./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.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_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/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_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/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_766e221d-096c-4245-8245-bc258fc1d140/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 baeebe831189d0208212eeaf417b83dac95cdcd24131565645f78fcbd5cf583c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:04:24,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:04:24,877 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 16:04:24,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:04:24,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:04:24,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:04:24,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:04:24,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:04:24,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:04:24,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:04:24,914 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:04:24,915 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:04:24,916 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:04:24,916 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:04:24,917 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:04:24,917 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:04:24,918 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:04:24,919 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:04:24,919 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:04:24,920 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:04:24,920 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:04:24,921 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:04:24,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:04:24,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:04:24,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:04:24,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:04:24,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:04:24,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:04:24,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:04:24,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:04:24,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:04:24,926 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:04:24,926 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:04:24,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:04:24,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:04:24,927 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:04:24,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:04:24,928 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:04:24,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:04:24,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:04:24,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:04:24,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:04:24,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:04:24,930 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:04:24,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:04:24,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:04:24,930 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:04:24,930 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:04:24,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:04:24,931 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_766e221d-096c-4245-8245-bc258fc1d140/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> baeebe831189d0208212eeaf417b83dac95cdcd24131565645f78fcbd5cf583c [2023-12-02 16:04:25,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:04:25,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:04:25,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:04:25,281 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:04:25,281 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:04:25,283 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c [2023-12-02 16:04:28,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:04:28,870 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:04:28,870 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c [2023-12-02 16:04:28,888 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/data/a4868c458/1141c61d432c47379e0184002f2fe8d5/FLAG94d144545 [2023-12-02 16:04:28,906 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/data/a4868c458/1141c61d432c47379e0184002f2fe8d5 [2023-12-02 16:04:28,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:04:28,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:04:28,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:04:28,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:04:28,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:04:28,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:04:28" (1/1) ... [2023-12-02 16:04:28,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50251f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:28, skipping insertion in model container [2023-12-02 16:04:28,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:04:28" (1/1) ... [2023-12-02 16:04:28,947 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:04:29,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:04:29,162 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:04:29,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:04:29,198 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:04:29,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29 WrapperNode [2023-12-02 16:04:29,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:04:29,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:04:29,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:04:29,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:04:29,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,249 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-12-02 16:04:29,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:04:29,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:04:29,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:04:29,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:04:29,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:04:29,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:04:29,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:04:29,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:04:29,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (1/1) ... [2023-12-02 16:04:29,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:04:29,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:29,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:04:29,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:04:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:04:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:04:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:04:29,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:04:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:04:29,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:04:29,464 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:04:29,466 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:04:29,902 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:04:29,939 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:04:29,939 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:04:29,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:04:29 BoogieIcfgContainer [2023-12-02 16:04:29,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:04:29,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:04:29,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:04:29,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:04:29,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:04:28" (1/3) ... [2023-12-02 16:04:29,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750912fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:04:29, skipping insertion in model container [2023-12-02 16:04:29,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:04:29" (2/3) ... [2023-12-02 16:04:29,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750912fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:04:29, skipping insertion in model container [2023-12-02 16:04:29,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:04:29" (3/3) ... [2023-12-02 16:04:29,952 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound100.c [2023-12-02 16:04:29,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:04:29,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-12-02 16:04:30,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:04:30,037 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;@3908314f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:04:30,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-12-02 16:04:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 98 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 16:04:30,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:30,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 16:04:30,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:30,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash 161673, now seen corresponding path program 1 times [2023-12-02 16:04:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298837590] [2023-12-02 16:04:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:30,285 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 16:04:30,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:30,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298837590] [2023-12-02 16:04:30,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298837590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:30,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:30,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:04:30,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707635775] [2023-12-02 16:04:30,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:04:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:04:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:04:30,326 INFO L87 Difference]: Start difference. First operand has 102 states, 52 states have (on average 1.9423076923076923) internal successors, (101), 98 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 16:04:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:30,420 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2023-12-02 16:04:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:04:30,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-12-02 16:04:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:30,432 INFO L225 Difference]: With dead ends: 147 [2023-12-02 16:04:30,432 INFO L226 Difference]: Without dead ends: 98 [2023-12-02 16:04:30,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:04:30,439 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 4 