corresponding path program 1 times [2023-12-02 15:47:25,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:25,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304480285] [2023-12-02 15:47:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:25,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21591694] [2023-12-02 15:47:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:25,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:25,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:47:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:25,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:25,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:47:25,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:25,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304480285] [2023-12-02 15:47:25,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21591694] [2023-12-02 15:47:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21591694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:25,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699403678] [2023-12-02 15:47:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:25,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:25,817 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:47:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:25,915 INFO L93 Difference]: Finished difference Result 141 states and 174 transitions. [2023-12-02 15:47:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-12-02 15:47:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:25,917 INFO L225 Difference]: With dead ends: 141 [2023-12-02 15:47:25,917 INFO L226 Difference]: Without dead ends: 137 [2023-12-02 15:47:25,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:25,919 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:25,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 74 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-02 15:47:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 115. [2023-12-02 15:47:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.7179487179487178) internal successors, (134), 99 states have internal predecessors, (134), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:47:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 162 transitions. [2023-12-02 15:47:25,939 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 162 transitions. Word has length 10 [2023-12-02 15:47:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:25,939 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 162 transitions. [2023-12-02 15:47:25,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:47:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 162 transitions. [2023-12-02 15:47:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:47:25,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:25,940 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:25,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:47:26,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:26,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:26,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1034739291, now seen corresponding path program 1 times [2023-12-02 15:47:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874482723] [2023-12-02 15:47:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:26,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:26,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54427875] [2023-12-02 15:47:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:26,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:26,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:47:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:26,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:26,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:47:26,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:26,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874482723] [2023-12-02 15:47:26,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54427875] [2023-12-02 15:47:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54427875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:26,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:26,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473563989] [2023-12-02 15:47:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:26,233 INFO L87 Difference]: Start difference. First operand 115 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 15:47:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:26,285 INFO L93 Difference]: Finished difference Result 129 states and 169 transitions. [2023-12-02 15:47:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 15:47:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:26,287 INFO L225 Difference]: With dead ends: 129 [2023-12-02 15:47:26,287 INFO L226 Difference]: Without dead ends: 127 [2023-12-02 15:47:26,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:26,289 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 30 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:26,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 77 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-02 15:47:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2023-12-02 15:47:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 78 states have (on average 1.6666666666666667) internal successors, (130), 98 states have internal predecessors, (130), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 15:47:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2023-12-02 15:47:26,305 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 15 [2023-12-02 15:47:26,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:26,305 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2023-12-02 15:47:26,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 15:47:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2023-12-02 15:47:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:47:26,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:26,306 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:26,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:47:26,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2012148263, now seen corresponding path program 1 times [2023-12-02 15:47:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966887578] [2023-12-02 15:47:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:26,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:26,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485518467] [2023-12-02 15:47:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:26,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:26,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:47:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:26,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:26,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:47:26,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:26,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966887578] [2023-12-02 15:47:26,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485518467] [2023-12-02 15:47:26,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485518467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:26,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:26,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394272186] [2023-12-02 15:47:26,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:26,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:26,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:26,644 INFO L87 Difference]: Start difference. First operand 114 states and 158 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-02 15:47:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:26,710 INFO L93 Difference]: Finished difference Result 174 states and 237 transitions. [2023-12-02 15:47:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16 [2023-12-02 15:47:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:26,712 INFO L225 Difference]: With dead ends: 174 [2023-12-02 15:47:26,713 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 15:47:26,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:26,714 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:26,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 62 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 15:47:26,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 144. [2023-12-02 15:47:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.6730769230769231) internal successors, (174), 124 states have internal predecessors, (174), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:47:26,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 210 transitions. [2023-12-02 15:47:26,733 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 210 transitions. Word has length 16 [2023-12-02 15:47:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:26,733 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 210 transitions. [2023-12-02 15:47:26,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-02 15:47:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 210 transitions. [2023-12-02 15:47:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:47:26,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:26,734 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:26,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:47:26,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:26,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2012146885, now seen corresponding path program 1 times [2023-12-02 15:47:26,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:26,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119488772] [2023-12-02 15:47:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:26,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:26,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641129379] [2023-12-02 15:47:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:26,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:26,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:26,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:26,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:47:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:26,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:26,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:47:27,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:27,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119488772] [2023-12-02 15:47:27,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641129379] [2023-12-02 15:47:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641129379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:27,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299290246] [2023-12-02 15:47:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:27,016 INFO L87 Difference]: Start difference. First operand 144 states and 210 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-02 15:47:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:27,086 INFO L93 Difference]: Finished difference Result 164 states and 217 transitions. [2023-12-02 15:47:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:27,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16 [2023-12-02 15:47:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:27,089 INFO L225 Difference]: With dead ends: 164 [2023-12-02 15:47:27,089 INFO L226 Difference]: Without dead ends: 162 [2023-12-02 15:47:27,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:27,090 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:27,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 82 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-02 15:47:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 144. [2023-12-02 15:47:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.6346153846153846) internal successors, (170), 124 states have internal predecessors, (170), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:47:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 206 transitions. [2023-12-02 15:47:27,106 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 206 transitions. Word has length 16 [2023-12-02 15:47:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:27,107 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 206 transitions. [2023-12-02 15:47:27,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-12-02 15:47:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 206 transitions. [2023-12-02 15:47:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 15:47:27,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:27,108 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:27,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:47:27,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:47:27,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:27,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:27,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2047913370, now seen corresponding path program 1 times [2023-12-02 15:47:27,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394740400] [2023-12-02 15:47:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:27,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023316430] [2023-12-02 15:47:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:27,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:27,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:27,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:27,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:47:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:27,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:27,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:47:27,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:27,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394740400] [2023-12-02 15:47:27,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023316430] [2023-12-02 15:47:27,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023316430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:27,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:27,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:27,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112966492] [2023-12-02 15:47:27,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:27,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:27,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:27,415 INFO L87 Difference]: Start difference. First operand 144 states and 206 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-12-02 15:47:27,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:27,475 INFO L93 Difference]: Finished difference Result 173 states and 229 transitions. [2023-12-02 15:47:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:27,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 17 [2023-12-02 15:47:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:27,477 INFO L225 Difference]: With dead ends: 173 [2023-12-02 15:47:27,477 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 15:47:27,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:27,479 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 43 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:27,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 63 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:27,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 15:47:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2023-12-02 15:47:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.5961538461538463) internal successors, (166), 124 states have internal predecessors, (166), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:47:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 202 transitions. [2023-12-02 15:47:27,494 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 202 transitions. Word has length 17 [2023-12-02 15:47:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:27,494 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 202 transitions. [2023-12-02 15:47:27,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-12-02 15:47:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 202 transitions. [2023-12-02 15:47:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 15:47:27,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:27,495 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:27,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:47:27,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:47:27,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:27,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash -939194885, now seen corresponding path program 1 times [2023-12-02 15:47:27,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407692433] [2023-12-02 15:47:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:27,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:27,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:27,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328016171] [2023-12-02 15:47:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:27,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:27,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:27,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:27,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:47:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:27,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:27,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:47:27,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:27,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:27,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407692433] [2023-12-02 15:47:27,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:27,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328016171] [2023-12-02 15:47:27,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328016171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:27,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:27,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:47:27,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375582723] [2023-12-02 15:47:27,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:47:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:47:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:27,789 INFO L87 Difference]: Start difference. First operand 144 states and 202 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-12-02 15:47:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:27,857 INFO L93 Difference]: Finished difference Result 166 states and 217 transitions. [2023-12-02 15:47:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 18 [2023-12-02 15:47:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:27,860 INFO L225 Difference]: With dead ends: 166 [2023-12-02 15:47:27,860 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 15:47:27,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:27,861 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 79 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:27,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 72 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 15:47:27,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 144. [2023-12-02 15:47:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.5576923076923077) internal successors, (162), 124 states have internal predecessors, (162), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:47:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 198 transitions. [2023-12-02 15:47:27,875 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 198 transitions. Word has length 18 [2023-12-02 15:47:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:27,876 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 198 transitions. [2023-12-02 15:47:27,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-12-02 15:47:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 198 transitions. [2023-12-02 15:47:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:47:27,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:27,877 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:27,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:47:28,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 15:47:28,082 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:28,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:28,082 INFO L85 PathProgramCache]: Analyzing trace with hash 949729724, now seen corresponding path program 1 times [2023-12-02 15:47:28,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:28,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930726774] [2023-12-02 15:47:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:28,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305867667] [2023-12-02 15:47:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:28,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:28,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:28,095 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:28,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:47:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:28,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:47:28,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 15:47:28,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:28,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930726774] [2023-12-02 15:47:28,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305867667] [2023-12-02 15:47:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305867667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:28,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:47:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068037767] [2023-12-02 15:47:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:28,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:47:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:47:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:47:28,244 INFO L87 Difference]: Start difference. First operand 144 states and 198 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-12-02 15:47:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:28,437 INFO L93 Difference]: Finished difference Result 198 states and 248 transitions. [2023-12-02 15:47:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:47:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 19 [2023-12-02 15:47:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:28,439 INFO L225 Difference]: With dead ends: 198 [2023-12-02 