./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/bresenham-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/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_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/bresenham-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/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_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/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 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:53:43,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:53:43,250 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 17:53:43,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:53:43,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:53:43,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:53:43,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:53:43,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:53:43,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:53:43,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:53:43,283 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:53:43,283 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:53:43,284 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:53:43,284 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:53:43,285 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:53:43,285 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:53:43,286 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:53:43,286 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:53:43,286 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:53:43,287 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:53:43,288 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:53:43,288 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:53:43,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:53:43,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:53:43,290 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:53:43,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:53:43,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:53:43,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:53:43,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:53:43,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:53:43,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:53:43,293 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:53:43,293 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:53:43,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:53:43,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:53:43,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:53:43,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:53:43,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:53:43,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:53:43,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:53:43,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:53:43,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:53:43,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:53:43,296 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:53:43,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:53:43,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:53:43,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:53:43,297 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:53:43,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:53:43,297 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_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f [2023-12-02 17:53:43,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:53:43,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:53:43,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:53:43,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:53:43,530 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:53:43,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2023-12-02 17:53:46,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:53:46,446 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:53:46,447 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2023-12-02 17:53:46,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/data/ed7c1612f/b06521e738c141ae96624c2ea9f2f526/FLAGfc67a6693 [2023-12-02 17:53:46,468 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/data/ed7c1612f/b06521e738c141ae96624c2ea9f2f526 [2023-12-02 17:53:46,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:53:46,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:53:46,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:53:46,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:53:46,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:53:46,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ec87d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46, skipping insertion in model container [2023-12-02 17:53:46,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,498 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:53:46,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:53:46,647 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:53:46,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:53:46,679 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:53:46,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46 WrapperNode [2023-12-02 17:53:46,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:53:46,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:53:46,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:53:46,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:53:46,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,722 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2023-12-02 17:53:46,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:53:46,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:53:46,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:53:46,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:53:46,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,734 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,744 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:53:46,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:53:46,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:53:46,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:53:46,748 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (1/1) ... [2023-12-02 17:53:46,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:53:46,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:46,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:53:46,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:53:46,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:53:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:53:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:53:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:53:46,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 17:53:46,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 17:53:46,880 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:53:46,882 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:53:47,211 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:53:47,241 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:53:47,241 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:53:47,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:53:47 BoogieIcfgContainer [2023-12-02 17:53:47,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:53:47,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:53:47,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:53:47,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:53:47,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:53:46" (1/3) ... [2023-12-02 17:53:47,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2cc0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:53:47, skipping insertion in model container [2023-12-02 17:53:47,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:53:46" (2/3) ... [2023-12-02 17:53:47,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2cc0b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:53:47, skipping insertion in model container [2023-12-02 17:53:47,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:53:47" (3/3) ... [2023-12-02 17:53:47,252 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2023-12-02 17:53:47,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:53:47,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-12-02 17:53:47,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:53:47,326 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;@7f2a510b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:53:47,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-12-02 17:53:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 65 states have (on average 1.9384615384615385) internal successors, (126), 123 states have internal predecessors, (126), 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 17:53:47,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 17:53:47,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:47,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 17:53:47,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:47,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash 6141, now seen corresponding path program 1 times [2023-12-02 17:53:47,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:47,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943125368] [2023-12-02 17:53:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:47,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:47,503 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 17:53:47,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943125368] [2023-12-02 17:53:47,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943125368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:47,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:47,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:53:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666956414] [2023-12-02 17:53:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:47,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:53:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:53:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:47,537 INFO L87 Difference]: Start difference. First operand has 127 states, 65 states have (on average 1.9384615384615385) internal successors, (126), 123 states have internal predecessors, (126), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 17:53:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:47,661 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2023-12-02 17:53:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:53:47,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 17:53:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:47,672 INFO L225 Difference]: With dead ends: 175 [2023-12-02 17:53:47,672 INFO L226 Difference]: Without dead ends: 120 [2023-12-02 17:53:47,675 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 17:53:47,678 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 118 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:47,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 64 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-02 17:53:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-02 17:53:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 64 states have (on average 1.859375) internal successors, (119), 117 states have internal predecessors, (119), 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 17:53:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2023-12-02 17:53:47,723 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 2 [2023-12-02 17:53:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:47,723 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2023-12-02 17:53:47,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 17:53:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2023-12-02 17:53:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:53:47,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:47,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:53:47,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:53:47,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:47,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash 190407, now seen corresponding path program 1 times [2023-12-02 17:53:47,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:47,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008400769] [2023-12-02 17:53:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:47,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:47,758 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 17:53:47,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008400769] [2023-12-02 17:53:47,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008400769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:47,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:47,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:53:47,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355296276] [2023-12-02 17:53:47,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:47,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:53:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:53:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:47,762 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 17:53:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:47,845 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2023-12-02 17:53:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:53:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 17:53:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:47,847 INFO L225 Difference]: With dead ends: 120 [2023-12-02 17:53:47,847 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 17:53:47,848 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 17:53:47,849 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 112 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:47,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 61 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 17:53:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-12-02 17:53:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 1.796875) internal successors, (115), 113 states have internal predecessors, (115), 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 17:53:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2023-12-02 17:53:47,862 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 3 [2023-12-02 17:53:47,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:47,863 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2023-12-02 17:53:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 17:53:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2023-12-02 17:53:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 17:53:47,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:47,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 17:53:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:53:47,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:47,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 5902655, now seen corresponding path program 1 times [2023-12-02 17:53:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:47,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706182504] [2023-12-02 17:53:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:47,912 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 17:53:47,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706182504] [2023-12-02 17:53:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706182504] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:47,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:47,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:53:47,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431417760] [2023-12-02 17:53:47,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:47,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:53:47,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:53:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:47,915 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:53:48,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:48,012 INFO L93 Difference]: Finished difference Result 116 states and 117 transitions. [2023-12-02 17:53:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:53:48,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 17:53:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:48,014 INFO L225 Difference]: With dead ends: 116 [2023-12-02 17:53:48,014 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 17:53:48,015 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 17:53:48,016 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 110 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:48,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 47 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 17:53:48,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-02 17:53:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 64 states have (on average 1.78125) internal successors, (114), 112 states have internal predecessors, (114), 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 17:53:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2023-12-02 17:53:48,027 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 4 [2023-12-02 17:53:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:48,027 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2023-12-02 17:53:48,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:53:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2023-12-02 17:53:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 17:53:48,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:48,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 17:53:48,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:53:48,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:48,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash 182982345, now seen corresponding path program 1 times [2023-12-02 17:53:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:48,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881840387] [2023-12-02 17:53:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:48,068 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 17:53:48,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881840387] [2023-12-02 17:53:48,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881840387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:48,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:48,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 17:53:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289793266] [2023-12-02 17:53:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:48,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:53:48,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:48,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:53:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:48,071 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:53:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:48,162 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2023-12-02 17:53:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:53:48,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-12-02 17:53:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:48,164 INFO L225 Difference]: With dead ends: 115 [2023-12-02 17:53:48,164 INFO L226 Difference]: Without dead ends: 114 [2023-12-02 17:53:48,164 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 17:53:48,166 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 108 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:48,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 47 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-02 17:53:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-02 17:53:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 64 states have (on average 1.765625) internal successors, (113), 111 states have internal predecessors, (113), 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 17:53:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2023-12-02 17:53:48,176 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 5 [2023-12-02 17:53:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:48,176 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2023-12-02 17:53:48,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 17:53:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2023-12-02 17:53:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:53:48,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:48,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:48,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:53:48,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:48,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -247624021, now seen corresponding path program 1 times [2023-12-02 17:53:48,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:48,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149112768] [2023-12-02 17:53:48,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:48,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:48,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327309805] [2023-12-02 17:53:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:48,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:48,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:48,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:53:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:48,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:48,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:48,261 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 17:53:48,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:48,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149112768] [2023-12-02 17:53:48,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:48,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327309805] [2023-12-02 17:53:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327309805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:48,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:53:48,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560982223] [2023-12-02 17:53:48,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:48,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:53:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:48,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:53:48,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:48,265 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 17:53:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:48,311 INFO L93 Difference]: Finished difference Result 221 states and 224 transitions. [2023-12-02 17:53:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:53:48,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-02 17:53:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:48,314 INFO L225 Difference]: With dead ends: 221 [2023-12-02 17:53:48,314 INFO L226 Difference]: Without dead ends: 215 [2023-12-02 17:53:48,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 17:53:48,316 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 99 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:48,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 200 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:53:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-02 17:53:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 139. [2023-12-02 17:53:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 88 states have (on average 1.7272727272727273) internal successors, (152), 135 states have internal predecessors, (152), 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 17:53:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2023-12-02 17:53:48,330 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 7 [2023-12-02 17:53:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:48,330 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2023-12-02 17:53:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 17:53:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2023-12-02 17:53:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 17:53:48,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:48,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:48,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:53:48,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:48,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:48,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:48,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1743481203, now seen corresponding path program 1 times [2023-12-02 17:53:48,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:48,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875132644] [2023-12-02 17:53:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:48,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144184573] [2023-12-02 17:53:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:48,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:48,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:48,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:53:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:48,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:48,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:48,597 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 17:53:48,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:48,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:48,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875132644] [2023-12-02 17:53:48,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:48,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144184573] [2023-12-02 17:53:48,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144184573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:48,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:48,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:53:48,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764422452] [2023-12-02 17:53:48,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:48,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:53:48,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:53:48,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:48,601 