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 274 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:04:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-02 16:04:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-12-02 16:04:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 95 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2023-12-02 16:04:30,492 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 3 [2023-12-02 16:04:30,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:30,493 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2023-12-02 16:04:30,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 16:04:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2023-12-02 16:04:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:04:30,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:30,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:04:30,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:04:30,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:30,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash 521473922, now seen corresponding path program 1 times [2023-12-02 16:04:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:30,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817962094] [2023-12-02 16:04:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:30,556 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 16:04:30,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817962094] [2023-12-02 16:04:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817962094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:30,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:30,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:04:30,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163028342] [2023-12-02 16:04:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:30,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:04:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:04:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:04:30,562 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:04:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:30,724 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2023-12-02 16:04:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:04:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-02 16:04:30,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:30,728 INFO L225 Difference]: With dead ends: 183 [2023-12-02 16:04:30,728 INFO L226 Difference]: Without dead ends: 178 [2023-12-02 16:04:30,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 16:04:30,731 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 78 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:30,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 121 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:04:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-02 16:04:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 127. [2023-12-02 16:04:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.7469879518072289) internal successors, (145), 123 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2023-12-02 16:04:30,752 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 6 [2023-12-02 16:04:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:30,753 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2023-12-02 16:04:30,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:04:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2023-12-02 16:04:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:04:30,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:30,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:30,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:04:30,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:30,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1374732988, now seen corresponding path program 1 times [2023-12-02 16:04:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889992243] [2023-12-02 16:04:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:30,814 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 16:04:30,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:30,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889992243] [2023-12-02 16:04:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889992243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:30,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:30,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:04:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313472653] [2023-12-02 16:04:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:30,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:04:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:04:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:04:30,818 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 16:04:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:31,060 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2023-12-02 16:04:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:04:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-12-02 16:04:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:31,063 INFO L225 Difference]: With dead ends: 175 [2023-12-02 16:04:31,063 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 16:04:31,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 16:04:31,066 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 52 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:31,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 71 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:04:31,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 16:04:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 139. [2023-12-02 16:04:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 95 states have (on average 1.568421052631579) internal successors, (149), 135 states have internal predecessors, (149), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2023-12-02 16:04:31,083 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 8 [2023-12-02 16:04:31,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2023-12-02 16:04:31,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 16:04:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2023-12-02 16:04:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:04:31,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:31,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:04:31,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:31,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash -278178166, now seen corresponding path program 1 times [2023-12-02 16:04:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713676707] [2023-12-02 16:04:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:31,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:31,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740684091] [2023-12-02 16:04:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:31,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:31,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:31,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:04:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:31,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:04:31,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:31,236 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 16:04:31,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:31,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713676707] [2023-12-02 16:04:31,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740684091] [2023-12-02 16:04:31,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740684091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:31,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:31,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:04:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140752006] [2023-12-02 16:04:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:04:31,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:04:31,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:04:31,240 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 16:04:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:31,440 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2023-12-02 16:04:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:04:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-12-02 16:04:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:31,442 INFO L225 Difference]: With dead ends: 151 [2023-12-02 16:04:31,442 INFO L226 Difference]: Without dead ends: 137 [2023-12-02 16:04:31,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 16:04:31,444 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 132 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:31,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 36 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:04:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-02 16:04:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2023-12-02 16:04:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 127 states have internal predecessors, (140), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2023-12-02 16:04:31,459 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 14 [2023-12-02 16:04:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:31,459 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2023-12-02 16:04:31,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 16:04:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2023-12-02 16:04:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 16:04:31,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:31,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:31,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:04:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:31,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:31,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -33588488, now seen corresponding path program 1 times [2023-12-02 16:04:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:31,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763710986] [2023-12-02 16:04:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:31,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:31,677 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:31,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180005723] [2023-12-02 16:04:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:31,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:31,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:31,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:31,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:04:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:31,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:04:31,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:31,790 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 