15:47:28,439 INFO L226 Difference]: Without dead ends: 197 [2023-12-02 15:47:28,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:47:28,441 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 129 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:28,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 77 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:28,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-02 15:47:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 144. [2023-12-02 15:47:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 124 states have internal predecessors, (160), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:47:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 196 transitions. [2023-12-02 15:47:28,457 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 196 transitions. Word has length 19 [2023-12-02 15:47:28,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:28,457 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 196 transitions. [2023-12-02 15:47:28,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-12-02 15:47:28,458 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 196 transitions. [2023-12-02 15:47:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 15:47:28,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:28,459 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:28,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:47:28,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:28,660 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)] === [2023-12-02 15:47:28,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -288529031, now seen corresponding path program 1 times [2023-12-02 15:47:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891519989] [2023-12-02 15:47:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:28,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:28,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985823339] [2023-12-02 15:47:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:28,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:28,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:28,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:47:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:28,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:47:28,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:47:28,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:47:28,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891519989] [2023-12-02 15:47:28,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985823339] [2023-12-02 15:47:28,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985823339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:47:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [616555005] [2023-12-02 15:47:28,942 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:47:28,942 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:47:28,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:47:28,948 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:47:28,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:47:30,936 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 15:47:30,937 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:47:31,621 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3410#(and (<= 1 |#StackHeapBarrier|) (<= 2147483648 |ULTIMATE.start_main_~p~0#1|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 5) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))' at error location [2023-12-02 15:47:31,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:47:31,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:47:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-12-02 15:47:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173832378] [2023-12-02 15:47:31,622 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:47:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:47:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:31,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:47:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:47:31,623 INFO L87 Difference]: Start difference. First operand 144 states and 196 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:47:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:31,738 INFO L93 Difference]: Finished difference Result 230 states and 305 transitions. [2023-12-02 15:47:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:47:31,739 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2023-12-02 15:47:31,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:31,741 INFO L225 Difference]: With dead ends: 230 [2023-12-02 15:47:31,741 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 15:47:31,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:47:31,742 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 96 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:31,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 83 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 15:47:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2023-12-02 15:47:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 153 states have (on average 1.5359477124183007) internal successors, (235), 173 states have internal predecessors, (235), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:47:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 289 transitions. [2023-12-02 15:47:31,760 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 289 transitions. Word has length 27 [2023-12-02 15:47:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:31,761 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 289 transitions. [2023-12-02 15:47:31,761 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:47:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 289 transitions. [2023-12-02 15:47:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 15:47:31,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:31,762 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:31,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:47:31,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:47:31,966 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)] === [2023-12-02 15:47:31,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2126612347, now seen corresponding path program 1 times [2023-12-02 15:47:31,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:31,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195065850] [2023-12-02 15:47:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:31,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:31,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417865866] [2023-12-02 15:47:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:31,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:31,976 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:31,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:47:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:32,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:32,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:47:32,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:32,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:32,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195065850] [2023-12-02 15:47:32,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:32,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417865866] [2023-12-02 15:47:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417865866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:32,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:32,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438132886] [2023-12-02 15:47:32,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:32,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:32,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:32,051 INFO L87 Difference]: Start difference. First operand 202 states and 289 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:32,102 INFO L93 Difference]: Finished difference Result 233 states and 320 transitions. [2023-12-02 15:47:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2023-12-02 15:47:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:32,104 INFO L225 Difference]: With dead ends: 233 [2023-12-02 15:47:32,104 INFO L226 Difference]: Without dead ends: 231 [2023-12-02 15:47:32,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:32,106 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 34 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:32,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 78 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-02 15:47:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 204. [2023-12-02 15:47:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 155 states have (on average 1.5290322580645161) internal successors, (237), 175 states have internal predecessors, (237), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:47:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 291 transitions. [2023-12-02 15:47:32,125 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 291 transitions. Word has length 29 [2023-12-02 15:47:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:32,125 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 291 transitions. [2023-12-02 15:47:32,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 291 transitions. [2023-12-02 15:47:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 15:47:32,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:32,127 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:32,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:47:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:32,330 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)] === [2023-12-02 15:47:32,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash -729963363, now seen corresponding path program 1 times [2023-12-02 15:47:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223893957] [2023-12-02 15:47:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:32,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642064959] [2023-12-02 15:47:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:32,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:32,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:47:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:32,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:32,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:47:32,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:32,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:32,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223893957] [2023-12-02 15:47:32,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:32,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642064959] [2023-12-02 15:47:32,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642064959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:32,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:32,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:47:32,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163783990] [2023-12-02 15:47:32,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:32,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:47:32,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:47:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:32,425 INFO L87 Difference]: Start difference. First operand 204 states and 291 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:32,525 INFO L93 Difference]: Finished difference Result 229 states and 307 transitions. [2023-12-02 15:47:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:47:32,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2023-12-02 15:47:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:32,528 INFO L225 Difference]: With dead ends: 229 [2023-12-02 15:47:32,528 INFO L226 Difference]: Without dead ends: 228 [2023-12-02 15:47:32,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:32,529 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 71 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:32,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 95 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-02 15:47:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 205. [2023-12-02 15:47:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 156 states have (on average 1.5256410256410255) internal successors, (238), 176 states have internal predecessors, (238), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:47:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 292 transitions. [2023-12-02 15:47:32,548 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 292 transitions. Word has length 31 [2023-12-02 15:47:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:32,548 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 292 transitions. [2023-12-02 15:47:32,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 292 transitions. [2023-12-02 15:47:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 15:47:32,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:32,550 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:32,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:47:32,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:32,754 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)] === [2023-12-02 15:47:32,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1154027642, now seen corresponding path program 1 times [2023-12-02 15:47:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450466523] [2023-12-02 15:47:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:32,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:32,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167736528] [2023-12-02 15:47:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:32,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:32,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:32,764 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:32,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:47:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:32,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:47:32,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:47:32,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:32,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450466523] [2023-12-02 15:47:32,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:32,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167736528] [2023-12-02 15:47:32,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167736528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:32,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:32,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:47:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865967245] [2023-12-02 15:47:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:47:32,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:47:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:47:32,882 INFO L87 Difference]: Start difference. First operand 205 states and 292 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:47:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:33,061 INFO L93 Difference]: Finished difference Result 252 states and 330 transitions. [2023-12-02 15:47:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:47:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2023-12-02 15:47:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:33,064 INFO L225 Difference]: With dead ends: 252 [2023-12-02 15:47:33,064 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 15:47:33,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:47:33,065 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 46 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:33,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 138 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:47:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 15:47:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 218. [2023-12-02 15:47:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 167 states have (on average 1.526946107784431) internal successors, (255), 187 states have internal predecessors, (255), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 15:47:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 313 transitions. [2023-12-02 15:47:33,084 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 313 transitions. Word has length 32 [2023-12-02 15:47:33,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:33,084 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 313 transitions. [2023-12-02 15:47:33,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:47:33,085 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 313 transitions. [2023-12-02 15:47:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 15:47:33,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:33,086 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 15:47:33,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-02 15:47:33,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:47:33,289 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)] === [2023-12-02 15:47:33,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash -943120498, now seen corresponding path program 1 times [2023-12-02 15:47:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012405127] [2023-12-02 15:47:33,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:33,297 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:33,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098054873] [2023-12-02 15:47:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:33,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:33,299 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:33,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:47:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:33,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:33,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:47:33,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:47:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:47:33,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012405127] [2023-12-02 15:47:33,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098054873] [2023-12-02 15:47:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098054873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:47:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [377974092] [2023-12-02 15:47:33,422 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-12-02 15:47:33,422 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:47:33,423 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:47:33,423 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:47:33,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:47:34,647 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 15:47:34,648 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:47:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [377974092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:35,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:47:35,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [3, 3] total 16 [2023-12-02 15:47:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634813917] [2023-12-02 15:47:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:35,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:47:35,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:35,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:47:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-02 15:47:35,103 INFO L87 Difference]: Start difference. First operand 218 states and 313 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:47:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:35,686 INFO L93 Difference]: Finished difference Result 239 states and 330 transitions. [2023-12-02 15:47:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:47:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-12-02 15:47:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:35,688 INFO L225 Difference]: With dead ends: 239 [2023-12-02 15:47:35,688 INFO L226 Difference]: Without dead ends: 220 [2023-12-02 15:47:35,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:47:35,690 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 137 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:35,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 82 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:47:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-02 15:47:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 169. [2023-12-02 15:47:35,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 127 states have (on average 1.4724409448818898) internal successors, (187), 144 states have internal predecessors, (187), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 15:47:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 233 transitions. [2023-12-02 15:47:35,713 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 233 transitions. Word has length 33 [2023-12-02 15:47:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:35,713 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 233 transitions. [2023-12-02 15:47:35,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:47:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 233 transitions. [2023-12-02 15:47:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 15:47:35,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:35,714 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:35,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 15:47:35,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 15:47:35,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:35,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash 116423658, now seen corresponding path program 1 times [2023-12-02 15:47:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:35,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63462015] [2023-12-02 15:47:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:35,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:35,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:35,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [794596010] [2023-12-02 15:47:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:35,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:35,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:35,923 