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 17:53:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:48,664 INFO L93 Difference]: Finished difference Result 246 states and 265 transitions. [2023-12-02 17:53:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:53:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-12-02 17:53:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:48,667 INFO L225 Difference]: With dead ends: 246 [2023-12-02 17:53:48,667 INFO L226 Difference]: Without dead ends: 240 [2023-12-02 17:53:48,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:53:48,669 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 97 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:48,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 198 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:53:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-02 17:53:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 188. [2023-12-02 17:53:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 136 states have (on average 1.7058823529411764) internal successors, (232), 183 states have internal predecessors, (232), 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 17:53:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 238 transitions. [2023-12-02 17:53:48,686 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 238 transitions. Word has length 9 [2023-12-02 17:53:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:48,686 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 238 transitions. [2023-12-02 17:53:48,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 17:53:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 238 transitions. [2023-12-02 17:53:48,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 17:53:48,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:48,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:48,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:53:48,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:48,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:48,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash -448188817, now seen corresponding path program 1 times [2023-12-02 17:53:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:48,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480603159] [2023-12-02 17:53:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:48,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:48,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739300267] [2023-12-02 17:53:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:48,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:48,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:48,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:48,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:53:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:48,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:53:48,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:48,975 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 17:53:48,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:48,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480603159] [2023-12-02 17:53:48,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739300267] [2023-12-02 17:53:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739300267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764704027] [2023-12-02 17:53:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:48,978 INFO L87 Difference]: Start difference. First operand 188 states and 238 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 17:53:49,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:49,144 INFO L93 Difference]: Finished difference Result 271 states and 313 transitions. [2023-12-02 17:53:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:49,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 17:53:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:49,147 INFO L225 Difference]: With dead ends: 271 [2023-12-02 17:53:49,147 INFO L226 Difference]: Without dead ends: 269 [2023-12-02 17:53:49,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 17:53:49,149 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 185 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:49,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 229 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-02 17:53:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 189. [2023-12-02 17:53:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 137 states have (on average 1.6934306569343065) internal successors, (232), 184 states have internal predecessors, (232), 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 17:53:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 238 transitions. [2023-12-02 17:53:49,162 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 238 transitions. Word has length 11 [2023-12-02 17:53:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:49,162 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 238 transitions. [2023-12-02 17:53:49,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 17:53:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 238 transitions. [2023-12-02 17:53:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:53:49,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:49,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:49,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:53:49,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:49,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:49,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1008951378, now seen corresponding path program 1 times [2023-12-02 17:53:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:49,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667190136] [2023-12-02 17:53:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:49,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:49,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180594820] [2023-12-02 17:53:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:49,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:49,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:49,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:53:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:49,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:53:49,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:49,429 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 17:53:49,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:49,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667190136] [2023-12-02 17:53:49,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:49,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180594820] [2023-12-02 17:53:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180594820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:49,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:49,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438619998] [2023-12-02 17:53:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:49,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:49,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:49,432 INFO L87 Difference]: Start difference. First operand 189 states and 238 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 17:53:49,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:49,578 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2023-12-02 17:53:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:49,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-12-02 17:53:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:49,580 INFO L225 Difference]: With dead ends: 269 [2023-12-02 17:53:49,580 INFO L226 Difference]: Without dead ends: 267 [2023-12-02 17:53:49,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 17:53:49,581 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 180 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:49,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 231 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:49,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-02 17:53:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 190. [2023-12-02 17:53:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 138 states have (on average 1.681159420289855) internal successors, (232), 185 states have internal predecessors, (232), 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 17:53:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 238 transitions. [2023-12-02 17:53:49,592 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 238 transitions. Word has length 12 [2023-12-02 17:53:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:49,593 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 238 transitions. [2023-12-02 17:53:49,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 17:53:49,593 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 238 transitions. [2023-12-02 17:53:49,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 17:53:49,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:49,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:49,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:53:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:49,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:49,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1212721583, now seen corresponding path program 1 times [2023-12-02 17:53:49,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:49,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300116555] [2023-12-02 17:53:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:49,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286772325] [2023-12-02 17:53:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:49,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:49,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:49,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:53:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:49,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:53:49,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:49,869 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 17:53:49,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:49,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300116555] [2023-12-02 17:53:49,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286772325] [2023-12-02 17:53:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286772325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:49,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:49,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470381254] [2023-12-02 17:53:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:49,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:49,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:49,872 INFO L87 Difference]: Start difference. First operand 190 states and 238 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 17:53:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:50,012 INFO L93 Difference]: Finished difference Result 256 states and 271 transitions. [2023-12-02 17:53:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-12-02 17:53:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:50,014 INFO L225 Difference]: With dead ends: 256 [2023-12-02 17:53:50,014 INFO L226 Difference]: Without dead ends: 254 [2023-12-02 17:53:50,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 17:53:50,015 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:50,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 234 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-02 17:53:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 190. [2023-12-02 17:53:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 138 states have (on average 1.6594202898550725) internal successors, (229), 185 states have internal predecessors, (229), 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 17:53:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 235 transitions. [2023-12-02 17:53:50,025 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 235 transitions. Word has length 13 [2023-12-02 17:53:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:50,025 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 235 transitions. [2023-12-02 17:53:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 17:53:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 235 transitions. [2023-12-02 17:53:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 17:53:50,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:50,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:50,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:53:50,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:50,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:50,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1060336656, now seen corresponding path program 1 times [2023-12-02 17:53:50,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:50,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010476457] [2023-12-02 17:53:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:50,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:50,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477941545] [2023-12-02 17:53:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:50,236 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:50,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:53:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:50,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:53:50,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:50,298 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 17:53:50,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:50,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:50,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010476457] [2023-12-02 17:53:50,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:50,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477941545] [2023-12-02 17:53:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477941545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:50,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463121291] [2023-12-02 17:53:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:50,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:50,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:50,300 INFO L87 Difference]: Start difference. First operand 190 states and 235 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 17:53:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:50,430 INFO L93 Difference]: Finished difference Result 254 states and 268 transitions. [2023-12-02 17:53:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:53:50,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 17:53:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:50,433 INFO L225 Difference]: With dead ends: 254 [2023-12-02 17:53:50,433 INFO L226 Difference]: Without dead ends: 252 [2023-12-02 17:53:50,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 17:53:50,434 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 197 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:50,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 232 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-02 17:53:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 190. [2023-12-02 17:53:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 138 states have (on average 1.6376811594202898) internal successors, (226), 185 states have internal predecessors, (226), 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 17:53:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 232 transitions. [2023-12-02 17:53:50,445 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 232 transitions. Word has length 14 [2023-12-02 17:53:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:50,445 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 232 transitions. [2023-12-02 17:53:50,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 17:53:50,446 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 232 transitions. [2023-12-02 17:53:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 17:53:50,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:50,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:50,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:53:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 17:53:50,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:50,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1489301965, now seen corresponding path program 1 times [2023-12-02 17:53:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:50,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177078938] [2023-12-02 17:53:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:50,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867886984] [2023-12-02 17:53:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:50,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:50,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:50,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:50,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 17:53:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:50,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 17:53:50,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:50,724 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 17:53:50,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:50,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177078938] [2023-12-02 17:53:50,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:50,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867886984] [2023-12-02 17:53:50,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867886984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:50,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:50,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412835026] [2023-12-02 17:53:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:53:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:53:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:53:50,726 INFO L87 Difference]: Start difference. First operand 190 states and 232 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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 17:53:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:50,867 INFO L93 Difference]: Finished difference Result 263 states and 301 transitions. [2023-12-02 17:53:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:53:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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 17:53:50,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:50,870 INFO L225 Difference]: With dead ends: 263 [2023-12-02 17:53:50,870 INFO L226 Difference]: Without dead ends: 261 [2023-12-02 17:53:50,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:53:50,871 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 245 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:50,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 232 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-02 17:53:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 193. [2023-12-02 17:53:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 141 states have (on average 1.6170212765957446) internal successors, (228), 188 states have internal predecessors, (228), 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 17:53:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 234 transitions. [2023-12-02 17:53:50,883 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 234 transitions. Word has length 15 [2023-12-02 17:53:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:50,883 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 234 transitions. [2023-12-02 17:53:50,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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 17:53:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 234 transitions. [2023-12-02 17:53:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:53:50,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:50,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:50,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 17:53:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:51,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:51,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1076279410, now seen corresponding path program 1 times [2023-12-02 17:53:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885272484] [2023-12-02 17:53:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:51,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:51,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:51,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597722163] [2023-12-02 17:53:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:51,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:51,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:51,095 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:51,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 17:53:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:51,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:53:51,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:51,206 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 17:53:51,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:51,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885272484] [2023-12-02 17:53:51,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597722163] [2023-12-02 17:53:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597722163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:51,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080975289] [2023-12-02 17:53:51,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:51,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:53:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:53:51,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:53:51,209 INFO L87 Difference]: Start difference. First operand 193 states and 234 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 17:53:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:51,416 INFO L93 Difference]: Finished difference Result 265 states and 299 transitions. [2023-12-02 17:53:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:53:51,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2023-12-02 17:53:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:51,418 INFO L225 Difference]: With dead ends: 265 [2023-12-02 17:53:51,418 INFO L226 Difference]: Without dead ends: 263 [2023-12-02 17:53:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:53:51,419 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 250 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 256 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-02 17:53:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 194. [2023-12-02 17:53:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 142 states have (on average 1.6056338028169015) internal successors, (228), 189 states have internal predecessors, (228), 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 17:53:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2023-12-02 17:53:51,429 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 16 [2023-12-02 17:53:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:51,430 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2023-12-02 17:53:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 17:53:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2023-12-02 17:53:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:53:51,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:51,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:51,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 17:53:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:51,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:51,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash -995076587, now seen corresponding path program 1 times [2023-12-02 17:53:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711403526] [2023-12-02 17:53:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:51,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:51,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384616442] [2023-12-02 17:53:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:51,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:51,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:51,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 17:53:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:51,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:53:51,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:51,777 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 17:53:51,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:51,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:51,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711403526] [2023-12-02 17:53:51,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:51,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384616442] [2023-12-02 17:53:51,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384616442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:51,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:51,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217263328] [2023-12-02 17:53:51,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:53:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:53:51,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:51,780 INFO L87 Difference]: Start difference. First operand 194 states and 234 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17:53:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:52,052 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2023-12-02 17:53:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:53:52,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2023-12-02 17:53:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:52,054 INFO L225 Difference]: With dead ends: 263 [2023-12-02 17:53:52,054 INFO L226 Difference]: Without dead ends: 261 [2023-12-02 17:53:52,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:53:52,055 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 362 