16:04:31,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:31,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763710986] [2023-12-02 16:04:31,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180005723] [2023-12-02 16:04:31,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180005723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:31,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:31,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:04:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889908376] [2023-12-02 16:04:31,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:04:31,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:31,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:04:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:04:31,793 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 16:04:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:31,920 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2023-12-02 16:04:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:04:31,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2023-12-02 16:04:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:31,921 INFO L225 Difference]: With dead ends: 144 [2023-12-02 16:04:31,921 INFO L226 Difference]: Without dead ends: 120 [2023-12-02 16:04:31,922 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 16:04:31,923 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:31,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 59 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:04:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-02 16:04:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2023-12-02 16:04:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 85 states have (on average 1.423529411764706) internal successors, (121), 113 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 125 transitions. [2023-12-02 16:04:31,932 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 125 transitions. Word has length 15 [2023-12-02 16:04:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:31,933 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 125 transitions. [2023-12-02 16:04:31,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 16:04:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 125 transitions. [2023-12-02 16:04:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 16:04:31,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:31,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 16:04:31,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 16:04:32,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:32,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:32,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 876211737, now seen corresponding path program 1 times [2023-12-02 16:04:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832326921] [2023-12-02 16:04:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:32,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115146849] [2023-12-02 16:04:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:32,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:32,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:32,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:32,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:04:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:32,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:04:32,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:32,243 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 16:04:32,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:32,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832326921] [2023-12-02 16:04:32,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115146849] [2023-12-02 16:04:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115146849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:32,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:32,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:04:32,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546452097] [2023-12-02 16:04:32,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:32,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:04:32,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:32,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:04:32,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:04:32,246 INFO L87 Difference]: Start difference. First operand 117 states and 125 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:32,259 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2023-12-02 16:04:32,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:04:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-12-02 16:04:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:32,261 INFO L225 Difference]: With dead ends: 117 [2023-12-02 16:04:32,261 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 16:04:32,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 16:04:32,262 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 54 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:32,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 76 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:04:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 16:04:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-02 16:04:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 85 states have (on average 1.4) internal successors, (119), 112 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2023-12-02 16:04:32,268 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 28 [2023-12-02 16:04:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:32,269 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2023-12-02 16:04:32,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2023-12-02 16:04:32,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 16:04:32,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:32,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 16:04:32,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:04:32,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:32,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:32,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1392760163, now seen corresponding path program 1 times [2023-12-02 16:04:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:32,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510112906] [2023-12-02 16:04:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:32,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:32,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515236073] [2023-12-02 16:04:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:32,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:32,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:32,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:32,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:04:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:32,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:04:32,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:32,579 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 16:04:32,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:32,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510112906] [2023-12-02 16:04:32,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515236073] [2023-12-02 16:04:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515236073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:04:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735374744] [2023-12-02 16:04:32,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:32,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:04:32,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:04:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:04:32,582 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:32,597 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2023-12-02 16:04:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:04:32,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-12-02 16:04:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:32,598 INFO L225 Difference]: With dead ends: 117 [2023-12-02 16:04:32,598 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 16:04:32,599 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 16:04:32,600 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:32,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:04:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 16:04:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-02 16:04:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 85 states have (on average 1.388235294117647) internal successors, (118), 112 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2023-12-02 16:04:32,607 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 29 [2023-12-02 16:04:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:32,608 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-12-02 16:04:32,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2023-12-02 16:04:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:04:32,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:32,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:32,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:04:32,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:32,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:32,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash -659514521, now seen corresponding path program 1 times [2023-12-02 16:04:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283366904] [2023-12-02 16:04:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:32,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:32,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:32,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521636741] [2023-12-02 16:04:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:32,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:32,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:32,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:32,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:04:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:32,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:04:32,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:32,930 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 16:04:32,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:32,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283366904] [2023-12-02 16:04:32,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521636741] [2023-12-02 16:04:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521636741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:32,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:32,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:04:32,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231497353] [2023-12-02 