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:35,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:47:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:35,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:47:35,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:47:35,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:35,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63462015] [2023-12-02 15:47:35,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794596010] [2023-12-02 15:47:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794596010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:35,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:35,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:47:35,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383965073] [2023-12-02 15:47:35,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:35,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:35,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:35,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:35,971 INFO L87 Difference]: Start difference. First operand 169 states and 233 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:36,013 INFO L93 Difference]: Finished difference Result 169 states and 233 transitions. [2023-12-02 15:47:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2023-12-02 15:47:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:36,015 INFO L225 Difference]: With dead ends: 169 [2023-12-02 15:47:36,015 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 15:47:36,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:36,016 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:36,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 87 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 15:47:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-12-02 15:47:36,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 143 states have internal predecessors, (184), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 15:47:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2023-12-02 15:47:36,035 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 34 [2023-12-02 15:47:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:36,035 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2023-12-02 15:47:36,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2023-12-02 15:47:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:47:36,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:36,036 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:36,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:47:36,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:47:36,237 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:47:36,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -685833785, now seen corresponding path program 1 times [2023-12-02 15:47:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407377630] [2023-12-02 15:47:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:36,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:36,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908748516] [2023-12-02 15:47:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:36,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:36,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:36,244 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:36,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:47:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:36,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:47:36,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:47:36,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:36,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407377630] [2023-12-02 15:47:36,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908748516] [2023-12-02 15:47:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908748516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:36,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:36,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:47:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866906422] [2023-12-02 15:47:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:36,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:47:36,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:47:36,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:36,305 INFO L87 Difference]: Start difference. First operand 168 states and 230 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:36,355 INFO L93 Difference]: Finished difference Result 198 states and 250 transitions. [2023-12-02 15:47:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2023-12-02 15:47:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:36,357 INFO L225 Difference]: With dead ends: 198 [2023-12-02 15:47:36,357 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 15:47:36,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:47:36,358 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:36,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 15:47:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 15:47:36,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 102 states have internal predecessors, (121), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 15:47:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-12-02 15:47:36,374 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 35 [2023-12-02 15:47:36,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:36,374 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-12-02 15:47:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-12-02 15:47:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 15:47:36,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:36,376 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 15:47:36,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:47:36,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:47:36,576 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)] === [2023-12-02 15:47:36,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash -68421996, now seen corresponding path program 1 times [2023-12-02 15:47:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245554519] [2023-12-02 15:47:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:36,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:36,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435498130] [2023-12-02 15:47:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:36,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:36,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:36,586 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:36,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:47:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:36,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:47:36,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:47:36,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:36,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:36,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245554519] [2023-12-02 15:47:36,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435498130] [2023-12-02 15:47:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435498130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:36,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:47:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922509379] [2023-12-02 15:47:36,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:36,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:47:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:47:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:36,744 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-12-02 15:47:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:36,838 INFO L93 Difference]: Finished difference Result 226 states and 285 transitions. [2023-12-02 15:47:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:47:36,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 52 [2023-12-02 15:47:36,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:36,839 INFO L225 Difference]: With dead ends: 226 [2023-12-02 15:47:36,839 INFO L226 Difference]: Without dead ends: 224 [2023-12-02 15:47:36,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:36,840 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:36,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 104 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:36,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-02 15:47:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 181. [2023-12-02 15:47:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 138 states have (on average 1.391304347826087) internal successors, (192), 154 states have internal predecessors, (192), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:47:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 242 transitions. [2023-12-02 15:47:36,863 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 242 transitions. Word has length 52 [2023-12-02 15:47:36,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:36,863 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 242 transitions. [2023-12-02 15:47:36,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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) [2023-12-02 15:47:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 242 transitions. [2023-12-02 15:47:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 15:47:36,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:36,864 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:36,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:47:37,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 15:47:37,065 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)] === [2023-12-02 15:47:37,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2121081761, now seen corresponding path program 1 times [2023-12-02 15:47:37,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103750111] [2023-12-02 15:47:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:37,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:37,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:37,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218549672] [2023-12-02 15:47:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:37,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:37,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:37,075 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:37,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:47:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:37,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:37,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:47:37,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:37,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103750111] [2023-12-02 15:47:37,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218549672] [2023-12-02 15:47:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218549672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:37,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:37,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:47:37,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581891955] [2023-12-02 15:47:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:37,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:47:37,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:47:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:47:37,264 INFO L87 Difference]: Start difference. First operand 181 states and 242 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:37,416 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2023-12-02 15:47:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:47:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 53 [2023-12-02 15:47:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:37,418 INFO L225 Difference]: With dead ends: 192 [2023-12-02 15:47:37,418 INFO L226 Difference]: Without dead ends: 191 [2023-12-02 15:47:37,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:47:37,419 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 51 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:37,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 105 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:47:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-02 15:47:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2023-12-02 15:47:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 144 states have (on average 1.375) internal successors, (198), 160 states have internal predecessors, (198), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:47:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2023-12-02 15:47:37,465 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 53 [2023-12-02 15:47:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:37,466 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2023-12-02 15:47:37,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2023-12-02 15:47:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 15:47:37,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:37,467 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:37,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:47:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 15:47:37,668 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)] === [2023-12-02 15:47:37,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1329025034, now seen corresponding path program 1 times [2023-12-02 15:47:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:37,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819963523] [2023-12-02 15:47:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:37,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:37,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:37,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957448812] [2023-12-02 15:47:37,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:37,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:37,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:37,677 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:37,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:47:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:37,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:47:37,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:47:37,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:47:37,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:37,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819963523] [2023-12-02 15:47:37,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:37,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957448812] [2023-12-02 15:47:37,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957448812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:37,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:47:37,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:47:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688496914] [2023-12-02 15:47:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:47:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:47:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:37,808 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:37,872 INFO L93 Difference]: Finished difference Result 191 states and 252 transitions. [2023-12-02 15:47:37,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:47:37,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2023-12-02 15:47:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:37,874 INFO L225 Difference]: With dead ends: 191 [2023-12-02 15:47:37,874 INFO L226 Difference]: Without dead ends: 190 [2023-12-02 15:47:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:47:37,875 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:37,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 70 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:47:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-02 15:47:37,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2023-12-02 15:47:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 146 states have (on average 1.356164383561644) internal successors, (198), 162 states have internal predecessors, (198), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:47:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 248 transitions. [2023-12-02 15:47:37,909 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 248 transitions. Word has length 54 [2023-12-02 15:47:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:37,909 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 248 transitions. [2023-12-02 15:47:37,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 15:47:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 248 transitions. [2023-12-02 15:47:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 15:47:37,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:37,911 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:47:37,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 15:47:38,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:38,111 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)] === [2023-12-02 15:47:38,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1587768232, now seen corresponding path program 1 times [2023-12-02 15:47:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:38,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967232146] [2023-12-02 15:47:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:38,118 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:38,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594866891] [2023-12-02 15:47:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:38,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:38,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:38,120 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:38,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:47:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:47:38,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:47:38,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:47:38,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:47:39,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967232146] [2023-12-02 15:47:39,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594866891] [2023-12-02 15:47:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594866891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:47:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1192765565] [2023-12-02 15:47:39,270 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:47:39,270 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:47:39,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:47:39,271 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:47:39,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:47:42,075 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:47:42,076 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:47:50,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1192765565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:47:50,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:47:50,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 30 [2023-12-02 15:47:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794505362] [2023-12-02 15:47:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:47:50,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 15:47:50,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 15:47:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=954, Unknown=3, NotChecked=0, Total=1122 [2023-12-02 15:47:50,487 INFO L87 Difference]: Start difference. First operand 189 states and 248 transitions. Second operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:47:54,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:47:56,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:48:02,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:48:04,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:48:06,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:48:08,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:48:11,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:48:13,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:48:15,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:48:17,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:48:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:48:48,814 INFO L93 Difference]: Finished difference Result 227 states and 303 transitions. [2023-12-02 15:48:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-02 15:48:48,815 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2023-12-02 15:48:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:48:48,816 INFO L225 Difference]: With dead ends: 227 [2023-12-02 15:48:48,817 INFO L226 Difference]: Without dead ends: 217 [2023-12-02 15:48:48,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=677, Invalid=2728, Unknown=17, NotChecked=0, Total=3422 [2023-12-02 15:48:48,819 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 496 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 211 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:48:48,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 46 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 706 Invalid, 10 Unknown, 0 Unchecked, 22.8s Time] [2023-12-02 15:48:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-02 15:48:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 76. [2023-12-02 15:48:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 64 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 15:48:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2023-12-02 15:48:48,847 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 56 [2023-12-02 15:48:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:48:48,847 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2023-12-02 15:48:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:48:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2023-12-02 15:48:48,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 15:48:48,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:48:48,848 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:48:48,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 15:48:49,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:48:49,050 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:48:49,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:48:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash -728486179, now seen