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:52,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 170 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-02 17:53:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 195. [2023-12-02 17:53:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 143 states have (on average 1.5944055944055944) internal successors, (228), 190 states have internal predecessors, (228), 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 17:53:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 234 transitions. [2023-12-02 17:53:52,065 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 234 transitions. Word has length 17 [2023-12-02 17:53:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:52,065 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 234 transitions. [2023-12-02 17:53:52,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17:53:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 234 transitions. [2023-12-02 17:53:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:53:52,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:52,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:52,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 17:53:52,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:52,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:52,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash -782603052, now seen corresponding path program 1 times [2023-12-02 17:53:52,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:52,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948215638] [2023-12-02 17:53:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:52,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:52,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72600146] [2023-12-02 17:53:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:52,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:52,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:52,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:52,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 17:53:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:52,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:53:52,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:52,424 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 17:53:52,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:52,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948215638] [2023-12-02 17:53:52,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72600146] [2023-12-02 17:53:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72600146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:52,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:52,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:52,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384172908] [2023-12-02 17:53:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:52,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:53:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:53:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:52,426 INFO L87 Difference]: Start difference. First operand 195 states and 234 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 17:53:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:52,703 INFO L93 Difference]: Finished difference Result 261 states and 295 transitions. [2023-12-02 17:53:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:53:52,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2023-12-02 17:53:52,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:52,705 INFO L225 Difference]: With dead ends: 261 [2023-12-02 17:53:52,706 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 17:53:52,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:53:52,707 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 427 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:52,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 168 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 17:53:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 196. [2023-12-02 17:53:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 144 states have (on average 1.5833333333333333) internal successors, (228), 191 states have internal predecessors, (228), 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 17:53:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2023-12-02 17:53:52,717 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 18 [2023-12-02 17:53:52,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:52,717 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2023-12-02 17:53:52,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 17:53:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2023-12-02 17:53:52,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 17:53:52,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:52,718 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] [2023-12-02 17:53:52,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 17:53:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:52,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:52,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:52,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1444964903, now seen corresponding path program 1 times [2023-12-02 17:53:52,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:52,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046183259] [2023-12-02 17:53:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:52,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:52,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:52,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115788020] [2023-12-02 17:53:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:52,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:52,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:52,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:52,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 17:53:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:52,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:53:52,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:53,148 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 17:53:53,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:53,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046183259] [2023-12-02 17:53:53,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115788020] [2023-12-02 17:53:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115788020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:53,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505630452] [2023-12-02 17:53:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:53,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:53:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:53:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:53,151 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 17:53:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:53,485 INFO L93 Difference]: Finished difference Result 257 states and 293 transitions. [2023-12-02 17:53:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:53:53,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2023-12-02 17:53:53,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:53,487 INFO L225 Difference]: With dead ends: 257 [2023-12-02 17:53:53,487 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 17:53:53,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:53:53,488 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 343 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:53,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 104 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:53:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 17:53:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 197. [2023-12-02 17:53:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 147 states have (on average 1.5510204081632653) internal successors, (228), 192 states have internal predecessors, (228), 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 17:53:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2023-12-02 17:53:53,497 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 21 [2023-12-02 17:53:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:53,497 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2023-12-02 17:53:53,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 17:53:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2023-12-02 17:53:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 17:53:53,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:53,498 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] [2023-12-02 17:53:53,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 17:53:53,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:53,699 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:53,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1844238952, now seen corresponding path program 1 times [2023-12-02 17:53:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:53,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761519211] [2023-12-02 17:53:53,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:53,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746024021] [2023-12-02 17:53:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:53,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:53,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:53,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:53,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 17:53:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:53,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:53:53,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:53,904 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 17:53:53,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:53,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761519211] [2023-12-02 17:53:53,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746024021] [2023-12-02 17:53:53,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746024021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:53,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:53,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:53:53,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223169698] [2023-12-02 17:53:53,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:53:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:53:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:53:53,906 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 17:53:54,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:54,212 INFO L93 Difference]: Finished difference Result 251 states and 287 transitions. [2023-12-02 17:53:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:53:54,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-12-02 17:53:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:54,214 INFO L225 Difference]: With dead ends: 251 [2023-12-02 17:53:54,214 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 17:53:54,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:53:54,215 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 313 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:54,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 106 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:53:54,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 17:53:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 196. [2023-12-02 17:53:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 148 states have (on average 1.527027027027027) internal successors, (226), 191 states have internal predecessors, (226), 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 17:53:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2023-12-02 17:53:54,224 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 22 [2023-12-02 17:53:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:54,224 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2023-12-02 17:53:54,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 17:53:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2023-12-02 17:53:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 17:53:54,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:54,225 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] [2023-12-02 17:53:54,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 17:53:54,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 17:53:54,426 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1336832581, now seen corresponding path program 1 times [2023-12-02 17:53:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452131953] [2023-12-02 17:53:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:54,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:54,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425740420] [2023-12-02 17:53:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:54,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:54,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:54,433 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:54,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 17:53:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:54,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:54,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:54,541 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 17:53:54,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:54,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452131953] [2023-12-02 17:53:54,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:54,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425740420] [2023-12-02 17:53:54,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425740420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:54,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:54,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:54,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172882660] [2023-12-02 17:53:54,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:54,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:54,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:54,543 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 17:53:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:54,708 INFO L93 Difference]: Finished difference Result 223 states and 257 transitions. [2023-12-02 17:53:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:54,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2023-12-02 17:53:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:54,710 INFO L225 Difference]: With dead ends: 223 [2023-12-02 17:53:54,710 INFO L226 Difference]: Without dead ends: 221 [2023-12-02 17:53:54,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 17:53:54,711 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:54,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 125 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:53:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-02 17:53:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 197. [2023-12-02 17:53:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 149 states have (on average 1.516778523489933) internal successors, (226), 192 states have internal predecessors, (226), 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 17:53:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 232 transitions. [2023-12-02 17:53:54,720 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 232 transitions. Word has length 23 [2023-12-02 17:53:54,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:54,720 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 232 transitions. [2023-12-02 17:53:54,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 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 17:53:54,720 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 232 transitions. [2023-12-02 17:53:54,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:53:54,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:54,721 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] [2023-12-02 17:53:54,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 17:53:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 17:53:54,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:54,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1507863034, now seen corresponding path program 1 times [2023-12-02 17:53:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:54,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208664376] [2023-12-02 17:53:54,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:54,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:54,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:54,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504112261] [2023-12-02 17:53:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:54,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:54,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:54,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:54,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 17:53:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:54,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:54,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:55,015 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 17:53:55,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:55,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208664376] [2023-12-02 17:53:55,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:55,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504112261] [2023-12-02 17:53:55,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504112261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:55,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:55,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635663626] [2023-12-02 17:53:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:55,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:55,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:55,017 INFO L87 Difference]: Start difference. First operand 197 states and 232 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 17:53:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:55,169 INFO L93 Difference]: Finished difference Result 221 states and 255 transitions. [2023-12-02 17:53:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-12-02 17:53:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:55,171 INFO L225 Difference]: With dead ends: 221 [2023-12-02 17:53:55,171 INFO L226 Difference]: Without dead ends: 219 [2023-12-02 17:53:55,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 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 17:53:55,172 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 39 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:55,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 129 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-02 17:53:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 198. [2023-12-02 17:53:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 150 states have (on average 1.5066666666666666) internal successors, (226), 193 states have internal predecessors, (226), 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 17:53:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 232 transitions. [2023-12-02 17:53:55,181 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 232 transitions. Word has length 24 [2023-12-02 17:53:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:55,181 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 232 transitions. [2023-12-02 17:53:55,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 17:53:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 232 transitions. [2023-12-02 17:53:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:53:55,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:55,182 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] [2023-12-02 17:53:55,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 17:53:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 17:53:55,384 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:55,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash -86112123, now seen corresponding path program 1 times [2023-12-02 17:53:55,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506032212] [2023-12-02 17:53:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:55,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:55,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19052048] [2023-12-02 17:53:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:55,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:55,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:55,392 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:55,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 17:53:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:55,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:53:55,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:55,562 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 17:53:55,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:55,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:55,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506032212] [2023-12-02 17:53:55,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:55,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19052048] [2023-12-02 17:53:55,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19052048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:55,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:55,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:55,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223482450] [2023-12-02 17:53:55,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:55,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:55,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:55,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:55,565 INFO L87 Difference]: Start difference. First operand 198 states and 232 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 17:53:55,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:55,700 INFO L93 Difference]: Finished difference Result 219 states and 253 transitions. [2023-12-02 17:53:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:55,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 32 [2023-12-02 17:53:55,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:55,702 INFO L225 Difference]: With dead ends: 219 [2023-12-02 17:53:55,702 INFO L226 Difference]: Without dead ends: 217 [2023-12-02 17:53:55,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 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 17:53:55,703 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 195 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:55,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 88 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-02 17:53:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 207. [2023-12-02 17:53:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.4842767295597483) internal successors, (236), 202 states have internal predecessors, (236), 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 17:53:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 242 transitions. [2023-12-02 17:53:55,710 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 242 transitions. Word has length 32 [2023-12-02 17:53:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:55,711 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 242 transitions. [2023-12-02 17:53:55,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 17:53:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 242 transitions. [2023-12-02 17:53:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 17:53:55,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:55,712 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 17:53:55,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 17:53:55,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:55,915 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:55,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:55,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1625491585, now seen corresponding path program 1 times [2023-12-02 17:53:55,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:55,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611982947] [2023-12-02 17:53:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:55,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:55,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859183965] [2023-12-02 17:53:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:55,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:55,923 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:55,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 17:53:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:55,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:55,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:56,026 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 17:53:56,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:56,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611982947] [2023-12-02 17:53:56,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859183965] [2023-12-02 17:53:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859183965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:56,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731322717] [2023-12-02 17:53:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:56,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:56,028 INFO L87 Difference]: Start difference. First operand 207 states and 242 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 17:53:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:56,111 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2023-12-02 17:53:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:56,112 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 17:53:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:56,113 INFO L225 Difference]: With dead ends: 207 [2023-12-02 17:53:56,113 INFO L226 Difference]: Without dead ends: 206 [2023-12-02 17:53:56,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 17:53:56,114 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 79 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:56,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 