16:04:32,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:32,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:04:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:32,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:04:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:04:32,933 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:33,111 INFO L93 Difference]: Finished difference Result 203 states and 215 transitions. [2023-12-02 16:04:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:04:33,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-12-02 16:04:33,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:33,114 INFO L225 Difference]: With dead ends: 203 [2023-12-02 16:04:33,114 INFO L226 Difference]: Without dead ends: 187 [2023-12-02 16:04:33,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:04:33,115 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 60 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:33,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 87 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:04:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-02 16:04:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 162. [2023-12-02 16:04:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 130 states have (on average 1.3461538461538463) internal successors, (175), 157 states have internal predecessors, (175), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:04:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 181 transitions. [2023-12-02 16:04:33,124 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 181 transitions. Word has length 33 [2023-12-02 16:04:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:33,124 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 181 transitions. [2023-12-02 16:04:33,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 181 transitions. [2023-12-02 16:04:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 16:04:33,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:33,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:33,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:04:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:33,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:33,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:33,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1861708393, now seen corresponding path program 1 times [2023-12-02 16:04:33,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:33,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985755649] [2023-12-02 16:04:33,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:33,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:33,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922223685] [2023-12-02 16:04:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:33,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:33,337 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:33,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:04:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:33,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:04:33,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:33,433 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 16:04:33,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:33,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985755649] [2023-12-02 16:04:33,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:33,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922223685] [2023-12-02 16:04:33,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922223685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:33,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:33,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:04:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146305546] [2023-12-02 16:04:33,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:33,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:04:33,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:33,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:04:33,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:04:33,436 INFO L87 Difference]: Start difference. First operand 162 states and 181 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:33,496 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2023-12-02 16:04:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:04:33,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-12-02 16:04:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:33,498 INFO L225 Difference]: With dead ends: 163 [2023-12-02 16:04:33,498 INFO L226 Difference]: Without dead ends: 162 [2023-12-02 16:04:33,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 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 16:04:33,500 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 26 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:33,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 112 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:04:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-02 16:04:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-12-02 16:04:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 130 states have (on average 1.3384615384615384) internal successors, (174), 157 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:04:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 180 transitions. [2023-12-02 16:04:33,509 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 180 transitions. Word has length 35 [2023-12-02 16:04:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:33,509 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 180 transitions. [2023-12-02 16:04:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 180 transitions. [2023-12-02 16:04:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 16:04:33,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:33,510 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:33,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 16:04:33,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:33,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:33,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1899595573, now seen corresponding path program 1 times [2023-12-02 16:04:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066870247] [2023-12-02 16:04:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:33,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889488820] [2023-12-02 16:04:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:33,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:04:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:33,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:04:33,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:04:33,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:33,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066870247] [2023-12-02 16:04:33,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:33,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889488820] [2023-12-02 16:04:33,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889488820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:33,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:33,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:04:33,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014975544] [2023-12-02 16:04:33,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:33,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:04:33,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:04:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:04:33,849 INFO L87 Difference]: Start difference. First operand 162 states and 180 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:33,891 INFO L93 Difference]: Finished difference Result 162 states and 180 transitions. [2023-12-02 16:04:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:04:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-12-02 16:04:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:33,893 INFO L225 Difference]: With dead ends: 162 [2023-12-02 16:04:33,893 INFO L226 Difference]: Without dead ends: 161 [2023-12-02 16:04:33,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:04:33,895 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 55 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:33,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 146 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:04:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-02 16:04:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-02 16:04:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 130 states have (on average 1.323076923076923) internal successors, (172), 156 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 16:04:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2023-12-02 16:04:33,904 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 37 [2023-12-02 16:04:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:33,904 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2023-12-02 16:04:33,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2023-12-02 16:04:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:04:33,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:33,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:33,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 16:04:34,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:04:34,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:34,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:34,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1242079422, now seen corresponding path program 1 times [2023-12-02 16:04:34,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:34,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529482784] [2023-12-02 16:04:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:34,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:34,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:34,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740861391] [2023-12-02 16:04:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:34,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:34,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:34,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:34,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:04:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:34,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:04:34,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:04:34,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:04:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:04:34,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529482784] [2023-12-02 16:04:34,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:34,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740861391] [2023-12-02 16:04:34,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740861391] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:04:34,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [770375444] [2023-12-02 16:04:34,367 