corresponding path program 1 times [2023-12-02 15:48:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:48:49,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841377776] [2023-12-02 15:48:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:49,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:48:49,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:48:49,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615405669] [2023-12-02 15:48:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:48:49,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:48:49,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:48:49,058 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:48:49,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:48:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:48:49,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:48:49,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:48:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 15:48:49,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:48:49,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:48:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841377776] [2023-12-02 15:48:49,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:48:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615405669] [2023-12-02 15:48:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615405669] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:48:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1090563955] [2023-12-02 15:48:49,813 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:48:49,813 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:48:49,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:48:49,813 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:48:49,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:48:55,163 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:48:55,165 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:49:35,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10252#(and (<= 2147483648 (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) 2147483647))' at error location [2023-12-02 15:49:35,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:49:35,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:49:35,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 15:49:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784274091] [2023-12-02 15:49:35,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:49:35,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:49:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:49:35,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:49:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1143, Unknown=11, NotChecked=0, Total=1406 [2023-12-02 15:49:35,689 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2023-12-02 15:49:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:49:36,058 INFO L93 Difference]: Finished difference Result 185 states and 215 transitions. [2023-12-02 15:49:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:49:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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 59 [2023-12-02 15:49:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:49:36,060 INFO L225 Difference]: With dead ends: 185 [2023-12-02 15:49:36,060 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 15:49:36,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=278, Invalid=1351, Unknown=11, NotChecked=0, Total=1640 [2023-12-02 15:49:36,061 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 113 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:49:36,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 150 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:49:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 15:49:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 134. [2023-12-02 15:49:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 105 states have (on average 1.180952380952381) internal successors, (124), 113 states have internal predecessors, (124), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:49:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2023-12-02 15:49:36,102 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 59 [2023-12-02 15:49:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:49:36,102 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2023-12-02 15:49:36,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2023-12-02 15:49:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2023-12-02 15:49:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 15:49:36,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:49:36,103 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:49:36,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:49:36,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:36,304 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:49:36,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:49:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1004980060, now seen corresponding path program 1 times [2023-12-02 15:49:36,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:49:36,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737962446] [2023-12-02 15:49:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:36,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:49:36,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:49:36,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044764339] [2023-12-02 15:49:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:36,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:36,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:49:36,313 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:49:36,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:49:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:36,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 15:49:36,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:49:36,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:38,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:49:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737962446] [2023-12-02 15:49:38,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:49:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044764339] [2023-12-02 15:49:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044764339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:49:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893745720] [2023-12-02 15:49:38,177 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 15:49:38,177 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:49:38,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:49:38,177 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:49:38,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:49:40,703 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:49:40,704 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:49:49,481 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10963#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~d~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~d~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~q~0#1| 2147483648)) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= (+ 2147483649 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0))' at error location [2023-12-02 15:49:49,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:49:49,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:49:49,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 15:49:49,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821722061] [2023-12-02 15:49:49,481 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:49:49,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:49:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:49:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:49:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1361, Unknown=2, NotChecked=0, Total=1560 [2023-12-02 15:49:49,483 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 15:49:50,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:49:50,055 INFO L93 Difference]: Finished difference Result 154 states and 182 transitions. [2023-12-02 15:49:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:49:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 69 [2023-12-02 15:49:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:49:50,059 INFO L225 Difference]: With dead ends: 154 [2023-12-02 15:49:50,059 INFO L226 Difference]: Without dead ends: 153 [2023-12-02 15:49:50,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=217, Invalid=1503, Unknown=2, NotChecked=0, Total=1722 [2023-12-02 15:49:50,060 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:49:50,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 135 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:49:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-02 15:49:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2023-12-02 15:49:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 113 states have internal predecessors, (123), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:49:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2023-12-02 15:49:50,087 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 69 [2023-12-02 15:49:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:49:50,087 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2023-12-02 15:49:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 15:49:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2023-12-02 15:49:50,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 15:49:50,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:49:50,088 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:49:50,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:49:50,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:50,289 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:49:50,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:49:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash -581799874, now seen corresponding path program 1 times [2023-12-02 15:49:50,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:49:50,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897588726] [2023-12-02 15:49:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:50,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:49:50,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:49:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141926702] [2023-12-02 15:49:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:50,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:49:50,299 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:49:50,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 15:49:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:50,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:49:50,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-02 15:49:50,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:49:50,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:49:50,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897588726] [2023-12-02 15:49:50,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:49:50,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141926702] [2023-12-02 15:49:50,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141926702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:49:50,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:49:50,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:49:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113232319] [2023-12-02 15:49:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:49:50,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:49:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:49:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:49:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:49:50,440 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:49:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:49:50,647 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2023-12-02 15:49:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:49:50,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2023-12-02 15:49:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:49:50,649 INFO L225 Difference]: With dead ends: 134 [2023-12-02 15:49:50,649 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 15:49:50,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:49:50,650 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:49:50,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 72 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:49:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 15:49:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2023-12-02 15:49:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 109 states have internal predecessors, (118), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:49:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2023-12-02 15:49:50,691 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 71 [2023-12-02 15:49:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:49:50,691 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2023-12-02 15:49:50,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:49:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2023-12-02 15:49:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 15:49:50,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:49:50,693 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:49:50,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 15:49:50,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 15:49:50,898 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:49:50,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:49:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1955392280, now seen corresponding path program 1 times [2023-12-02 15:49:50,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:49:50,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650912255] [2023-12-02 15:49:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:49:50,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:49:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908054593] [2023-12-02 15:49:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:49:50,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:49:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:49:50,908 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:49:50,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:49:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:49:50,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:49:50,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:49:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:49:51,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:49:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:49:52,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:49:52,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650912255] [2023-12-02 15:49:52,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:49:52,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908054593] [2023-12-02 15:49:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908054593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:49:52,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119679251] [2023-12-02 15:49:52,955 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:49:52,955 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:49:52,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:49:52,956 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:49:52,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:49:55,298 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:49:55,300 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:50:02,200 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12338#(and (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~d~0#1| 2147483648) |ULTIMATE.start_main_~r~0#1|) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2023-12-02 15:50:02,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:50:02,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:50:02,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 15:50:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461575676] [2023-12-02 15:50:02,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:50:02,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:50:02,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:02,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:50:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1035, Unknown=2, NotChecked=0, Total=1190 [2023-12-02 15:50:02,202 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-02 15:50:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:03,195 INFO L93 Difference]: Finished difference Result 295 states and 343 transitions. [2023-12-02 15:50:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:50:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 75 [2023-12-02 15:50:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:03,198 INFO L225 Difference]: With dead ends: 295 [2023-12-02 15:50:03,198 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 15:50:03,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 183 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=185, Invalid=1219, Unknown=2, NotChecked=0, Total=1406 [2023-12-02 15:50:03,199 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 179 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:03,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 260 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:50:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 15:50:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 223. [2023-12-02 15:50:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 192 states have internal predecessors, (213), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 15:50:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 271 transitions. [2023-12-02 15:50:03,253 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 271 transitions. Word has length 75 [2023-12-02 15:50:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:03,253 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 271 transitions. [2023-12-02 15:50:03,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-02 15:50:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 271 transitions. [2023-12-02 15:50:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 15:50:03,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:03,254 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 15:50:03,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:50:03,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 15:50:03,454 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:50:03,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash 963824810, now seen corresponding path program 2 times [2023-12-02 15:50:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967790311] [2023-12-02 15:50:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:03,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:50:03,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042661945] [2023-12-02 15:50:03,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:50:03,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:50:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:50:03,463 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:50:03,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:50:03,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:50:03,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:50:03,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 15:50:03,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-02 15:50:04,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:50:12,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967790311] [2023-12-02 15:50:12,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:50:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042661945] [2023-12-02 15:50:12,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042661945] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:50:12,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1970539347] [2023-12-02 15:50:12,322 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:50:12,322 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:50:12,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:50:12,322 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:50:12,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:50:14,620 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:50:14,621 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:50:23,995 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13274#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2023-12-02 15:50:23,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:50:23,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:50:23,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 15:50:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037097087] [2023-12-02 15:50:23,995 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:50:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:50:23,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:23,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:50:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1426, Unknown=3, NotChecked=0, Total=1640 [2023-12-02 15:50:23,997 INFO L87 Difference]: Start difference. First operand 223 states and 271 transitions. Second operand has 10 states, 8 states have (on average 5.