117 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-02 17:53:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-02 17:53:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 159 states have (on average 1.471698113207547) internal successors, (234), 201 states have internal predecessors, (234), 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 17:53:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 240 transitions. [2023-12-02 17:53:56,123 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 240 transitions. Word has length 33 [2023-12-02 17:53:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:56,123 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 240 transitions. [2023-12-02 17:53:56,124 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 17:53:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 240 transitions. [2023-12-02 17:53:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 17:53:56,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:56,125 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 17:53:56,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 17:53:56,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:56,330 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:56,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1270678653, now seen corresponding path program 1 times [2023-12-02 17:53:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:56,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677158959] [2023-12-02 17:53:56,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:56,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:56,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501887050] [2023-12-02 17:53:56,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:56,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:56,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:56,338 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:56,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 17:53:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:56,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:56,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:56,421 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 17:53:56,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:56,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677158959] [2023-12-02 17:53:56,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:56,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501887050] [2023-12-02 17:53:56,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501887050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:56,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:56,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:56,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037310351] [2023-12-02 17:53:56,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:56,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:56,423 INFO L87 Difference]: Start difference. First operand 206 states and 240 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 17:53:56,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:56,456 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2023-12-02 17:53:56,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:56,457 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 17:53:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:56,458 INFO L225 Difference]: With dead ends: 206 [2023-12-02 17:53:56,458 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 17:53:56,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 17:53:56,459 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 77 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:56,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 182 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:53:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 17:53:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-12-02 17:53:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 159 states have (on average 1.4591194968553458) internal successors, (232), 200 states have internal predecessors, (232), 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 17:53:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 238 transitions. [2023-12-02 17:53:56,468 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 238 transitions. Word has length 35 [2023-12-02 17:53:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:56,468 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 238 transitions. [2023-12-02 17:53:56,469 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 17:53:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 238 transitions. [2023-12-02 17:53:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 17:53:56,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:56,470 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 17:53:56,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 17:53:56,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:56,674 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:56,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash -689742451, now seen corresponding path program 1 times [2023-12-02 17:53:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:56,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23675217] [2023-12-02 17:53:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:56,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:56,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:56,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77424552] [2023-12-02 17:53:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:56,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:56,680 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:56,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 17:53:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:56,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:53:56,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:56,889 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 17:53:56,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:56,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23675217] [2023-12-02 17:53:56,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77424552] [2023-12-02 17:53:56,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77424552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:56,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:56,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213461748] [2023-12-02 17:53:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:56,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:56,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:56,892 INFO L87 Difference]: Start difference. First operand 205 states and 238 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 17:53:57,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:57,022 INFO L93 Difference]: Finished difference Result 214 states and 246 transitions. [2023-12-02 17:53:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:57,025 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 17:53:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:57,027 INFO L225 Difference]: With dead ends: 214 [2023-12-02 17:53:57,027 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 17:53:57,027 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 17:53:57,028 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 159 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:57,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 85 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:53:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 17:53:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2023-12-02 17:53:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 160 states have (on average 1.45625) internal successors, (233), 201 states have internal predecessors, (233), 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 17:53:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 239 transitions. [2023-12-02 17:53:57,035 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 239 transitions. Word has length 35 [2023-12-02 17:53:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:57,036 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 239 transitions. [2023-12-02 17:53:57,036 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 17:53:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 239 transitions. [2023-12-02 17:53:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 17:53:57,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:57,037 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, 1] [2023-12-02 17:53:57,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 17:53:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 17:53:57,242 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:57,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -736332453, now seen corresponding path program 1 times [2023-12-02 17:53:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192831646] [2023-12-02 17:53:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:57,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:57,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385768444] [2023-12-02 17:53:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:57,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:57,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:57,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:57,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 17:53:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:57,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:57,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:57,322 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 17:53:57,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:57,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:57,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192831646] [2023-12-02 17:53:57,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:57,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385768444] [2023-12-02 17:53:57,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385768444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:57,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:57,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800724132] [2023-12-02 17:53:57,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:57,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:57,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:57,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:57,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:57,324 INFO L87 Difference]: Start difference. First operand 206 states and 239 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 17:53:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:57,363 INFO L93 Difference]: Finished difference Result 224 states and 257 transitions. [2023-12-02 17:53:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:57,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 36 [2023-12-02 17:53:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:57,364 INFO L225 Difference]: With dead ends: 224 [2023-12-02 17:53:57,364 INFO L226 Difference]: Without dead ends: 223 [2023-12-02 17:53:57,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 17:53:57,365 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 37 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:57,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 281 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:53:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-02 17:53:57,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 215. [2023-12-02 17:53:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 169 states have (on average 1.4437869822485208) internal successors, (244), 210 states have internal predecessors, (244), 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 17:53:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 250 transitions. [2023-12-02 17:53:57,371 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 250 transitions. Word has length 36 [2023-12-02 17:53:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:57,372 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 250 transitions. [2023-12-02 17:53:57,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 17:53:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 250 transitions. [2023-12-02 17:53:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 17:53:57,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:57,372 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, 1] [2023-12-02 17:53:57,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 17:53:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:57,573 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:57,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash 92820617, now seen corresponding path program 1 times [2023-12-02 17:53:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:57,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525913245] [2023-12-02 17:53:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:57,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:57,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551789478] [2023-12-02 17:53:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:57,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:57,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:57,580 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:57,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:53:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:57,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:57,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:57,651 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 17:53:57,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:57,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525913245] [2023-12-02 17:53:57,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:57,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551789478] [2023-12-02 17:53:57,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551789478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:57,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:57,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100563310] [2023-12-02 17:53:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:57,653 INFO L87 Difference]: Start difference. First operand 215 states and 250 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 17:53:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:57,687 INFO L93 Difference]: Finished difference Result 215 states and 250 transitions. [2023-12-02 17:53:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 36 [2023-12-02 17:53:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:57,689 INFO L225 Difference]: With dead ends: 215 [2023-12-02 17:53:57,689 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 17:53:57,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 17:53:57,690 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 74 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:57,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 178 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:53:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 17:53:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-12-02 17:53:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 169 states have (on average 1.4260355029585798) internal successors, (241), 208 states have internal predecessors, (241), 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 17:53:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 247 transitions. [2023-12-02 17:53:57,699 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 247 transitions. Word has length 36 [2023-12-02 17:53:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:57,699 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 247 transitions. [2023-12-02 17:53:57,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 17:53:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 247 transitions. [2023-12-02 17:53:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 17:53:57,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:57,700 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, 1, 1] [2023-12-02 17:53:57,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 17:53:57,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 17:53:57,901 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:57,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:57,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1417528049, now seen corresponding path program 1 times [2023-12-02 17:53:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:57,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42078566] [2023-12-02 17:53:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:57,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:57,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742431272] [2023-12-02 17:53:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:57,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:57,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:57,907 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:57,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 17:53:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:57,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:53:57,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:57,978 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 17:53:57,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:53:57,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42078566] [2023-12-02 17:53:57,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:57,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742431272] [2023-12-02 17:53:57,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742431272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:53:57,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:53:57,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:53:57,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760692923] [2023-12-02 17:53:57,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:53:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:53:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:53:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:53:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:53:57,980 INFO L87 Difference]: Start difference. First operand 213 states and 247 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (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 17:53:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:53:58,022 INFO L93 Difference]: Finished difference Result 254 states and 261 transitions. [2023-12-02 17:53:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:53:58,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (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 17:53:58,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:53:58,024 INFO L225 Difference]: With dead ends: 254 [2023-12-02 17:53:58,024 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 17:53:58,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 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 17:53:58,025 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 62 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:53:58,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 305 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:53:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 17:53:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 221. [2023-12-02 17:53:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 177 states have (on average 1.4124293785310735) internal successors, (250), 216 states have internal predecessors, (250), 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 17:53:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 256 transitions. [2023-12-02 17:53:58,036 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 256 transitions. Word has length 37 [2023-12-02 17:53:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:53:58,036 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 256 transitions. [2023-12-02 17:53:58,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (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 17:53:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 256 transitions. [2023-12-02 17:53:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 17:53:58,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:53:58,037 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:53:58,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 17:53:58,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 17:53:58,238 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:53:58,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:53:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1054118077, now seen corresponding path program 1 times [2023-12-02 17:53:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:53:58,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10416598] [2023-12-02 17:53:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:58,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:53:58,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:53:58,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298277465] [2023-12-02 17:53:58,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:53:58,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:53:58,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:53:58,245 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:53:58,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 17:53:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:53:58,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:53:58,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:53:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:53:58,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:53:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:53:58,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:53:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10416598] [2023-12-02 17:53:58,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:53:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298277465] [2023-12-02 17:53:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298277465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:53:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [708400977] [2023-12-02 17:53:58,771 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 17:53:58,771 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:53:58,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:53:58,780 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:53:58,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:54:04,562 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 142 for LOIs [2023-12-02 17:54:04,774 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:54:21,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [708400977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:21,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:54:21,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 5] total 24 [2023-12-02 17:54:21,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112754549] [2023-12-02 17:54:21,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:21,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 17:54:21,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 17:54:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=461, Unknown=1, NotChecked=0, Total=600 [2023-12-02 17:54:21,274 INFO L87 Difference]: Start difference. First operand 221 states and 256 transitions. Second operand has 17 states, 14 states have (on average 2.5) internal successors, (35), 14 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 17:54:24,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:27,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:31,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:33,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:35,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:37,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:42,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:43,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:51,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:54,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:54:58,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:01,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:05,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:07,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:10,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:12,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:15,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:18,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:55:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:55:22,817 INFO L93 Difference]: Finished difference Result 253 states and 259 transitions. [2023-12-02 17:55:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 17:55:22,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5) internal successors, (35), 14 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 38 [2023-12-02 17:55:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:55:22,819 INFO L225 Difference]: With dead ends: 253 [2023-12-02 17:55:22,819 INFO L226 Difference]: Without dead ends: 188 [2023-12-02 17:55:22,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 73 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=360, Invalid=1116, Unknown=6, NotChecked=0, Total=1482 [2023-12-02 17:55:22,821 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 250 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 37 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:55:22,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 130 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1010 Invalid, 14 Unknown, 0 Unchecked, 45.0s Time] [2023-12-02 17:55:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-02 17:55:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2023-12-02 17:55:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 135 states have (on average 1.3555555555555556) internal