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:04:34,367 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:04:34,370 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:04:34,376 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:04:34,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:04:36,797 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 16:04:36,824 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:04:40,464 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3938#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 32767) (= ~counter~0 |ULTIMATE.start_main_#t~post5#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post5#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 |ULTIMATE.start_main_~y~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) 4611686018427387904)) (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:04:40,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:04:40,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:04:40,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-12-02 16:04:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72531058] [2023-12-02 16:04:40,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:04:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:04:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:04:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:04:40,466 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 10 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:40,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:40,624 INFO L93 Difference]: Finished difference Result 297 states and 309 transitions. [2023-12-02 16:04:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:04:40,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 10 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-02 16:04:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:40,627 INFO L225 Difference]: With dead ends: 297 [2023-12-02 16:04:40,627 INFO L226 Difference]: Without dead ends: 274 [2023-12-02 16:04:40,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 71 SyntacticMatches, 17 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 16:04:40,628 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 124 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:40,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 495 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:04:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-02 16:04:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 207. [2023-12-02 16:04:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 172 states have (on average 1.3430232558139534) internal successors, (231), 198 states have internal predecessors, (231), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:04:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 239 transitions. [2023-12-02 16:04:40,635 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 239 transitions. Word has length 38 [2023-12-02 16:04:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:40,635 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 239 transitions. [2023-12-02 16:04:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 10 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 239 transitions. [2023-12-02 16:04:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 16:04:40,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:40,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:40,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 16:04:40,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:40,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:40,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1644851506, now seen corresponding path program 1 times [2023-12-02 16:04:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:40,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539300665] [2023-12-02 16:04:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:40,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150539290] [2023-12-02 16:04:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:40,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:40,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:40,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:40,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:04:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:40,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:04:40,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:04:40,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:04:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:04:41,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539300665] [2023-12-02 16:04:41,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150539290] [2023-12-02 16:04:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150539290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:04:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [965347015] [2023-12-02 16:04:41,089 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:04:41,090 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:04:41,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:04:41,090 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:04:41,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:04:42,744 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 16:04:42,760 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:04:46,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4746#(and (<= 2 ~counter~0) (<= 1537228672809129302 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 32767) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 |ULTIMATE.start_main_~y~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) 4611686018427387904)) (<= ~counter~0 100) (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:04:46,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:04:46,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:04:46,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 16:04:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905720572] [2023-12-02 16:04:46,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:04:46,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:04:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:04:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-12-02 16:04:46,307 INFO L87 Difference]: Start difference. First operand 207 states and 239 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:46,612 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2023-12-02 16:04:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:04:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-12-02 16:04:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:46,614 INFO L225 Difference]: With dead ends: 224 [2023-12-02 16:04:46,614 INFO L226 Difference]: Without dead ends: 221 [2023-12-02 16:04:46,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 81 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:04:46,615 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 196 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:46,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 134 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:04:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-02 16:04:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 209. [2023-12-02 16:04:46,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 174 states have (on average 1.3103448275862069) internal successors, (228), 200 states have internal predecessors, (228), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:04:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 236 transitions. [2023-12-02 16:04:46,622 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 236 transitions. Word has length 41 [2023-12-02 16:04:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:46,622 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 236 transitions. [2023-12-02 16:04:46,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:04:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 236 transitions. [2023-12-02 16:04:46,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 16:04:46,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:46,623 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 16:04:46,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 16:04:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:46,824 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:46,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2020497094, now seen corresponding path program 1 times [2023-12-02 16:04:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672805534] [2023-12-02 16:04:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:46,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341925566] [2023-12-02 16:04:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:46,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:46,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:46,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:04:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:46,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:04:46,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:04:46,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:04:46,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672805534] [2023-12-02 16:04:46,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341925566] [2023-12-02 16:04:46,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341925566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:46,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:04:46,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:04:46,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231582728] [2023-12-02 16:04:46,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:46,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:04:46,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:46,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:04:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:04:46,937 INFO L87 Difference]: Start difference. First operand 209 states and 236 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:47,031 INFO L93 Difference]: Finished difference Result 209 states and 236 transitions. [2023-12-02 16:04:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:04:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-12-02 16:04:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:47,033 INFO L225 Difference]: With dead ends: 209 [2023-12-02 16:04:47,033 INFO L226 Difference]: Without dead ends: 178 [2023-12-02 16:04:47,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 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 16:04:47,034 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 93 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:47,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 47 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:04:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-02 