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:50:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:24,623 INFO L93 Difference]: Finished difference Result 254 states and 305 transitions. [2023-12-02 15:50:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:50:24,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2023-12-02 15:50:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:24,625 INFO L225 Difference]: With dead ends: 254 [2023-12-02 15:50:24,625 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 15:50:24,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=211, Invalid=1426, Unknown=3, NotChecked=0, Total=1640 [2023-12-02 15:50:24,627 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 67 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:24,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 95 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:50:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 15:50:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 227. [2023-12-02 15:50:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 189 states have (on average 1.1481481481481481) internal successors, (217), 196 states have internal predecessors, (217), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 15:50:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 275 transitions. [2023-12-02 15:50:24,694 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 275 transitions. Word has length 76 [2023-12-02 15:50:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:24,694 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 275 transitions. [2023-12-02 15:50:24,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:50:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 275 transitions. [2023-12-02 15:50:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 15:50:24,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:24,696 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:24,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 15:50:24,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 15:50:24,896 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:50:24,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash -487618421, now seen corresponding path program 1 times [2023-12-02 15:50:24,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:24,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868299755] [2023-12-02 15:50:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:24,905 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:50:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081524001] [2023-12-02 15:50:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:24,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:50:24,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:50:24,907 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:50:24,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 15:50:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:24,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:50:24,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:50:25,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:50:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:50:28,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868299755] [2023-12-02 15:50:28,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:50:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081524001] [2023-12-02 15:50:28,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081524001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:50:28,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [643583139] [2023-12-02 15:50:28,478 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:50:28,478 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:50:28,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:50:28,478 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:50:28,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:50:30,798 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:50:30,800 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:50:39,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14338#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= (+ 2147483649 |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) 0) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-12-02 15:50:39,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:50:39,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:50:39,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2023-12-02 15:50:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422456373] [2023-12-02 15:50:39,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:50:39,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:50:39,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:50:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1149, Unknown=2, NotChecked=0, Total=1332 [2023-12-02 15:50:39,671 INFO L87 Difference]: Start difference. First operand 227 states and 275 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-02 15:50:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:39,906 INFO L93 Difference]: Finished difference Result 227 states and 275 transitions. [2023-12-02 15:50:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:50:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 76 [2023-12-02 15:50:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:39,907 INFO L225 Difference]: With dead ends: 227 [2023-12-02 15:50:39,907 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 15:50:39,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 185 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=193, Invalid=1211, Unknown=2, NotChecked=0, Total=1406 [2023-12-02 15:50:39,909 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 81 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:50:39,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 125 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:50:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 15:50:39,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-12-02 15:50:39,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 189 states have (on average 1.1375661375661377) internal successors, (215), 195 states have internal predecessors, (215), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 15:50:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 273 transitions. [2023-12-02 15:50:39,952 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 273 transitions. Word has length 76 [2023-12-02 15:50:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:39,952 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 273 transitions. [2023-12-02 15:50:39,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-02 15:50:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 273 transitions. [2023-12-02 15:50:39,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 15:50:39,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:39,953 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:39,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 15:50:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 15:50:40,154 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:50:40,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2071948372, now seen corresponding path program 1 times [2023-12-02 15:50:40,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:40,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040708550] [2023-12-02 15:50:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:40,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:50:40,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467199685] [2023-12-02 15:50:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:40,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:50:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:50:40,161 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:50:40,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 15:50:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:40,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:50:40,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-02 15:50:40,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:50:40,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040708550] [2023-12-02 15:50:40,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:50:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467199685] [2023-12-02 15:50:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467199685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:50:40,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:50:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:50:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235262039] [2023-12-02 15:50:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:50:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:50:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:50:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:50:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:50:40,254 INFO L87 Difference]: Start difference. First operand 226 states and 273 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:50:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:50:40,345 INFO L93 Difference]: Finished difference Result 226 states and 273 transitions. [2023-12-02 15:50:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:50:40,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2023-12-02 15:50:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:50:40,348 INFO L225 Difference]: With dead ends: 226 [2023-12-02 15:50:40,348 INFO L226 Difference]: Without dead ends: 225 [2023-12-02 15:50:40,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:50:40,349 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 31 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 [2023-12-02 15:50:40,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 31 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:50:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-02 15:50:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 213. [2023-12-02 15:50:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 177 states have (on average 1.1299435028248588) internal successors, (200), 182 states have internal predecessors, (200), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-02 15:50:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 258 transitions. [2023-12-02 15:50:40,397 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 258 transitions. Word has length 77 [2023-12-02 15:50:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:50:40,398 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 258 transitions. [2023-12-02 15:50:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:50:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 258 transitions. [2023-12-02 15:50:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 15:50:40,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:50:40,399 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:50:40,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 15:50:40,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 15:50:40,599 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:50:40,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:50:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2063698250, now seen corresponding path program 1 times [2023-12-02 15:50:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:50:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528271707] [2023-12-02 15:50:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:40,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:50:40,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:50:40,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30640418] [2023-12-02 15:50:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:50:40,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:50:40,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:50:40,608 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:50:40,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 15:50:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:50:40,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 15:50:40,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:50:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:50:40,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:50:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:50:43,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:50:43,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528271707] [2023-12-02 15:50:43,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:50:43,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30640418] [2023-12-02 15:50:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30640418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:50:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [820900854] [2023-12-02 15:50:43,043 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:50:43,044 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:50:43,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:50:43,044 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:50:43,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:50:45,432 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:50:45,433 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:51:12,087 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16137#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 2147483648 (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-12-02 15:51:12,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:51:12,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:51:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 15:51:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294853797] [2023-12-02 15:51:12,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:51:12,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:51:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:51:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1136, Unknown=8, NotChecked=0, Total=1406 [2023-12-02 15:51:12,089 INFO L87 Difference]: Start difference. First operand 213 states and 258 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 12 states have internal predecessors, (95), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-02 15:51:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:13,312 INFO L93 Difference]: Finished difference Result 469 states and 560 transitions. [2023-12-02 15:51:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:51:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 12 states have internal predecessors, (95), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 77 [2023-12-02 15:51:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:13,315 INFO L225 Difference]: With dead ends: 469 [2023-12-02 15:51:13,315 INFO L226 Difference]: Without dead ends: 368 [2023-12-02 15:51:13,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 187 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=311, Invalid=1403, Unknown=8, NotChecked=0, Total=1722 [2023-12-02 15:51:13,316 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 210 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:13,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 277 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:51:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-02 15:51:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 297. [2023-12-02 15:51:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 249 states have (on average 1.1204819277108433) internal successors, (279), 254 states have internal predecessors, (279), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-02 15:51:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 361 transitions. [2023-12-02 15:51:13,378 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 361 transitions. Word has length 77 [2023-12-02 15:51:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:13,378 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 361 transitions. [2023-12-02 15:51:13,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 12 states have internal predecessors, (95), 6 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-12-02 15:51:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 361 transitions. [2023-12-02 15:51:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 15:51:13,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:13,379 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:51:13,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 15:51:13,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:13,580 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:51:13,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:13,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2007889399, now seen corresponding path program 3 times [2023-12-02 15:51:13,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:13,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811907953] [2023-12-02 15:51:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:13,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:13,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:51:13,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2109475718] [2023-12-02 15:51:13,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:51:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:51:13,591 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:51:13,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 15:51:13,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:51:13,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:51:13,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:51:13,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:51:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:51:13,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:51:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:51:13,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811907953] [2023-12-02 15:51:13,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:51:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109475718] [2023-12-02 15:51:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109475718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:51:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [86175822] [2023-12-02 15:51:13,889 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:51:13,889 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:51:13,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:51:13,889 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:51:13,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:51:15,736 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:51:15,797 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:51:16,325 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:51:16,327 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:51:23,003 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17576#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2023-12-02 15:51:23,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:51:23,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:51:23,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-12-02 15:51:23,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699429707] [2023-12-02 15:51:23,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:51:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:51:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:51:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=752, Unknown=2, NotChecked=0, Total=870 [2023-12-02 15:51:23,005 INFO L87 Difference]: Start difference. First operand 297 states and 361 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-02 15:51:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:23,148 INFO L93 Difference]: Finished difference Result 310 states and 374 transitions. [2023-12-02 15:51:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:51:23,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 82 [2023-12-02 15:51:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:23,150 INFO L225 Difference]: With dead ends: 310 [2023-12-02 15:51:23,150 INFO L226 Difference]: Without dead ends: 244 [2023-12-02 15:51:23,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 208 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=116, Invalid=752, Unknown=2, NotChecked=0, Total=870 [2023-12-02 15:51:23,151 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:23,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 117 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:51:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-02 15:51:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-12-02 15:51:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 202 states have (on average 1.1287128712871286) internal successors, (228), 207 states have internal predecessors, (228), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-02 15:51:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 298 transitions. [2023-12-02 15:51:23,215 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 298 transitions. Word has length 82 [2023-12-02 15:51:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:23,215 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 298 transitions. [2023-12-02 15:51:23,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-02 15:51:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 298 transitions. [2023-12-02 15:51:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:51:23,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:23,216 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:51:23,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 15:51:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 15:51:23,417 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:51:23,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash 537413865, now seen corresponding path program 2 times [2023-12-02 15:51:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248294381] [2023-12-02 15:51:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:23,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:51:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1683917684] [2023-12-02 15:51:23,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:51:23,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:23,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:51:23,427 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:51:23,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 15:51:23,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:51:23,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:51:23,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:51:23,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:51:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 15:51:23,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:51:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 15:51:23,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:23,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248294381] [2023-12-02 15:51:23,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:51:23,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683917684] [2023-12-02 