successors, (183), 174 states have internal predecessors, (183), 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 17:55:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 189 transitions. [2023-12-02 17:55:22,832 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 189 transitions. Word has length 38 [2023-12-02 17:55:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:55:22,832 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 189 transitions. [2023-12-02 17:55:22,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5) internal successors, (35), 14 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 17:55:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 189 transitions. [2023-12-02 17:55:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 17:55:22,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:55:22,833 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:55:22,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 17:55:23,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 17:55:23,033 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:55:23,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:55:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1843791087, now seen corresponding path program 1 times [2023-12-02 17:55:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:55:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496976434] [2023-12-02 17:55:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:55:23,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:55:23,038 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:55:23,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321487126] [2023-12-02 17:55:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:55:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:55:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:55:23,040 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:55:23,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:55:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:55:23,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:55:23,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:55:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:55:23,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:55:23,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:55:23,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496976434] [2023-12-02 17:55:23,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:55:23,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321487126] [2023-12-02 17:55:23,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321487126] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:55:23,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2054440803] [2023-12-02 17:55:23,805 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 17:55:23,805 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:55:23,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:55:23,805 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:55:23,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:55:27,150 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 17:55:27,211 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:56:03,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2054440803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:56:03,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:56:03,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 29 [2023-12-02 17:56:03,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395653020] [2023-12-02 17:56:03,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:56:03,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 17:56:03,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:56:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 17:56:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=984, Unknown=2, NotChecked=0, Total=1190 [2023-12-02 17:56:03,867 INFO L87 Difference]: Start difference. First operand 179 states and 189 transitions. Second operand has 25 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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 17:56:14,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:19,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:24,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:32,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:38,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:40,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:47,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:50,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:52,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:55,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:56:57,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:02,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:04,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:15,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:17,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:18,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:19,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:22,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:24,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:27,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:29,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:31,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:33,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:35,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:40,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:46,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:48,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:51,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 17:57:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:57:52,258 INFO L93 Difference]: Finished difference Result 286 states and 298 transitions. [2023-12-02 17:57:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 17:57:52,258 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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 42 [2023-12-02 17:57:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:57:52,260 INFO L225 Difference]: With dead ends: 286 [2023-12-02 17:57:52,260 INFO L226 Difference]: Without dead ends: 271 [2023-12-02 17:57:52,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 72.5s TimeCoverageRelationStatistics Valid=801, Invalid=3224, Unknown=7, NotChecked=0, Total=4032 [2023-12-02 17:57:52,263 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 414 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 37 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:57:52,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 125 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 893 Invalid, 21 Unknown, 0 Unchecked, 72.7s Time] [2023-12-02 17:57:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-02 17:57:52,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 224. [2023-12-02 17:57:52,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 179 states have (on average 1.3798882681564246) internal successors, (247), 218 states have internal predecessors, (247), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:57:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 255 transitions. [2023-12-02 17:57:52,273 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 255 transitions. Word has length 42 [2023-12-02 17:57:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:57:52,273 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 255 transitions. [2023-12-02 17:57:52,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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 17:57:52,274 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 255 transitions. [2023-12-02 17:57:52,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 17:57:52,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:57:52,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:57:52,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:57:52,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 17:57:52,475 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:57:52,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:57:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1938256943, now seen corresponding path program 1 times [2023-12-02 17:57:52,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:57:52,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512704878] [2023-12-02 17:57:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:52,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:57:52,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:57:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471063817] [2023-12-02 17:57:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:52,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:57:52,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:57:52,481 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:57:52,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 17:57:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:57:52,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 17:57:52,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:57:52,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:57:53,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:57:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512704878] [2023-12-02 17:57:53,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:57:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471063817] [2023-12-02 17:57:53,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471063817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:57:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [452194212] [2023-12-02 17:57:53,208 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 17:57:53,208 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:57:53,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:57:53,209 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:57:53,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:57:56,615 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 17:57:56,681 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:58:29,572 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13838#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775809) 0) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:58:29,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:58:29,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:58:29,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 17:58:29,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011348375] [2023-12-02 17:58:29,573 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 17:58:29,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:58:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:58:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:58:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=870, Unknown=2, NotChecked=0, Total=1122 [2023-12-02 17:58:29,575 INFO L87 Difference]: Start difference. First operand 224 states and 255 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 17:58:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:58:30,479 INFO L93 Difference]: Finished difference Result 236 states and 262 transitions. [2023-12-02 17:58:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:58:30,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 44 [2023-12-02 17:58:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:58:30,481 INFO L225 Difference]: With dead ends: 236 [2023-12-02 17:58:30,481 INFO L226 Difference]: Without dead ends: 234 [2023-12-02 17:58:30,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 61 SyntacticMatches, 12 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=302, Invalid=1178, Unknown=2, NotChecked=0, Total=1482 [2023-12-02 17:58:30,483 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 191 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:58:30,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 261 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 17:58:30,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-02 17:58:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 222. [2023-12-02 17:58:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 179 states have (on average 1.3631284916201116) internal successors, (244), 216 states have internal predecessors, (244), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:58:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 252 transitions. [2023-12-02 17:58:30,496 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 252 transitions. Word has length 44 [2023-12-02 17:58:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:58:30,496 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 252 transitions. [2023-12-02 17:58:30,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 17:58:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 252 transitions. [2023-12-02 17:58:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 17:58:30,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:58:30,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:58:30,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-02 17:58:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 17:58:30,697 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:58:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:58:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash 43576968, now seen corresponding path program 1 times [2023-12-02 17:58:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:58:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33406358] [2023-12-02 17:58:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:58:30,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:58:30,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974379616] [2023-12-02 17:58:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:58:30,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:58:30,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:58:30,704 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:58:30,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 17:58:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:58:30,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:58:30,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:58:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:58:31,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:58:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:58:32,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:58:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33406358] [2023-12-02 17:58:32,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:58:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974379616] [2023-12-02 17:58:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974379616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:58:32,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [72861857] [2023-12-02 17:58:32,120 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 17:58:32,120 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:58:32,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:58:32,120 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:58:32,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:58:35,601 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 17:58:35,683 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:06,000 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14622#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:59:06,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:59:06,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:59:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 17:59:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033678106] [2023-12-02 17:59:06,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:59:06,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:59:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:59:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=874, Unknown=1, NotChecked=0, Total=1122 [2023-12-02 17:59:06,002 INFO L87 Difference]: Start difference. First operand 222 states and 252 transitions. Second operand has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 10 states have internal predecessors, (85), 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 17:59:12,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:59:12,308 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2023-12-02 17:59:12,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:59:12,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 10 states have internal predecessors, (85), 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 45 [2023-12-02 17:59:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:59:12,310 INFO L225 Difference]: With dead ends: 391 [2023-12-02 17:59:12,310 INFO L226 Difference]: Without dead ends: 389 [2023-12-02 17:59:12,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=284, Invalid=1047, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 17:59:12,311 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 462 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:59:12,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 389 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-02 17:59:12,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-02 17:59:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 343. [2023-12-02 17:59:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 298 states have (on average 1.4093959731543624) internal successors, (420), 335 states have internal predecessors, (420), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 17:59:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 432 transitions. [2023-12-02 17:59:12,327 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 432 transitions. Word has length 45 [2023-12-02 17:59:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:59:12,327 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 432 transitions. [2023-12-02 17:59:12,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.444444444444445) internal successors, (85), 10 states have internal predecessors, (85), 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 17:59:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 432 transitions. [2023-12-02 17:59:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 17:59:12,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:59:12,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:59:12,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 17:59:12,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 17:59:12,528 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 17:59:12,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:59:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2097059417, now seen corresponding path program 1 times [2023-12-02 17:59:12,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:59:12,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129348891] [2023-12-02 17:59:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:12,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:59:12,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:59:12,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406977195] [2023-12-02 17:59:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:59:12,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:59:12,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:59:12,534 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:59:12,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 17:59:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:59:12,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 17:59:12,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:59:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:59:13,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:59:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:59:15,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:59:15,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129348891] [2023-12-02 17:59:15,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:59:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406977195] [2023-12-02 17:59:15,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406977195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:59:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [31932013] [2023-12-02 17:59:15,208 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 17:59:15,208 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:59:15,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:59:15,209 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:59:15,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:59:17,925 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 142 for LOIs [2023-12-02 17:59:18,047 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:59:47,314 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15712#(and (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (exists ((|v_ULTIMATE.start_main_~xy~0#1_80| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (= |ULTIMATE.start_main_~y~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~X~0#1| 1)) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (= |v_ULTIMATE.start_main_~xy~0#1_80| 0) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 17:59:47,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:59:47,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:59:47,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 17:59:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465945486] [2023-12-02 17:59:47,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:59:47,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 17:59:47,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:59:47,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 17:59:47,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=716, Unknown=4, NotChecked=0, Total=870 [2023-12-02 17:59:47,316 INFO L87 Difference]: Start difference. First operand 343 states and 432 transitions. Second operand has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 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 18:00:07,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 18:00:30,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 18:00:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:00:30,217 INFO L93 Difference]: Finished difference Result 442 states and 536 transitions. [2023-12-02 18:00:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:00:30,218 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 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 48 [2023-12-02 18:00:30,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:00:30,221 INFO L225 Difference]: With dead ends: 442 [2023-12-02 18:00:30,221 INFO L226 Difference]: Without dead ends: 440 [2023-12-02 18:00:30,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 91 SyntacticMatches, 23 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=280, Invalid=1276, Unknown=4, NotChecked=0, Total=1560 [2023-12-02 18:00:30,222 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 738 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:00:30,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 257 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 905 Invalid, 1 Unknown, 0 Unchecked, 38.5s Time] [2023-12-02 18:00:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-02 18:00:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 388. [2023-12-02 18:00:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 342 states have (on average 1.3654970760233918) internal successors, (467), 379 states have internal predecessors, (467), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:00:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 481 transitions. [2023-12-02 18:00:30,254 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 481 transitions. Word has length 48 [2023-12-02 18:00:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:00:30,254 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 481 transitions. [2023-12-02 18:00:30,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 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 18:00:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 481 transitions. [2023-12-02 18:00:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 18:00:30,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:00:30,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:00:30,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 18:00:30,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:00:30,455 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:00:30,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:00:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1121388949, now seen corresponding path program 1 times [2023-12-02 18:00:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:00:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829200872] [2023-12-02 18:00:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:00:30,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:00:30,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132428738] [2023-12-02 18:00:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:00:30,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:00:30,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:00:30,462 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:00:30,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 18:00:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:00:30,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:00:30,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:00:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:00:30,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:00:31,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:00:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829200872] [2023-12-02 18:00:31,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:00:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132428738] [2023-12-02 18:00:31,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132428738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:00:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1892835944] [2023-12-02 18:00:31,782 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:00:31,782 