16:04:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-12-02 16:04:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 156 states have (on average 1.1730769230769231) internal successors, (183), 169 states have internal predecessors, (183), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:04:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 191 transitions. [2023-12-02 16:04:47,042 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 191 transitions. Word has length 49 [2023-12-02 16:04:47,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:47,043 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 191 transitions. [2023-12-02 16:04:47,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:47,043 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 191 transitions. [2023-12-02 16:04:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 16:04:47,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:47,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:04:47,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 16:04:47,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:47,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:47,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1287579685, now seen corresponding path program 1 times [2023-12-02 16:04:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516379571] [2023-12-02 16:04:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:47,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:47,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556227362] [2023-12-02 16:04:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:47,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:47,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:47,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:47,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 16:04:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:04:47,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:04:47,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:04:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:04:47,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:04:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:04:47,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:04:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516379571] [2023-12-02 16:04:47,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:04:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556227362] [2023-12-02 16:04:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556227362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:04:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1948893816] [2023-12-02 16:04:47,433 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:04:47,433 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:04:47,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:04:47,434 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:04:47,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:04:48,854 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 16:04:48,871 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:04:52,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1948893816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:04:52,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:04:52,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [3, 3] total 20 [2023-12-02 16:04:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586521967] [2023-12-02 16:04:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:04:52,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 16:04:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:04:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 16:04:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:04:52,225 INFO L87 Difference]: Start difference. First operand 178 states and 191 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:55,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:55,955 INFO L93 Difference]: Finished difference Result 184 states and 197 transitions. [2023-12-02 16:04:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 16:04:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2023-12-02 16:04:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:55,957 INFO L225 Difference]: With dead ends: 184 [2023-12-02 16:04:55,957 INFO L226 Difference]: Without dead ends: 145 [2023-12-02 16:04:55,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 138 SyntacticMatches, 30 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:04:55,958 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:55,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 2 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 16:04:55,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-02 16:04:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2023-12-02 16:04:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 136 states have internal predecessors, (137), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 16:04:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2023-12-02 16:04:55,967 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 63 [2023-12-02 16:04:55,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:04:55,967 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2023-12-02 16:04:55,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:04:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2023-12-02 16:04:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 16:04:55,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:04:55,969 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 1, 1] [2023-12-02 16:04:55,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 16:04:56,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:56,169 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:04:56,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:04:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1489109046, now seen corresponding path program 2 times [2023-12-02 16:04:56,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:04:56,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798620681] [2023-12-02 16:04:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:04:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:04:56,178 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:04:56,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658879220] [2023-12-02 16:04:56,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:04:56,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:04:56,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:04:56,179 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:04:56,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 16:05:00,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 16:05:00,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:05:00,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 16:05:00,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:05:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 114 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 16:05:00,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:05:04,414 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)))) (or (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) (div .cse0 6)) 1537228672809129301) (not (= (mod .cse0 6) 0)))) is different from false [2023-12-02 16:06:08,877 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 9) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 13)) 6) (* |c_ULTIMATE.start_main_~y~0#1| 4)) 1537228672809129297) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)))) is different from false [2023-12-02 16:07:15,337 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (div (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 37) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15)) 6) (* |c_ULTIMATE.start_main_~y~0#1| 6)) 1537228672809129288))) is different from false [2023-12-02 16:08:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 114 not checked. [2023-12-02 16:08:09,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798620681] [2023-12-02 16:08:09,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658879220] [2023-12-02 16:08:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658879220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:08:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486927236] [2023-12-02 16:08:09,702 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:08:09,702 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:08:09,702 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:08:09,703 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:08:09,703 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:08:11,035 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 16:08:11,050 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:08:18,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7214#(and (<= 2 ~counter~0) (<= 1537228672809129302 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 32767) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 |ULTIMATE.start_main_~y~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) 4611686018427387904)) (<= ~counter~0 100) (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:08:18,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:08:18,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:08:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-02 16:08:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698135993] [2023-12-02 16:08:18,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:08:18,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:08:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:08:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=650, Unknown=3, NotChecked=162, Total=930 [2023-12-02 16:08:18,996 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 15 states, 13 states have (on average 15.538461538461538) internal successors, (202), 15 states have internal predecessors, (202), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:08:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:19,428 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2023-12-02 16:08:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 16:08:19,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 15.538461538461538) internal successors, (202), 15 states have internal predecessors, (202), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 109 [2023-12-02 16:08:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:19,430 INFO L225 Difference]: With dead ends: 187 [2023-12-02 16:08:19,430 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 16:08:19,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 246 SyntacticMatches, 50 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=174, Invalid=1025, Unknown=3, NotChecked=204, Total=1406 [2023-12-02 16:08:19,431 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 286 