15:51:23,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683917684] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:51:23,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [787906667] [2023-12-02 15:51:23,842 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 15:51:23,842 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:51:23,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:51:23,843 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:51:23,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:51:25,769 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:51:25,841 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:51:26,427 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:51:26,429 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:51:33,236 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18785#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~d~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~d~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~q~0#1| 2147483648)) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= (+ 2147483649 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0))' at error location [2023-12-02 15:51:33,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:51:33,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:51:33,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-02 15:51:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361420220] [2023-12-02 15:51:33,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:51:33,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:51:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:51:33,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=804, Unknown=2, NotChecked=0, Total=930 [2023-12-02 15:51:33,238 INFO L87 Difference]: Start difference. First operand 244 states and 298 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-02 15:51:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:33,404 INFO L93 Difference]: Finished difference Result 261 states and 317 transitions. [2023-12-02 15:51:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:51:33,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 86 [2023-12-02 15:51:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:33,406 INFO L225 Difference]: With dead ends: 261 [2023-12-02 15:51:33,406 INFO L226 Difference]: Without dead ends: 254 [2023-12-02 15:51:33,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=124, Invalid=804, Unknown=2, NotChecked=0, Total=930 [2023-12-02 15:51:33,407 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:33,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 113 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:51:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-02 15:51:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-12-02 15:51:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 210 states have (on average 1.119047619047619) internal successors, (235), 215 states have internal predecessors, (235), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-02 15:51:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 309 transitions. [2023-12-02 15:51:33,466 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 309 transitions. Word has length 86 [2023-12-02 15:51:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:33,466 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 309 transitions. [2023-12-02 15:51:33,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-02 15:51:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 309 transitions. [2023-12-02 15:51:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-02 15:51:33,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:33,467 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:51:33,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 15:51:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:33,667 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:51:33,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1306111842, now seen corresponding path program 1 times [2023-12-02 15:51:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:33,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577018800] [2023-12-02 15:51:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:33,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:33,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:51:33,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606604283] [2023-12-02 15:51:33,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:33,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:51:33,677 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:51:33,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 15:51:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:33,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:51:33,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:51:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-02 15:51:34,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:51:34,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577018800] [2023-12-02 15:51:34,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:51:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606604283] [2023-12-02 15:51:34,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606604283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:51:34,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:51:34,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 15:51:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042141648] [2023-12-02 15:51:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:51:34,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:51:34,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:51:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:51:34,020 INFO L87 Difference]: Start difference. First operand 254 states and 309 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 15:51:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:34,248 INFO L93 Difference]: Finished difference Result 307 states and 364 transitions. [2023-12-02 15:51:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:51:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 95 [2023-12-02 15:51:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:34,250 INFO L225 Difference]: With dead ends: 307 [2023-12-02 15:51:34,250 INFO L226 Difference]: Without dead ends: 206 [2023-12-02 15:51:34,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:51:34,250 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 50 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:34,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 159 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:51:34,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-02 15:51:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 164. [2023-12-02 15:51:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 131 states have (on average 1.0916030534351144) internal successors, (143), 135 states have internal predecessors, (143), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:51:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 197 transitions. [2023-12-02 15:51:34,290 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 197 transitions. Word has length 95 [2023-12-02 15:51:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:34,290 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 197 transitions. [2023-12-02 15:51:34,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 15:51:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 197 transitions. [2023-12-02 15:51:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 15:51:34,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:34,291 INFO L195 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 15:51:34,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-02 15:51:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 15:51:34,492 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:51:34,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1267873180, now seen corresponding path program 4 times [2023-12-02 15:51:34,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:34,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685291436] [2023-12-02 15:51:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:34,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:51:34,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380642685] [2023-12-02 15:51:34,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:51:34,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:34,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:51:34,501 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:51:34,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 15:51:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:34,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 15:51:34,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:51:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 15:51:35,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:51:35,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:35,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685291436] [2023-12-02 15:51:35,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:51:35,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380642685] [2023-12-02 15:51:35,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380642685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:51:35,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1727908016] [2023-12-02 15:51:35,590 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:51:35,590 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:51:35,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:51:35,590 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:51:35,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:51:37,908 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:51:37,910 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:51:45,625 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20656#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2023-12-02 15:51:45,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:51:45,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:51:45,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 15:51:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449564928] [2023-12-02 15:51:45,625 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:51:45,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:51:45,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:51:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1639, Unknown=2, NotChecked=0, Total=1806 [2023-12-02 15:51:45,627 INFO L87 Difference]: Start difference. First operand 164 states and 197 transitions. Second operand has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 14 states have internal predecessors, (61), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 15:51:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:51:46,690 INFO L93 Difference]: Finished difference Result 265 states and 311 transitions. [2023-12-02 15:51:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:51:46,691 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 14 states have internal predecessors, (61), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 99 [2023-12-02 15:51:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:51:46,693 INFO L225 Difference]: With dead ends: 265 [2023-12-02 15:51:46,693 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 15:51:46,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=194, Invalid=1874, Unknown=2, NotChecked=0, Total=2070 [2023-12-02 15:51:46,694 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 98 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:51:46,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 259 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:51:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 15:51:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 202. [2023-12-02 15:51:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 165 states have (on average 1.0787878787878789) internal successors, (178), 169 states have internal predecessors, (178), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-02 15:51:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2023-12-02 15:51:46,749 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 99 [2023-12-02 15:51:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:51:46,750 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2023-12-02 15:51:46,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 14 states have internal predecessors, (61), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 15:51:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2023-12-02 15:51:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 15:51:46,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:51:46,751 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:51:46,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-02 15:51:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 15:51:46,951 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:51:46,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:51:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1894395691, now seen corresponding path program 1 times [2023-12-02 15:51:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:51:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220068337] [2023-12-02 15:51:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:51:46,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:51:46,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204780171] [2023-12-02 15:51:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:51:46,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:51:46,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:51:46,963 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:51:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 15:51:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:51:47,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 15:51:47,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:51:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 15:51:47,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:51:47,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:51:47,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220068337] [2023-12-02 15:51:47,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:51:47,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204780171] [2023-12-02 15:51:47,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204780171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:51:47,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [905682161] [2023-12-02 15:51:47,842 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-12-02 15:51:47,842 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:51:47,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:51:47,842 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:51:47,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:51:53,220 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:51:53,222 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:51:59,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21646#(and (= |ULTIMATE.start_main_~p~0#1| 1) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~q~0#1| 2147483648)) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= (+ 2147483649 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|)) 0) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-12-02 15:51:59,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:51:59,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:51:59,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 15:51:59,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622606828] [2023-12-02 15:51:59,871 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:51:59,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:51:59,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:51:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:51:59,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 15:51:59,872 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 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) [2023-12-02 15:52:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:00,671 INFO L93 Difference]: Finished difference Result 226 states and 267 transitions. [2023-12-02 15:52:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 15:52:00,672 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 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 105 [2023-12-02 15:52:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:00,673 INFO L225 Difference]: With dead ends: 226 [2023-12-02 15:52:00,674 INFO L226 Difference]: Without dead ends: 225 [2023-12-02 15:52:00,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 187 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 15:52:00,675 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 49 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:00,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 204 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:52:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-02 15:52:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 218. [2023-12-02 15:52:00,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 183 states have internal predecessors, (194), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-02 15:52:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 260 transitions. [2023-12-02 15:52:00,724 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 260 transitions. Word has length 105 [2023-12-02 15:52:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:00,725 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 260 transitions. [2023-12-02 15:52:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 13 states have internal predecessors, (61), 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) [2023-12-02 15:52:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 260 transitions. [2023-12-02 15:52:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 15:52:00,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:00,726 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:52:00,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 15:52:00,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-02 15:52:00,926 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:52:00,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:00,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1403275850, now seen corresponding path program 1 times [2023-12-02 15:52:00,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:00,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468259144] [2023-12-02 15:52:00,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:00,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:00,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:52:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310623475] [2023-12-02 15:52:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:00,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:52:00,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:52:00,936 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:52:00,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 15:52:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:01,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 15:52:01,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:52:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 14 proven. 