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:00:31,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:00:31,782 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:00:31,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:00:35,079 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:00:35,138 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:00:59,884 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16836#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= 0 (+ (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775808)) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:00:59,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:00:59,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:00:59,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 18:00:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057902290] [2023-12-02 18:00:59,884 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:00:59,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:00:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:00:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:00:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=982, Unknown=1, NotChecked=0, Total=1260 [2023-12-02 18:00:59,885 INFO L87 Difference]: Start difference. First operand 388 states and 481 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 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 18:01:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:01,310 INFO L93 Difference]: Finished difference Result 393 states and 481 transitions. [2023-12-02 18:01:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:01:01,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 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 48 [2023-12-02 18:01:01,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:01,312 INFO L225 Difference]: With dead ends: 393 [2023-12-02 18:01:01,312 INFO L226 Difference]: Without dead ends: 391 [2023-12-02 18:01:01,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 69 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=374, Invalid=1517, Unknown=1, NotChecked=0, Total=1892 [2023-12-02 18:01:01,313 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 335 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:01,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 270 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:01:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-02 18:01:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 386. [2023-12-02 18:01:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 342 states have (on average 1.347953216374269) internal successors, (461), 377 states have internal predecessors, (461), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:01:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 475 transitions. [2023-12-02 18:01:01,333 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 475 transitions. Word has length 48 [2023-12-02 18:01:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:01,333 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 475 transitions. [2023-12-02 18:01:01,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 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 18:01:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 475 transitions. [2023-12-02 18:01:01,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 18:01:01,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:01,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:01,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-02 18:01:01,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:01,534 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:01,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash 403319116, now seen corresponding path program 1 times [2023-12-02 18:01:01,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:01,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443645796] [2023-12-02 18:01:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:01,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:01,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050222376] [2023-12-02 18:01:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:01,541 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:01,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 18:01:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:01,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 18:01:01,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:01:02,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:01:04,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:04,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443645796] [2023-12-02 18:01:04,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050222376] [2023-12-02 18:01:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050222376] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:01:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [872990039] [2023-12-02 18:01:04,117 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:01:04,117 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:04,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:04,117 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:04,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:01:07,326 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:01:07,396 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:01:30,090 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17994#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:01:30,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:01:30,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:01:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-02 18:01:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683120838] [2023-12-02 18:01:30,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:01:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 18:01:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:01:30,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 18:01:30,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1212, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 18:01:30,092 INFO L87 Difference]: Start difference. First operand 386 states and 475 transitions. Second operand has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 14 states have internal predecessors, (93), 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 18:01:40,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 18:01:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:01:44,378 INFO L93 Difference]: Finished difference Result 571 states and 643 transitions. [2023-12-02 18:01:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:01:44,379 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 14 states have internal predecessors, (93), 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 49 [2023-12-02 18:01:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:01:44,381 INFO L225 Difference]: With dead ends: 571 [2023-12-02 18:01:44,382 INFO L226 Difference]: Without dead ends: 570 [2023-12-02 18:01:44,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 94 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=436, Invalid=2014, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 18:01:44,383 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 787 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:01:44,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 421 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-12-02 18:01:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-02 18:01:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 435. [2023-12-02 18:01:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 389 states have (on average 1.3676092544987146) internal successors, (532), 424 states have internal predecessors, (532), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:01:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 550 transitions. [2023-12-02 18:01:44,419 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 550 transitions. Word has length 49 [2023-12-02 18:01:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:01:44,419 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 550 transitions. [2023-12-02 18:01:44,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 14 states have internal predecessors, (93), 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 18:01:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 550 transitions. [2023-12-02 18:01:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 18:01:44,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:01:44,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:01:44,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 18:01:44,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 18:01:44,620 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:01:44,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:01:44,621 INFO L85 PathProgramCache]: Analyzing trace with hash -382009225, now seen corresponding path program 1 times [2023-12-02 18:01:44,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:01:44,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141747725] [2023-12-02 18:01:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:44,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:01:44,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:01:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991866735] [2023-12-02 18:01:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:01:44,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:01:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:01:44,628 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:01:44,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 18:01:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:01:44,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:01:44,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:01:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:01:45,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:01:45,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:01:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141747725] [2023-12-02 18:01:45,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:01:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991866735] [2023-12-02 18:01:45,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991866735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:01:45,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1401754237] [2023-12-02 18:01:45,890 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:01:45,890 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:01:45,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:01:45,890 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:01:45,890 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:01:49,080 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:01:49,134 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:02:18,814 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19324#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387905) |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:02:18,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:02:18,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:02:18,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 18:02:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312722688] [2023-12-02 18:02:18,815 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:02:18,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:02:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:02:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1345, Unknown=1, NotChecked=0, Total=1560 [2023-12-02 18:02:18,816 INFO L87 Difference]: Start difference. First operand 435 states and 550 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 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 18:02:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:21,508 INFO L93 Difference]: Finished difference Result 624 states and 795 transitions. [2023-12-02 18:02:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:02:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 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 50 [2023-12-02 18:02:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:21,511 INFO L225 Difference]: With dead ends: 624 [2023-12-02 18:02:21,511 INFO L226 Difference]: Without dead ends: 618 [2023-12-02 18:02:21,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 71 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=275, Invalid=1794, Unknown=1, NotChecked=0, Total=2070 [2023-12-02 18:02:21,513 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 262 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:21,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 271 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 18:02:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-02 18:02:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 564. [2023-12-02 18:02:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 515 states have (on average 1.3786407766990292) internal successors, (710), 550 states have internal predecessors, (710), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:02:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 734 transitions. [2023-12-02 18:02:21,543 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 734 transitions. Word has length 50 [2023-12-02 18:02:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:21,543 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 734 transitions. [2023-12-02 18:02:21,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 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 18:02:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 734 transitions. [2023-12-02 18:02:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 18:02:21,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:21,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:02:21,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 18:02:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:21,745 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:02:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1042615982, now seen corresponding path program 1 times [2023-12-02 18:02:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:02:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167916243] [2023-12-02 18:02:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:02:21,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:02:21,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920528056] [2023-12-02 18:02:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:21,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:02:21,751 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:02:21,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 18:02:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:21,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:02:21,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:02:22,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:22,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:02:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167916243] [2023-12-02 18:02:22,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:02:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920528056] [2023-12-02 18:02:22,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920528056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:02:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179876463] [2023-12-02 18:02:22,911 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:02:22,911 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:02:22,911 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:02:22,911 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:02:22,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:02:26,411 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:02:26,472 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:02:55,095 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20843#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) |ULTIMATE.start_main_~yx~0#1|) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:02:55,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:02:55,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:02:55,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 18:02:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250705763] [2023-12-02 18:02:55,096 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:02:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:02:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:02:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:02:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:02:55,098 INFO L87 Difference]: Start difference. First operand 564 states and 734 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 18:02:57,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:02:57,168 INFO L93 Difference]: Finished difference Result 569 states and 734 transitions. [2023-12-02 18:02:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:02:57,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 51 [2023-12-02 18:02:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:02:57,171 INFO L225 Difference]: With dead ends: 569 [2023-12-02 18:02:57,171 INFO L226 Difference]: Without dead ends: 565 [2023-12-02 18:02:57,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 76 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=421, Invalid=1931, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 18:02:57,173 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 315 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:02:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 295 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 18:02:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-02 18:02:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 548. [2023-12-02 18:02:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 503 states have (on average 1.3359840954274353) internal successors, (672), 534 states have internal predecessors, (672), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:02:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 696 transitions. [2023-12-02 18:02:57,207 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 696 transitions. Word has length 51 [2023-12-02 18:02:57,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:02:57,207 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 696 transitions. [2023-12-02 18:02:57,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 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 18:02:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 696 transitions. [2023-12-02 18:02:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 18:02:57,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:02:57,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:02:57,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 18:02:57,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 18:02:57,408 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:02:57,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:02:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2038642855, now seen corresponding path program 1 times [2023-12-02 18:02:57,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:02:57,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444859316] [2023-12-02 18:02:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:57,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:02:57,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:02:57,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700336517] [2023-12-02 18:02:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:02:57,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:02:57,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:02:57,415 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:02:57,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 18:02:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:02:57,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:02:57,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:02:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:02:58,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:02:59,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:02:59,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444859316] [2023-12-02 18:02:59,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:02:59,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700336517] [2023-12-02 18:02:59,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700336517] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:02:59,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491370358] [2023-12-02 18:02:59,037 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:02:59,037 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:02:59,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:02:59,038 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:02:59,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:03:02,346 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:03:02,398 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:03:24,670 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22309#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809) (+ |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= |ULTIMATE.start_main_~xy~0#1| (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:03:24,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:03:24,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:03:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 18:03:24,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716099866] [2023-12-02 18:03:24,671 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:03:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:03:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:03:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:03:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 18:03:24,673 INFO L87 Difference]: Start difference. First operand 548 states and 696 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 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 18:03:30,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:03:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:03:31,146 INFO L93 Difference]: Finished difference Result 598 states and 732 transitions. [2023-12-02 18:03:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:03:31,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 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 52 [2023-12-02 18:03:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:03:31,149 INFO L225 Difference]: With dead ends: 598 [2023-12-02 18:03:31,149 INFO L226 Difference]: Without dead ends: 594 [2023-12-02 18:03:31,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 77 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=288, Invalid=1781, Unknown=1, NotChecked=0, Total=2070 [2023-12-02 18:03:31,150 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 284 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:03:31,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 207 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 579 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 18:03:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2023-12-02 18:03:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 560. [2023-12-02 18:03:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 515 states have (on average 1.3048543689320389) internal successors, (672), 546 states have internal predecessors, (672), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:03:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 696 transitions. [2023-12-02 18:03:31,198 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 696 transitions. Word has length 52 [2023-12-02 18:03:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:03:31,198 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 696 transitions. [2023-12-02 18:03:31,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 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 18:03:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 696 transitions. [2023-12-02 18:03:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 18:03:31,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:03:31,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:03:31,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 18:03:31,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 18:03:31,399 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:03:31,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:03:31,400 INFO L85 PathProgramCache]: Analyzing trace with hash 53431848, now seen corresponding path program 1 times [2023-12-02 18:03:31,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:03:31,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429063823] [2023-12-02 18:03:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:03:31,405 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:03:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292810212] [2023-12-02 18:03:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:03:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:03:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:03:31,407 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:03:31,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 18:03:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:03:31,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 18:03:31,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:03:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:03:32,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:03:33,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:03:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429063823] [2023-12-02 18:03:33,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:03:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292810212] [2023-12-02 18:03:33,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292810212] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:03:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1501419018] [2023-12-02 18:03:33,868 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 