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:19,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 231 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 519 Invalid, 0 Unknown, 414 Unchecked, 0.3s Time] [2023-12-02 16:08:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 16:08:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2023-12-02 16:08:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 168 states have (on average 1.0238095238095237) internal successors, (172), 170 states have internal predecessors, (172), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:08:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2023-12-02 16:08:19,442 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 109 [2023-12-02 16:08:19,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:19,442 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2023-12-02 16:08:19,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 15.538461538461538) internal successors, (202), 15 states have internal predecessors, (202), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:08:19,442 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2023-12-02 16:08:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 16:08:19,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:19,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-12-02 16:08:19,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 16:08:19,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:19,645 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:08:19,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:19,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1663113400, now seen corresponding path program 2 times [2023-12-02 16:08:19,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:19,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232491112] [2023-12-02 16:08:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:19,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:19,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:19,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629201602] [2023-12-02 16:08:19,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:08:19,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:19,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:19,657 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:19,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 16:08:19,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:08:19,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:08:19,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:08:19,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-02 16:08:19,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:08:19,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:19,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232491112] [2023-12-02 16:08:19,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:19,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629201602] [2023-12-02 16:08:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629201602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:08:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:08:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:08:19,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768604359] [2023-12-02 16:08:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:08:19,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:08:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:08:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:08:19,742 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:08:19,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:19,774 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2023-12-02 16:08:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:08:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 140 [2023-12-02 16:08:19,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:19,776 INFO L225 Difference]: With dead ends: 180 [2023-12-02 16:08:19,776 INFO L226 Difference]: Without dead ends: 179 [2023-12-02 16:08:19,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:08:19,776 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:19,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 96 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:08:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-02 16:08:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-12-02 16:08:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 169 states have internal predecessors, (170), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:08:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2023-12-02 16:08:19,790 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 140 [2023-12-02 16:08:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:19,790 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2023-12-02 16:08:19,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:08:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2023-12-02 16:08:19,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 16:08:19,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:19,792 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1] [2023-12-02 16:08:19,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-02 16:08:19,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 16:08:19,993 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:08:19,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:19,993 INFO L85 PathProgramCache]: Analyzing trace with hash 946359610, now seen corresponding path program 3 times [2023-12-02 16:08:19,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:19,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257446010] [2023-12-02 16:08:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:19,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:20,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:20,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895162421] [2023-12-02 16:08:20,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:08:20,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:20,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:20,005 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:20,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:08:20,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:08:20,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:08:20,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:08:20,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 4 proven. 350 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:08:20,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:08:24,435 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)))) (or (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) (div .cse0 6)) 1537228672809129301) (not (= (mod .cse0 6) 0)))) is different from false [2023-12-02 16:09:30,806 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 9) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 13)) 6) (* |c_ULTIMATE.start_main_~y~0#1| 4)) 1537228672809129297) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)))) is different from false [2023-12-02 16:10:37,273 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (div (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 37) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15)) 6) (* |c_ULTIMATE.start_main_~y~0#1| 6)) 1537228672809129288))) is different from false [2023-12-02 16:11:43,730 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 8) (div (+ (* |c_ULTIMATE.start_main_~y~0#1| 73) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 21) .cse0) 6)) 1537228672809129272) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)))) is different from false [2023-12-02 16:12:50,881 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (div (+ (* |c_ULTIMATE.start_main_~y~0#1| 121) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 27) .cse0) 6)) 1537228672809129247))) is different from false [2023-12-02 16:13:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 350 not checked. [2023-12-02 16:13:45,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257446010] [2023-12-02 16:13:45,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:13:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895162421] [2023-12-02 16:13:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895162421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:13:45,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479167919] [2023-12-02 16:13:45,359 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:13:45,359 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:13:45,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:13:45,360 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:13:45,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:13:46,730 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 16:13:46,744 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:13:55,278 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9531#(and (<= 2 ~counter~0) (<= 1537228672809129302 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 32767) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 |ULTIMATE.start_main_~y~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) 4611686018427387904)) (<= ~counter~0 100) (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:13:55,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:13:55,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:13:55,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-02 16:13:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995592913] [2023-12-02 16:13:55,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:13:55,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 16:13:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:55,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 16:13:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=764, Unknown=5, NotChecked=300, Total=1190 [2023-12-02 16:13:55,281 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 19 states, 17 states have (on average 19.176470588235293) internal successors, (326), 19 states have internal predecessors, (326), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 16:13:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:56,220 INFO L93 Difference]: Finished difference Result 249 states and 254 transitions. [2023-12-02 16:13:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:13:56,221 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 19.176470588235293) internal successors, (326), 19 states have internal predecessors, (326), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 177 [2023-12-02 16:13:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:56,222 INFO L225 Difference]: With dead ends: 249 [2023-12-02 16:13:56,222 INFO L226 Difference]: Without dead ends: 243 [2023-12-02 16:13:56,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 414 SyntacticMatches, 82 SemanticMatches, 47 