./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.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_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/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_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/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_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/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 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:07:39,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:07:39,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 16:07:39,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:07:39,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:07:39,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:07:39,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:07:39,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:07:39,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:07:39,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:07:39,542 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:07:39,542 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:07:39,543 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:07:39,543 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:07:39,544 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:07:39,544 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:07:39,545 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:07:39,545 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:07:39,546 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:07:39,546 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:07:39,547 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:07:39,548 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:07:39,549 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:07:39,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:07:39,550 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:07:39,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:07:39,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:07:39,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:07:39,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:07:39,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:07:39,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:07:39,552 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 16:07:39,553 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:07:39,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:07:39,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:07:39,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:07:39,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:07:39,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:07:39,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:07:39,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:07:39,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:07:39,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:07:39,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:07:39,555 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:07:39,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:07:39,556 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:07:39,556 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:07:39,556 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:07:39,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:07:39,556 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_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 011044826c7a01c153d09406112c335d599fb158d7a4b72e6a624d5427477c0d [2023-12-02 16:07:39,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:07:39,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:07:39,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:07:39,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:07:39,788 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:07:39,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2023-12-02 16:07:42,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:07:42,680 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:07:42,681 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound5.c [2023-12-02 16:07:42,688 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/data/676539d45/925b578c6bc34f0fa7101e8808503c51/FLAGe43b9f0e3 [2023-12-02 16:07:42,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/data/676539d45/925b578c6bc34f0fa7101e8808503c51 [2023-12-02 16:07:42,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:07:42,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:07:42,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:07:42,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:07:42,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:07:42,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3a1f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42, skipping insertion in model container [2023-12-02 16:07:42,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,730 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:07:42,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:07:42,897 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:07:42,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:07:42,928 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:07:42,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42 WrapperNode [2023-12-02 16:07:42,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:07:42,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:07:42,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:07:42,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:07:42,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,967 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2023-12-02 16:07:42,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:07:42,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:07:42,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:07:42,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:07:42,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,986 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:07:42,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:07:42,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:07:42,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:07:42,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (1/1) ... [2023-12-02 16:07:42,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:07:43,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:43,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:07:43,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:07:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:07:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:07:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:07:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:07:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:07:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:07:43,123 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:07:43,126 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:07:43,356 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:07:43,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:07:43,400 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 16:07:43,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:07:43 BoogieIcfgContainer [2023-12-02 16:07:43,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:07:43,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:07:43,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:07:43,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:07:43,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:07:42" (1/3) ... [2023-12-02 16:07:43,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fda1315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:07:43, skipping insertion in model container [2023-12-02 16:07:43,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:07:42" (2/3) ... [2023-12-02 16:07:43,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fda1315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:07:43, skipping insertion in model container [2023-12-02 16:07:43,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:07:43" (3/3) ... [2023-12-02 16:07:43,412 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound5.c [2023-12-02 16:07:43,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:07:43,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-12-02 16:07:43,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:07:43,479 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;@311f809d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:07:43,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-12-02 16:07:43,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 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 16:07:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 16:07:43,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:43,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 16:07:43,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:43,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash 184961, now seen corresponding path program 1 times [2023-12-02 16:07:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406428016] [2023-12-02 16:07:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:43,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:43,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406428016] [2023-12-02 16:07:43,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406428016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:43,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:07:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834444112] [2023-12-02 16:07:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:43,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:43,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:43,736 INFO L87 Difference]: Start difference. First operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:07:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:43,819 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2023-12-02 16:07:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:07:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 16:07:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:43,830 INFO L225 Difference]: With dead ends: 175 [2023-12-02 16:07:43,830 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 16:07:43,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:07:43,837 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:43,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 260 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:07:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 16:07:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-02 16:07:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 79 states have internal predecessors, (83), 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 16:07:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2023-12-02 16:07:43,882 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 3 [2023-12-02 16:07:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:43,882 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2023-12-02 16:07:43,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:07:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2023-12-02 16:07:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 16:07:43,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:43,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 16:07:43,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:07:43,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:43,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1215253681, now seen corresponding path program 1 times [2023-12-02 16:07:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:43,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788282805] [2023-12-02 16:07:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:43,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827796827] [2023-12-02 