18:03:33,868 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:03:33,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:03:33,869 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:03:33,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:03:36,533 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 142 for LOIs [2023-12-02 18:03:36,722 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:04:03,301 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23825#(and (exists ((|v_ULTIMATE.start_main_~xy~0#1_108| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |v_ULTIMATE.start_main_~xy~0#1_108| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~X~0#1| 1)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:04:03,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:04:03,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:03,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 18:04:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424442223] [2023-12-02 18:04:03,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:04:03,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:04:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:04:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=907, Unknown=4, NotChecked=0, Total=1056 [2023-12-02 18:04:03,302 INFO L87 Difference]: Start difference. First operand 560 states and 696 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 18:04:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:05,950 INFO L93 Difference]: Finished difference Result 569 states and 703 transitions. [2023-12-02 18:04:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:04:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 55 [2023-12-02 18:04:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:05,953 INFO L225 Difference]: With dead ends: 569 [2023-12-02 18:04:05,953 INFO L226 Difference]: Without dead ends: 568 [2023-12-02 18:04:05,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 79 SyntacticMatches, 28 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=193, Invalid=1135, Unknown=4, NotChecked=0, Total=1332 [2023-12-02 18:04:05,954 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 191 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:05,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 165 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:04:05,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-12-02 18:04:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 560. [2023-12-02 18:04:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 515 states have (on average 1.3029126213592233) internal successors, (671), 546 states have internal predecessors, (671), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:04:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 695 transitions. [2023-12-02 18:04:05,989 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 695 transitions. Word has length 55 [2023-12-02 18:04:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:05,989 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 695 transitions. [2023-12-02 18:04:05,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 18:04:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 695 transitions. [2023-12-02 18:04:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 18:04:05,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:05,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:05,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 18:04:06,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 18:04:06,191 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:04:06,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:06,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1466883796, now seen corresponding path program 1 times [2023-12-02 18:04:06,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:06,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816712339] [2023-12-02 18:04:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:06,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:06,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:04:06,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91894709] [2023-12-02 18:04:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:06,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:06,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:06,197 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:06,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 18:04:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:06,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:04:06,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:04:07,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:04:10,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816712339] [2023-12-02 18:04:10,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:04:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91894709] [2023-12-02 18:04:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91894709] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:04:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1337897082] [2023-12-02 18:04:10,225 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:04:10,225 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:04:10,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:04:10,225 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:04:10,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:04:13,651 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:04:13,718 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:04:49,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25314#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~xy~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= (+ 9223372036854775808 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= (* 2 |ULTIMATE.start_main_~yx~0#1|) (+ 9223372036854775807 |ULTIMATE.start_main_~X~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:04:49,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:04:49,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:04:49,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 18:04:49,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84361499] [2023-12-02 18:04:49,731 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:04:49,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:04:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:04:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:04:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1512, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 18:04:49,732 INFO L87 Difference]: Start difference. First operand 560 states and 695 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 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 18:04:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:04:52,709 INFO L93 Difference]: Finished difference Result 597 states and 725 transitions. [2023-12-02 18:04:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:04:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 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 57 [2023-12-02 18:04:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:04:52,712 INFO L225 Difference]: With dead ends: 597 [2023-12-02 18:04:52,712 INFO L226 Difference]: Without dead ends: 596 [2023-12-02 18:04:52,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 87 SyntacticMatches, 16 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=348, Invalid=1908, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 18:04:52,713 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 317 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:04:52,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 217 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 18:04:52,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-12-02 18:04:52,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 560. [2023-12-02 18:04:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 515 states have (on average 1.3009708737864079) internal successors, (670), 546 states have internal predecessors, (670), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:04:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 694 transitions. [2023-12-02 18:04:52,764 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 694 transitions. Word has length 57 [2023-12-02 18:04:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:04:52,765 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 694 transitions. [2023-12-02 18:04:52,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 11 states have internal predecessors, (55), 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 18:04:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 694 transitions. [2023-12-02 18:04:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 18:04:52,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:04:52,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:04:52,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 18:04:52,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 18:04:52,966 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:04:52,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:04:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1771242497, now seen corresponding path program 1 times [2023-12-02 18:04:52,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:04:52,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937232336] [2023-12-02 18:04:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:52,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:04:52,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:04:52,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631504950] [2023-12-02 18:04:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:04:52,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:04:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:04:52,973 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:04:52,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 18:04:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:04:53,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 18:04:53,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:04:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:04:53,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:04:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:04:56,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:04:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937232336] [2023-12-02 18:04:56,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:04:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631504950] [2023-12-02 18:04:56,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631504950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:04:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1684705617] [2023-12-02 18:04:56,337 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:04:56,337 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:04:56,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:04:56,339 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:04:56,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:04:59,849 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:04:59,902 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:05:35,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26921#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483648) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~xy~0#1| 4611686018427387904)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~yx~0#1| 4611686016279904256) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) 9223372036854775809 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|))) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~v~0#1| 8589934590)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807))' at error location [2023-12-02 18:05:35,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:05:35,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:05:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-02 18:05:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899787983] [2023-12-02 18:05:35,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:05:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 18:05:35,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:05:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 18:05:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1437, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 18:05:35,823 INFO L87 Difference]: Start difference. First operand 560 states and 694 transitions. Second operand has 17 states, 15 states have (on average 7.133333333333334) internal successors, (107), 17 states have internal predecessors, (107), 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 18:05:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:05:42,016 INFO L93 Difference]: Finished difference Result 588 states and 717 transitions. [2023-12-02 18:05:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 18:05:42,016 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 7.133333333333334) internal successors, (107), 17 states have internal predecessors, (107), 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 58 [2023-12-02 18:05:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:05:42,019 INFO L225 Difference]: With dead ends: 588 [2023-12-02 18:05:42,019 INFO L226 Difference]: Without dead ends: 584 [2023-12-02 18:05:42,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 117 SyntacticMatches, 16 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=361, Invalid=2945, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 18:05:42,020 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 518 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:05:42,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 86 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-02 18:05:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-02 18:05:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 574. [2023-12-02 18:05:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 530 states have (on average 1.2792452830188679) internal successors, (678), 560 states have internal predecessors, (678), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:05:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 702 transitions. [2023-12-02 18:05:42,054 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 702 transitions. Word has length 58 [2023-12-02 18:05:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:05:42,055 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 702 transitions. [2023-12-02 18:05:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 7.133333333333334) internal successors, (107), 17 states have internal predecessors, (107), 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 18:05:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 702 transitions. [2023-12-02 18:05:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 18:05:42,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:05:42,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:05:42,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 18:05:42,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:05:42,258 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:05:42,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:05:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash 689249971, now seen corresponding path program 1 times [2023-12-02 18:05:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:05:42,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541157554] [2023-12-02 18:05:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:05:42,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:05:42,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815365020] [2023-12-02 18:05:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:42,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:05:42,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:05:42,267 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:05:42,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 18:05:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:05:42,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:05:42,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:05:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:05:42,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:05:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:05:43,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:05:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541157554] [2023-12-02 18:05:43,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:05:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815365020] [2023-12-02 18:05:43,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815365020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:05:43,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [147648973] [2023-12-02 18:05:43,180 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 18:05:43,181 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:05:43,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:05:43,181 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:05:43,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:05:45,996 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 142 for LOIs [2023-12-02 18:05:46,116 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:05:57,981 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28578#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= (+ 9223372036854775809 |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~Y~0#1|)) 0) (= |ULTIMATE.start_main_~xy~0#1| 0) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (= |ULTIMATE.start_main_~y~0#1| 0) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647))' at error location [2023-12-02 18:05:57,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:05:57,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:05:57,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 18:05:57,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646755379] [2023-12-02 18:05:57,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:05:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:05:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:05:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:05:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-12-02 18:05:57,983 INFO L87 Difference]: Start difference. First operand 574 states and 702 transitions. Second operand has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:05:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:05:59,293 INFO L93 Difference]: Finished difference Result 819 states and 976 transitions. [2023-12-02 18:05:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:05:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2023-12-02 18:05:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:05:59,297 INFO L225 Difference]: With dead ends: 819 [2023-12-02 18:05:59,298 INFO L226 Difference]: Without dead ends: 817 [2023-12-02 18:05:59,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 137 SyntacticMatches, 28 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2023-12-02 18:05:59,299 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 435 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:05:59,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 211 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:05:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-02 18:05:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 710. [2023-12-02 18:05:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 661 states have (on average 1.2798789712556733) internal successors, (846), 691 states have internal predecessors, (846), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 18:05:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 880 transitions. [2023-12-02 18:05:59,364 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 880 transitions. Word has length 63 [2023-12-02 18:05:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:05:59,365 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 880 transitions. [2023-12-02 18:05:59,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:05:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 880 transitions. [2023-12-02 18:05:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 18:05:59,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:05:59,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:05:59,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 18:05:59,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 18:05:59,566 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:05:59,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:05:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash 337085905, now seen corresponding path program 1 times [2023-12-02 18:05:59,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:05:59,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866764808] [2023-12-02 18:05:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:59,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:05:59,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:05:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669792087] [2023-12-02 18:05:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:05:59,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:05:59,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:05:59,574 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:05:59,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 18:05:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:05:59,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:05:59,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:06:00,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:06:01,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:06:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866764808] [2023-12-02 18:06:01,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:06:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669792087] [2023-12-02 18:06:01,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669792087] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:01,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [559930282] [2023-12-02 18:06:01,346 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:06:01,346 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:06:01,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:06:01,346 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:06:01,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:06:04,505 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:06:04,563 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:06:25,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30635#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= (+ 9223372036854775808 (* 2 |ULTIMATE.start_main_~X~0#1|)) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 |ULTIMATE.start_main_~xy~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647))' at error location [2023-12-02 18:06:25,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:06:25,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:06:25,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 18:06:25,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618610415] [2023-12-02 18:06:25,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:06:25,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:06:25,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:06:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:06:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:06:25,491 INFO L87 Difference]: Start difference. First operand 710 states and 880 transitions. Second operand has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:06:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:28,379 INFO L93 Difference]: Finished difference Result 789 states and 954 transitions. [2023-12-02 18:06:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 18:06:28,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 70 [2023-12-02 18:06:28,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:28,383 INFO L225 Difference]: With dead ends: 789 [2023-12-02 18:06:28,383 INFO L226 Difference]: Without dead ends: 788 [2023-12-02 18:06:28,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 151 SyntacticMatches, 21 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=377, Invalid=1785, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 18:06:28,384 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 481 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:28,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 358 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 18:06:28,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-02 18:06:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 722. [2023-12-02 18:06:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 673 states have (on average 1.274888558692422) internal successors, (858), 703 states have internal predecessors, (858), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 18:06:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 892 transitions. [2023-12-02 18:06:28,430 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 892 transitions. Word has length 70 [2023-12-02 18:06:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:28,430 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 892 transitions. [2023-12-02 18:06:28,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.923076923076923) internal successors, (129), 14 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:06:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 892 transitions. [2023-12-02 18:06:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 18:06:28,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:28,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:06:28,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 18:06:28,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 18:06:28,632 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:06:28,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:28,632 INFO L85 PathProgramCache]: Analyzing trace with hash 906909243, now seen corresponding path program 1 times [2023-12-02 18:06:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:06:28,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122132580] [2023-12-02 