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=205, Invalid=1702, Unknown=5, NotChecked=440, Total=2352 [2023-12-02 16:13:56,224 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 234 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 999 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:56,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 574 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1485 Invalid, 0 Unknown, 999 Unchecked, 0.6s Time] [2023-12-02 16:13:56,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-02 16:13:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2023-12-02 16:13:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 230 states have (on average 1.008695652173913) internal successors, (232), 231 states have internal predecessors, (232), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 16:13:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 246 transitions. [2023-12-02 16:13:56,242 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 246 transitions. Word has length 177 [2023-12-02 16:13:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:56,243 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 246 transitions. [2023-12-02 16:13:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 19.176470588235293) internal successors, (326), 19 states have internal predecessors, (326), 10 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 16:13:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 246 transitions. [2023-12-02 16:13:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-02 16:13:56,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:56,246 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1] [2023-12-02 16:13:56,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 16:13:56,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 16:13:56,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:13:56,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -226600898, now seen corresponding path program 4 times [2023-12-02 16:13:56,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221019354] [2023-12-02 16:13:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:56,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:56,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:13:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234963168] [2023-12-02 16:13:56,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 16:13:56,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:13:56,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:13:56,467 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:13:56,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 16:13:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:56,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 16:13:56,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:13:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 9 proven. 715 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 16:13:57,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:14:02,010 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)))) (or (not (= (mod .cse0 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 12) (div .cse0 6) (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 3)) 1537228672809129288))) is different from false [2023-12-02 16:14:58,368 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (< (+ (div (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 9) .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 13)) 6) (* |c_ULTIMATE.start_main_~y~0#1| 18) (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 3)) 1537228672809129272) (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)))) is different from false [2023-12-02 16:16:04,909 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 24) (div (+ .cse0 (* |c_ULTIMATE.start_main_~y~0#1| 37) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15)) 6) (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 3)) 1537228672809129247))) is different from false [2023-12-02 16:17:11,325 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 30) (div (+ (* |c_ULTIMATE.start_main_~y~0#1| 73) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 21) .cse0) 6) (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 3)) 1537228672809129211))) is different from false [2023-12-02 16:18:17,883 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2))) (or (not (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 6) 0)) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| 36) (div (+ (* |c_ULTIMATE.start_main_~y~0#1| 121) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 27) .cse0) 6) (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 3)) 1537228672809129162))) is different from false [2023-12-02 16:19:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 36 trivial. 652 not checked. [2023-12-02 16:19:12,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:19:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221019354] [2023-12-02 16:19:12,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:19:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234963168] [2023-12-02 16:19:12,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234963168] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:19:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [761965530] [2023-12-02 16:19:12,279 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 16:19:12,279 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:19:12,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:19:12,280 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:19:12,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:19:13,509 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 55 for LOIs [2023-12-02 16:19:13,523 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:19:31,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11597#(and (<= 2 ~counter~0) (<= 1537228672809129302 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 32767) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 3 |ULTIMATE.start_main_~y~0#1|)) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) 4611686018427387904)) (<= ~counter~0 100) (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:19:31,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:19:31,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:19:31,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2023-12-02 16:19:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429346981] [2023-12-02 16:19:31,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:19:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 16:19:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:19:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 16:19:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1259, Unknown=5, NotChecked=390, Total=1892 [2023-12-02 16:19:31,182 INFO L87 Difference]: Start difference. First operand 243 states and 246 transitions. Second operand has 28 states, 26 states have (on average 17.307692307692307) internal successors, (450), 28 states have internal predecessors, (450), 14 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 16:19:35,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 16:19:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:19:35,608 INFO L93 Difference]: Finished difference Result 416 states and 432 transitions. [2023-12-02 16:19:35,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 16:19:35,609 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 17.307692307692307) internal successors, (450), 28 states have internal predecessors, (450), 14 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 245 [2023-12-02 16:19:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:19:35,611 INFO L225 Difference]: With dead ends: 416 [2023-12-02 16:19:35,611 INFO L226 Difference]: Without dead ends: 404 [2023-12-02 16:19:35,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 577 SyntacticMatches, 114 SemanticMatches, 65 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 4184 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=637, Invalid=3160, Unknown=5, NotChecked=620, Total=4422 [2023-12-02 16:19:35,612 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 418 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 4213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1834 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:19:35,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 833 Invalid, 4213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2344 Invalid, 1 Unknown, 1834 Unchecked, 3.5s Time] [2023-12-02 16:19:35,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-12-02 16:19:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2023-12-02 16:19:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 385 states have (on average 1.0051948051948052) internal successors, (387), 386 states have internal predecessors, (387), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 16:19:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 411 transitions. [2023-12-02 16:19:35,639 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 411 transitions. Word has length 245 [2023-12-02 16:19:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:19:35,639 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 411 transitions. [2023-12-02 16:19:35,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 17.307692307692307) internal successors, (450), 28 states have internal predecessors, (450), 14 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 16:19:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 411 transitions. [2023-12-02 16:19:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-02 16:19:35,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:19:35,648 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1] [2023-12-02 16:19:35,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 16:19:35,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 16:19:35,848 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2023-12-02 16:19:35,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:19:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash 903471880, now seen corresponding path program 5 times [2023-12-02 16:19:35,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:19:35,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510324747] [2023-12-02 16:19:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:19:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:19:35,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:19:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358225781] [2023-12-02 16:19:35,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:19:35,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:19:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:19:35,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:19:35,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766e221d-096c-4245-8245-bc258fc1d140/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process