51 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-12-02 15:52:01,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:52:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-02 15:52:03,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468259144] [2023-12-02 15:52:03,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:52:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310623475] [2023-12-02 15:52:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310623475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:52:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107595547] [2023-12-02 15:52:03,926 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 15:52:03,926 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:52:03,926 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:52:03,926 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:52:03,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:52:09,410 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:52:09,411 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:52:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [107595547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:52:14,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:52:14,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [10, 9] total 43 [2023-12-02 15:52:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090527842] [2023-12-02 15:52:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:52:14,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 15:52:14,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 15:52:14,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1522, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 15:52:14,837 INFO L87 Difference]: Start difference. First operand 218 states and 260 transitions. Second operand has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:52:18,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:18,346 INFO L93 Difference]: Finished difference Result 235 states and 279 transitions. [2023-12-02 15:52:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-02 15:52:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 106 [2023-12-02 15:52:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:18,347 INFO L225 Difference]: With dead ends: 235 [2023-12-02 15:52:18,347 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 15:52:18,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 270 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=734, Invalid=2458, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 15:52:18,349 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 236 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:18,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 58 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 15:52:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 15:52:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 171. [2023-12-02 15:52:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 141 states have (on average 1.0567375886524824) internal successors, (149), 142 states have internal predecessors, (149), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:52:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 203 transitions. [2023-12-02 15:52:18,395 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 203 transitions. Word has length 106 [2023-12-02 15:52:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:18,395 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 203 transitions. [2023-12-02 15:52:18,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 15:52:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 203 transitions. [2023-12-02 15:52:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 15:52:18,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:18,396 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 15:52:18,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 15:52:18,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 15:52:18,597 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:52:18,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:18,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1418720829, now seen corresponding path program 1 times [2023-12-02 15:52:18,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:18,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896704516] [2023-12-02 15:52:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:18,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:18,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:52:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263224741] [2023-12-02 15:52:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:52:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:52:18,606 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:52:18,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 15:52:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:52:18,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 15:52:18,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:52:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 15:52:19,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:52:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 15:52:25,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896704516] [2023-12-02 15:52:25,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:52:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263224741] [2023-12-02 15:52:25,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263224741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:52:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237381196] [2023-12-02 15:52:25,006 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:52:25,006 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:52:25,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:52:25,007 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:52:25,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:52:29,367 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:52:29,368 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:52:34,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24107#(and (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= 2147483648 (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)))' at error location [2023-12-02 15:52:34,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:52:34,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:52:34,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-02 15:52:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020410551] [2023-12-02 15:52:34,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:52:34,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:52:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:52:34,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:52:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 15:52:34,147 INFO L87 Difference]: Start difference. First operand 171 states and 203 transitions. Second operand has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 18 states have internal predecessors, (137), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-02 15:52:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:52:36,984 INFO L93 Difference]: Finished difference Result 474 states and 558 transitions. [2023-12-02 15:52:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 15:52:36,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 18 states have internal predecessors, (137), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 113 [2023-12-02 15:52:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:52:36,987 INFO L225 Difference]: With dead ends: 474 [2023-12-02 15:52:36,987 INFO L226 Difference]: Without dead ends: 473 [2023-12-02 15:52:36,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 285 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=516, Invalid=2240, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 15:52:36,989 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 503 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:52:36,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 454 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 15:52:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-02 15:52:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 333. [2023-12-02 15:52:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 283 states have (on average 1.0671378091872792) internal successors, (302), 284 states have internal predecessors, (302), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-12-02 15:52:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 396 transitions. [2023-12-02 15:52:37,099 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 396 transitions. Word has length 113 [2023-12-02 15:52:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:52:37,100 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 396 transitions. [2023-12-02 15:52:37,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 18 states have internal predecessors, (137), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-02 15:52:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 396 transitions. [2023-12-02 15:52:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 15:52:37,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:52:37,102 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 15:52:37,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 15:52:37,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 15:52:37,307 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:52:37,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:52:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash -787332503, now seen corresponding path program 5 times [2023-12-02 15:52:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:52:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327216433] [2023-12-02 15:52:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:52:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:52:37,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:52:37,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137414857] [2023-12-02 15:52:37,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:52:37,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:52:37,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:52:37,319 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:52:37,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 15:52:37,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:52:37,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:52:37,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 15:52:37,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:52:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 60 proven. 29 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-12-02 15:52:39,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:52:46,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:52:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327216433] [2023-12-02 15:52:46,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:52:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137414857] [2023-12-02 15:52:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137414857] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:52:46,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [16765310] [2023-12-02 15:52:46,414 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:52:46,414 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:52:46,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:52:46,414 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:52:46,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:52:51,296 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:52:51,297 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:53:40,256 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25544#(and (<= 2147483648 (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) 2147483647))' at error location [2023-12-02 15:53:40,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:53:40,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:53:40,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 15:53:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434101277] [2023-12-02 15:53:40,257 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:53:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 15:53:40,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:53:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 15:53:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1986, Unknown=13, NotChecked=0, Total=2352 [2023-12-02 15:53:40,259 INFO L87 Difference]: Start difference. First operand 333 states and 396 transitions. Second operand has 16 states, 14 states have (on average 4.642857142857143) internal successors, (65), 16 states have internal predecessors, (65), 4 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 15:53:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:53:41,984 INFO L93 Difference]: Finished difference Result 448 states and 531 transitions. [2023-12-02 15:53:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 15:53:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.642857142857143) internal successors, (65), 16 states have internal predecessors, (65), 4 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2023-12-02 15:53:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:53:41,986 INFO L225 Difference]: With dead ends: 448 [2023-12-02 15:53:41,986 INFO L226 Difference]: Without dead ends: 447 [2023-12-02 15:53:41,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 196 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=360, Invalid=2077, Unknown=13, NotChecked=0, Total=2450 [2023-12-02 15:53:41,988 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:53:41,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 211 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 15:53:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-02 15:53:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 376. [2023-12-02 15:53:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 320 states have (on average 1.071875) internal successors, (343), 321 states have internal predecessors, (343), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-12-02 15:53:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 449 transitions. [2023-12-02 15:53:42,104 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 449 transitions. Word has length 116 [2023-12-02 15:53:42,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:53:42,105 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 449 transitions. [2023-12-02 15:53:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.642857142857143) internal successors, (65), 16 states have internal predecessors, (65), 4 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 15:53:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 449 transitions. [2023-12-02 15:53:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-02 15:53:42,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:53:42,106 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:53:42,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 15:53:42,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:53:42,307 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:53:42,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:53:42,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1485968080, now seen corresponding path program 2 times [2023-12-02 15:53:42,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:53:42,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374557162] [2023-12-02 15:53:42,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:53:42,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:53:42,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:53:42,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830514041] [2023-12-02 15:53:42,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:53:42,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:53:42,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:53:42,315 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:53:42,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 15:53:42,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:53:42,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:53:42,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 15:53:42,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:53:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 39 proven. 37 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-12-02 15:53:43,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:53:48,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:53:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374557162] [2023-12-02 15:53:48,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:53:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830514041] [2023-12-02 15:53:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830514041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:53:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436207886] [2023-12-02 15:53:48,858 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:53:48,858 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:53:48,858 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:53:48,858 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:53:48,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:53:50,877 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:53:50,951 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:53:54,446 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:53:54,447 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:54:02,927 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26991#(and (<= 2147483648 (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) 2147483647))' at error location [2023-12-02 15:54:02,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:54:02,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:54:02,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-02 15:54:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933853941] [2023-12-02 15:54:02,928 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:54:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 15:54:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:54:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 15:54:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1865, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 15:54:02,930 INFO L87 Difference]: Start difference. First operand 376 states and 449 transitions. Second operand has 15 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 15:54:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:54:05,139 INFO L93 Difference]: Finished difference Result 563 states and 670 transitions. [2023-12-02 15:54:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:54:05,139 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 118 [2023-12-02 15:54:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:54:05,142 INFO L225 Difference]: With dead ends: 563 [2023-12-02 15:54:05,142 INFO L226 Difference]: Without dead ends: 562 [2023-12-02 15:54:05,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 199 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=896, Invalid=3934, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 15:54:05,144 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:54:05,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 118 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:54:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-12-02 15:54:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 404. [2023-12-02 15:54:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 346 states have (on average 1.0664739884393064) internal successors, (369), 347 states have internal predecessors, (369), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-02 15:54:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 479 transitions. [2023-12-02 15:54:05,267 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 479 transitions. Word has length 118 [2023-12-02 15:54:05,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:54:05,268 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 479 transitions. [2023-12-02 15:54:05,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 15:54:05,268 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 479 transitions. [2023-12-02 15:54:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 15:54:05,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:54:05,269 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2023-12-02 15:54:05,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 15:54:05,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:05,469 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:54:05,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:54:05,470 INFO L85 PathProgramCache]: Analyzing trace with hash 571923562, now seen corresponding path program 6 times [2023-12-02 15:54:05,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:54:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696198239] [2023-12-02 15:54:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:05,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:54:05,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:54:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634427109] [2023-12-02 15:54:05,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:54:05,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:05,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:54:05,480 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:54:05,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 15:54:05,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:54:05,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:54:05,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 15:54:05,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:54:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 15:54:06,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:54:06,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:54:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696198239] [2023-12-02 15:54:06,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:54:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634427109] [2023-12-02 15:54:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634427109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:54:06,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [496851575] [2023-12-02 15:54:06,887 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:54:06,887 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:54:06,888 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:54:06,888 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:54:06,888 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:54:08,790 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:54:08,850 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-12-02 15:54:09,383 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:54:09,384 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:54:17,696 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28656#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2023-12-02 15:54:17,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:54:17,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:54:17,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 15:54:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765156185] [2023-12-02 15:54:17,697 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:54:17,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 15:54:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:54:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 15:54:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1799, Unknown=2, NotChecked=0, Total=1980 [2023-12-02 15:54:17,698 INFO L87 Difference]: Start difference. First operand 404 states and 479 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 15:54:18,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:54:18,779 INFO L93 Difference]: Finished difference Result 514 states and 607 transitions. [2023-12-02 15:54:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 15:54:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 122 [2023-12-02 15:54:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:54:18,783 INFO L225 Difference]: With dead ends: 514 [2023-12-02 15:54:18,783 INFO L226 Difference]: Without dead ends: 513 [2023-12-02 15:54:18,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 205 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=200, Invalid=1960, Unknown=2, NotChecked=0, Total=2162 [2023-12-02 15:54:18,785 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 56 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:54:18,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 287 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:54:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-02 15:54:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 463. [2023-12-02 15:54:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 397 states have (on average 1.0680100755667505) internal successors, (424), 398 states have internal predecessors, (424), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-12-02 15:54:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 550 transitions. [2023-12-02 15:54:18,944 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 550 transitions. Word has length 122 [2023-12-02 15:54:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:54:18,944 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 550 transitions. [2023-12-02 15:54:18,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 16 states have internal predecessors, (78), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 15:54:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 550 transitions. [2023-12-02 15:54:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 15:54:18,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:54:18,945 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2023-12-02 15:54:18,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 15:54:19,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:19,146 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:54:19,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:54:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1301392938, now seen corresponding path program 2 times [2023-12-02 15:54:19,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:54:19,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832773785] [2023-12-02 15:54:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:54:19,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:54:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319999690] [2023-12-02 15:54:19,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:54:19,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:19,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:54:19,154 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:54:19,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 15:54:19,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 15:54:19,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:54:19,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 15:54:19,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:54:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 33 proven. 