18:06:28,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:28,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:06:28,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:06:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700233961] [2023-12-02 18:06:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:28,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:06:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:06:28,638 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:06:28,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 18:06:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:28,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:06:28,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:06:28,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:06:29,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:06:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122132580] [2023-12-02 18:06:29,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:06:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700233961] [2023-12-02 18:06:29,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700233961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1185536566] [2023-12-02 18:06:29,282 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-12-02 18:06:29,282 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:06:29,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:06:29,283 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:06:29,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:06:33,985 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 126 for LOIs [2023-12-02 18:06:34,033 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:06:48,232 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32692#(and (<= 9223372036854775807 |ULTIMATE.start_main_#t~post7#1|) (= |ULTIMATE.start_main_#t~post7#1| |ULTIMATE.start_main_~x~0#1|) (or (and (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|))) (and (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775805) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))) (or (and (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 4611686018427387903) (<= (+ |ULTIMATE.start_main_~v~0#1| 1) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= (* 2 |ULTIMATE.start_main_~Y~0#1|) (+ |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|))) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~X~0#1| (+ |ULTIMATE.start_main_~Y~0#1| 4611686018427387904)))))' at error location [2023-12-02 18:06:48,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:06:48,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:06:48,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 18:06:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886953654] [2023-12-02 18:06:48,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:06:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:06:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:06:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:06:48,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1867, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 18:06:48,235 INFO L87 Difference]: Start difference. First operand 722 states and 892 transitions. Second operand has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 10 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:06:48,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:06:48,782 INFO L93 Difference]: Finished difference Result 1165 states and 1410 transitions. [2023-12-02 18:06:48,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:06:48,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 10 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 71 [2023-12-02 18:06:48,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:06:48,788 INFO L225 Difference]: With dead ends: 1165 [2023-12-02 18:06:48,789 INFO L226 Difference]: Without dead ends: 1164 [2023-12-02 18:06:48,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=329, Invalid=2221, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 18:06:48,790 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 218 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:06:48,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 444 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:06:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-12-02 18:06:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 950. [2023-12-02 18:06:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 896 states have (on average 1.2734375) internal successors, (1141), 926 states have internal predecessors, (1141), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 18:06:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1185 transitions. [2023-12-02 18:06:48,855 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1185 transitions. Word has length 71 [2023-12-02 18:06:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:06:48,855 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1185 transitions. [2023-12-02 18:06:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 10 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:06:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1185 transitions. [2023-12-02 18:06:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 18:06:48,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:06:48,857 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, 1, 1, 1, 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 18:06:48,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 18:06:49,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:06:49,057 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:06:49,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:06:49,057 INFO L85 PathProgramCache]: Analyzing trace with hash -17542077, now seen corresponding path program 1 times [2023-12-02 18:06:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:06:49,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485658089] [2023-12-02 18:06:49,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:49,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:06:49,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:06:49,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262714197] [2023-12-02 18:06:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:06:49,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:06:49,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:06:49,067 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:06:49,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 18:06:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:06:49,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:06:49,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:06:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:06:49,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:06:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:06:50,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:06:50,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485658089] [2023-12-02 18:06:50,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:06:50,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262714197] [2023-12-02 18:06:50,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262714197] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:06:50,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033157799] [2023-12-02 18:06:50,125 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-12-02 18:06:50,125 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:06:50,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:06:50,125 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:06:50,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:06:53,420 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 127 for LOIs [2023-12-02 18:06:53,473 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:07:23,852 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35380#(and (<= 1 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_main_~X~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 4611686018427387904 |ULTIMATE.start_main_~xy~0#1|) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 2147483648)) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 0 (+ |ULTIMATE.start_main_~yx~0#1| 4611686018427387904)) (<= 0 (+ |ULTIMATE.start_main_~X~0#1| 2147483648)) (<= |ULTIMATE.start_main_~Y~0#1| 2147483647) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~yx~0#1| 4611686018427387903) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|))' at error location [2023-12-02 18:07:23,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:07:23,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:07:23,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 18:07:23,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177158938] [2023-12-02 18:07:23,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:07:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:07:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:07:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:07:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1652, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 18:07:23,854 INFO L87 Difference]: Start difference. First operand 950 states and 1185 transitions. Second operand has 14 states, 13 states have (on average 9.76923076923077) internal successors, (127), 14 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:07:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:07:26,440 INFO L93 Difference]: Finished difference Result 1018 states and 1245 transitions. [2023-12-02 18:07:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 18:07:26,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.76923076923077) internal successors, (127), 14 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 71 [2023-12-02 18:07:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:07:26,446 INFO L225 Difference]: With dead ends: 1018 [2023-12-02 18:07:26,446 INFO L226 Difference]: Without dead ends: 1015 [2023-12-02 18:07:26,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 151 SyntacticMatches, 18 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=377, Invalid=2815, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:07:26,447 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 509 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:07:26,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 543 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 18:07:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-12-02 18:07:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 966. [2023-12-02 18:07:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 912 states have (on average 1.268640350877193) internal successors, (1157), 942 states have internal predecessors, (1157), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 18:07:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1201 transitions. [2023-12-02 18:07:26,506 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1201 transitions. Word has length 71 [2023-12-02 18:07:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:07:26,506 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1201 transitions. [2023-12-02 18:07:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.76923076923077) internal successors, (127), 14 states have internal predecessors, (127), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 18:07:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1201 transitions. [2023-12-02 18:07:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 18:07:26,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:07:26,507 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:07:26,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 18:07:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:26,707 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:07:26,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:07:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -338576995, now seen corresponding path program 1 times [2023-12-02 18:07:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:07:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151622030] [2023-12-02 18:07:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:07:26,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:07:26,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53455899] [2023-12-02 18:07:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:26,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:26,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:07:26,714 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:07:26,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 18:07:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:07:26,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:07:26,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:07:27,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:28,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:07:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151622030] [2023-12-02 18:07:28,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:07:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53455899] [2023-12-02 18:07:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53455899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:07:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1035111575] [2023-12-02 18:07:28,017 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-12-02 18:07:28,017 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:07:28,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:07:28,017 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:07:28,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:07:32,623 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 126 for LOIs [2023-12-02 18:07:32,670 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:07:50,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37793#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= (+ (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 9223372036854775809) 0) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:07:50,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:07:50,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:07:50,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 18:07:50,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928700912] [2023-12-02 18:07:50,184 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:07:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:07:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:07:50,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:07:50,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2317, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 18:07:50,187 INFO L87 Difference]: Start difference. First operand 966 states and 1201 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 11 states have internal predecessors, (68), 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 18:07:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:07:52,851 INFO L93 Difference]: Finished difference Result 1164 states and 1423 transitions. [2023-12-02 18:07:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 18:07:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 11 states have internal predecessors, (68), 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 73 [2023-12-02 18:07:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:07:52,856 INFO L225 Difference]: With dead ends: 1164 [2023-12-02 18:07:52,856 INFO L226 Difference]: Without dead ends: 1162 [2023-12-02 18:07:52,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=438, Invalid=3222, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 18:07:52,857 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 259 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:07:52,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 690 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:07:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2023-12-02 18:07:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 964. [2023-12-02 18:07:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 912 states have (on average 1.2576754385964912) internal successors, (1147), 940 states have internal predecessors, (1147), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 18:07:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1191 transitions. [2023-12-02 18:07:52,919 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1191 transitions. Word has length 73 [2023-12-02 18:07:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:07:52,919 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1191 transitions. [2023-12-02 18:07:52,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 11 states have internal predecessors, (68), 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 18:07:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1191 transitions. [2023-12-02 18:07:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:07:52,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:07:52,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:07:52,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 18:07:53,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:53,120 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:07:53,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:07:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1905952200, now seen corresponding path program 1 times [2023-12-02 18:07:53,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:07:53,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581750067] [2023-12-02 18:07:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:07:53,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:07:53,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626951629] [2023-12-02 18:07:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:07:53,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:07:53,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:07:53,127 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:07:53,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 18:07:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:07:53,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 18:07:53,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:07:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:07:54,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:07:55,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:07:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581750067] [2023-12-02 18:07:55,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:07:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626951629] [2023-12-02 18:07:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626951629] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:07:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079327800] [2023-12-02 18:07:55,001 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-12-02 18:07:55,002 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:07:55,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:07:55,002 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:07:55,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:07:59,771 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 126 for LOIs [2023-12-02 18:07:59,825 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:08:13,022 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40360#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:08:13,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:08:13,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:08:13,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 18:08:13,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804610108] [2023-12-02 18:08:13,023 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:08:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:08:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:08:13,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:08:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2316, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 18:08:13,024 INFO L87 Difference]: Start difference. First operand 964 states and 1191 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 11 states have internal predecessors, (69), 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 18:08:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:08:14,788 INFO L93 Difference]: Finished difference Result 1010 states and 1225 transitions. [2023-12-02 18:08:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:08:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 11 states have internal predecessors, (69), 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 74 [2023-12-02 18:08:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:08:14,792 INFO L225 Difference]: With dead ends: 1010 [2023-12-02 18:08:14,792 INFO L226 Difference]: Without dead ends: 1008 [2023-12-02 18:08:14,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=363, Invalid=2607, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 18:08:14,793 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 213 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:08:14,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 540 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 18:08:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-02 18:08:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 968. [2023-12-02 18:08:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 916 states have (on average 1.2565502183406114) internal successors, (1151), 944 states have internal predecessors, (1151), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 18:08:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1195 transitions. [2023-12-02 18:08:14,851 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1195 transitions. Word has length 74 [2023-12-02 18:08:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:08:14,851 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 1195 transitions. [2023-12-02 18:08:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 11 states have internal predecessors, (69), 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 18:08:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1195 transitions. [2023-12-02 18:08:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:08:14,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:08:14,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:08:14,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 18:08:15,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-02 18:08:15,053 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-12-02 18:08:15,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:08:15,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1448865116, now seen corresponding path program 2 times [2023-12-02 18:08:15,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:08:15,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555320904] [2023-12-02 18:08:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:08:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:08:15,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:08:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1026479673] [2023-12-02 18:08:15,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:08:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:08:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:08:15,060 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:08:15,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9bb23f-a4d9-44aa-b9a3-ed78c156e3eb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 18:08:15,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:08:15,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:08:15,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:08:15,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:08:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:08:16,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:08:18,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:08:18,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555320904] [2023-12-02 18:08:18,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:08:18,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026479673] [2023-12-02 18:08:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026479673] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:08:18,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [116587705] [2023-12-02 18:08:18,243 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-12-02 18:08:18,243 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:08:18,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:08:18,243 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:08:18,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:08:22,835 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 126 for LOIs [2023-12-02 18:08:22,884 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:08:37,848 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42850#(and (<= |ULTIMATE.start_main_~x~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775809 |ULTIMATE.start_main_~X~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~v~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~x~0#1|)) (<= 0 (+ |ULTIMATE.start_main_~Y~0#1| 13835058055282163713)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~v~0#1|)))' at error location [2023-12-02 18:08:37,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:08:37,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:08:37,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 18:08:37,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293090169] [2023-12-02 18:08:37,848 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:08:37,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:08:37,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:08:37,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:08:37,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2026, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 18:08:37,849 INFO L87 Difference]: Start difference. First operand 968 states and 1195 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 7 states have internal predecessors, (67), 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)