27 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2023-12-02 15:54:20,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:54:21,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:54:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832773785] [2023-12-02 15:54:21,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:54:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319999690] [2023-12-02 15:54:21,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319999690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:54:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793296540] [2023-12-02 15:54:21,397 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:54:21,397 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:54:21,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:54:21,397 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:54:21,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:54:23,730 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:54:23,732 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:54:48,651 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30376#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= 2147483648 (+ |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= 0 |ULTIMATE.start_main_~A~0#1|) (<= 0 (+ |ULTIMATE.start_main_~r~0#1| 2147483648)))' at error location [2023-12-02 15:54:48,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:54:48,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:54:48,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 15:54:48,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105531420] [2023-12-02 15:54:48,652 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:54:48,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:54:48,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:54:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:54:48,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1437, Unknown=8, NotChecked=0, Total=1806 [2023-12-02 15:54:48,653 INFO L87 Difference]: Start difference. First operand 463 states and 550 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 15:54:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:54:49,213 INFO L93 Difference]: Finished difference Result 491 states and 582 transitions. [2023-12-02 15:54:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:54:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 134 [2023-12-02 15:54:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:54:49,216 INFO L225 Difference]: With dead ends: 491 [2023-12-02 15:54:49,216 INFO L226 Difference]: Without dead ends: 351 [2023-12-02 15:54:49,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 251 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=425, Invalid=1729, Unknown=8, NotChecked=0, Total=2162 [2023-12-02 15:54:49,217 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:54:49,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 50 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:54:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-02 15:54:49,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 140. [2023-12-02 15:54:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 15:54:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2023-12-02 15:54:49,272 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 134 [2023-12-02 15:54:49,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:54:49,272 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2023-12-02 15:54:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 15:54:49,273 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2023-12-02 15:54:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 15:54:49,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:54:49,273 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2023-12-02 15:54:49,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 15:54:49,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 15:54:49,474 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:54:49,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:54:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1284028669, now seen corresponding path program 7 times [2023-12-02 15:54:49,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:54:49,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817915305] [2023-12-02 15:54:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:54:49,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:54:49,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134018306] [2023-12-02 15:54:49,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:54:49,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:49,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:54:49,483 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:54:49,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 15:54:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:54:49,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 15:54:49,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:54:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 112 proven. 69 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-12-02 15:54:50,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:54:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 48 proven. 69 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-02 15:54:51,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:54:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817915305] [2023-12-02 15:54:51,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:54:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134018306] [2023-12-02 15:54:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134018306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:54:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2116596991] [2023-12-02 15:54:51,817 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:54:51,817 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:54:51,817 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:54:51,817 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:54:51,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:54:54,100 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:54:54,101 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:55:02,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32022#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 5) (= |ULTIMATE.start_main_~B~0#1| 1) (<= |ULTIMATE.start_main_~q~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~A~0#1|))' at error location [2023-12-02 15:55:02,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:55:02,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:55:02,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 20 [2023-12-02 15:55:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997415965] [2023-12-02 15:55:02,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:55:02,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:55:02,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:55:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:55:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1785, Unknown=2, NotChecked=0, Total=1980 [2023-12-02 15:55:02,322 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 11 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-02 15:55:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:03,589 INFO L93 Difference]: Finished difference Result 274 states and 320 transitions. [2023-12-02 15:55:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:55:03,590 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 11 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) Word has length 139 [2023-12-02 15:55:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:03,591 INFO L225 Difference]: With dead ends: 274 [2023-12-02 15:55:03,591 INFO L226 Difference]: Without dead ends: 198 [2023-12-02 15:55:03,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 359 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=230, Invalid=2024, Unknown=2, NotChecked=0, Total=2256 [2023-12-02 15:55:03,592 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 98 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:03,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 445 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:55:03,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-02 15:55:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 121. [2023-12-02 15:55:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 states have internal predecessors, (103), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:55:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2023-12-02 15:55:03,646 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 139 [2023-12-02 15:55:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:03,646 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2023-12-02 15:55:03,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 11 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 11 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-02 15:55:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2023-12-02 15:55:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 15:55:03,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:03,647 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-12-02 15:55:03,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 15:55:03,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 15:55:03,848 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:55:03,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:03,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1843650134, now seen corresponding path program 3 times [2023-12-02 15:55:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:55:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437834292] [2023-12-02 15:55:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:03,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:55:03,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:55:03,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936154842] [2023-12-02 15:55:03,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:55:03,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:55:03,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:55:03,857 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:55:03,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 15:55:03,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:55:03,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:55:03,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 15:55:03,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 133 proven. 60 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-02 15:55:04,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:55:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 73 proven. 60 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-12-02 15:55:07,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:55:07,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437834292] [2023-12-02 15:55:07,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:55:07,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936154842] [2023-12-02 15:55:07,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936154842] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:55:07,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1171043300] [2023-12-02 15:55:07,211 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:55:07,211 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:55:07,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:55:07,211 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:55:07,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:55:12,864 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:55:12,865 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:55:21,706 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33401#(and (<= 2147483648 (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) 2147483647))' at error location [2023-12-02 15:55:21,706 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:55:21,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:55:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2023-12-02 15:55:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744539418] [2023-12-02 15:55:21,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:55:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 15:55:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:55:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 15:55:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2026, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 15:55:21,709 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 10 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-02 15:55:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:23,159 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2023-12-02 15:55:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:55:23,160 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 10 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) Word has length 141 [2023-12-02 15:55:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:23,160 INFO L225 Difference]: With dead ends: 211 [2023-12-02 15:55:23,160 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 15:55:23,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 365 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=407, Invalid=2673, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 15:55:23,161 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 62 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:23,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 379 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:55:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 15:55:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 15:55:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 99 states have internal predecessors, (102), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:55:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2023-12-02 15:55:23,215 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 141 [2023-12-02 15:55:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:23,216 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2023-12-02 15:55:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 10 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 10 states have call predecessors, (32), 10 states have call successors, (32) [2023-12-02 15:55:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2023-12-02 15:55:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-02 15:55:23,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:23,217 INFO L195 NwaCegarLoop]: trace histogram [20, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-12-02 15:55:23,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 15:55:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:55:23,417 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-12-02 15:55:23,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1174758685, now seen corresponding path program 4 times [2023-12-02 15:55:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:55:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853307933] [2023-12-02 15:55:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:55:23,427 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:55:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301435404] [2023-12-02 15:55:23,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:55:23,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:55:23,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:55:23,428 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:55:23,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 15:55:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:23,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 15:55:23,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 69 proven. 107 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-02 15:55:24,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:55:25,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:55:25,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853307933] [2023-12-02 15:55:25,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:55:25,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301435404] [2023-12-02 15:55:25,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301435404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:55:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1810355683] [2023-12-02 15:55:25,326 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 15:55:25,326 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:55:25,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:55:25,326 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:55:25,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:55:38,234 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:55:38,237 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:55:48,328 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34387#(and (<= 2147483648 (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) 2147483647))' at error location [2023-12-02 15:55:48,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:55:48,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:55:48,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 15:55:48,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739281623] [2023-12-02 15:55:48,328 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:55:48,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:55:48,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:55:48,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:55:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 15:55:48,330 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 7 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-02 15:55:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:49,658 INFO L93 Difference]: Finished difference Result 171 states and 200 transitions. [2023-12-02 15:55:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 15:55:49,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 7 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 158 [2023-12-02 15:55:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:49,659 INFO L225 Difference]: With dead ends: 171 [2023-12-02 15:55:49,659 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:55:49,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 281 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=380, Invalid=2170, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 15:55:49,660 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 83 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:49,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 299 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:55:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:55:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:55:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:55:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:55:49,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 158 [2023-12-02 15:55:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:49,660 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:55:49,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 7 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-02 15:55:49,661 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:55:49,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:55:49,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-12-02 15:55:49,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-12-02 15:55:49,664 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-12-02 15:55:49,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-12-02 15:55:49,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-12-02 15:55:49,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-12-02 15:55:49,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-12-02 15:55:49,665 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-12-02 15:55:49,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 15:55:49,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd81448a-72ad-4544-b95b-9f6dccf112d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:55:49,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.