16:07:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:43,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:43,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:43,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:43,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:07:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:43,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:07:43,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:44,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:44,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:44,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788282805] [2023-12-02 16:07:44,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:44,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827796827] [2023-12-02 16:07:44,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827796827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:44,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:44,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:07:44,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947131452] [2023-12-02 16:07:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:44,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:44,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:44,029 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:07:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:44,132 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2023-12-02 16:07:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 16:07:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:44,134 INFO L225 Difference]: With dead ends: 87 [2023-12-02 16:07:44,135 INFO L226 Difference]: Without dead ends: 82 [2023-12-02 16:07:44,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:44,137 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 66 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:44,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 46 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-02 16:07:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-02 16:07:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 74 states have internal predecessors, (78), 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 16:07:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2023-12-02 16:07:44,149 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 6 [2023-12-02 16:07:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:44,149 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2023-12-02 16:07:44,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:07:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2023-12-02 16:07:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 16:07:44,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:44,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:44,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:07:44,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 16:07:44,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:44,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:44,357 INFO L85 PathProgramCache]: Analyzing trace with hash -981841496, now seen corresponding path program 1 times [2023-12-02 16:07:44,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:44,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878354259] [2023-12-02 16:07:44,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:44,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:44,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:44,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099883326] [2023-12-02 16:07:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:44,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:44,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:07:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:44,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:07:44,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:44,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:44,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878354259] [2023-12-02 16:07:44,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099883326] [2023-12-02 16:07:44,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099883326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:44,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:44,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:07:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957672081] [2023-12-02 16:07:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:44,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:44,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:44,469 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:07:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:44,562 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2023-12-02 16:07:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:44,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:07:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:44,565 INFO L225 Difference]: With dead ends: 104 [2023-12-02 16:07:44,565 INFO L226 Difference]: Without dead ends: 103 [2023-12-02 16:07:44,566 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 16:07:44,567 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:44,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 105 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-02 16:07:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2023-12-02 16:07:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 76 states have internal predecessors, (80), 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 16:07:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2023-12-02 16:07:44,581 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 7 [2023-12-02 16:07:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:44,581 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2023-12-02 16:07:44,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 16:07:44,582 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2023-12-02 16:07:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:07:44,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:44,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:44,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:07:44,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:44,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:44,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2034502159, now seen corresponding path program 1 times [2023-12-02 16:07:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:44,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593336117] [2023-12-02 16:07:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:44,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:44,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:44,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730632479] [2023-12-02 16:07:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:44,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:44,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:44,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:44,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:07:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:44,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:07:44,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:44,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:44,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593336117] [2023-12-02 16:07:44,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730632479] [2023-12-02 16:07:44,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730632479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:44,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:44,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:07:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100527709] [2023-12-02 16:07:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:44,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:44,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:44,931 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:45,051 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2023-12-02 16:07:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (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 11 [2023-12-02 16:07:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:45,053 INFO L225 Difference]: With dead ends: 150 [2023-12-02 16:07:45,053 INFO L226 Difference]: Without dead ends: 147 [2023-12-02 16:07:45,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:45,055 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:45,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 90 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-02 16:07:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 117. [2023-12-02 16:07:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 75 states have (on average 1.68) internal successors, (126), 103 states have internal predecessors, (126), 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 16:07:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2023-12-02 16:07:45,070 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 11 [2023-12-02 16:07:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:45,070 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2023-12-02 16:07:45,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2023-12-02 16:07:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 16:07:45,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:45,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:45,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:07:45,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:45,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:45,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1354942573, now seen corresponding path program 1 times [2023-12-02 16:07:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:45,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420457990] [2023-12-02 16:07:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:45,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:45,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251812414] [2023-12-02 16:07:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:45,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:45,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:45,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:45,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:07:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:45,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:07:45,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:45,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:45,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420457990] [2023-12-02 16:07:45,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251812414] [2023-12-02 16:07:45,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251812414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:45,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:45,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:07:45,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484376918] [2023-12-02 16:07:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:45,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:45,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:45,390 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:45,485 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2023-12-02 16:07:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:45,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-12-02 16:07:45,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:45,487 INFO L225 Difference]: With dead ends: 147 [2023-12-02 16:07:45,487 INFO L226 Difference]: Without dead ends: 144 [2023-12-02 16:07:45,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:45,489 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:45,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 93 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-02 16:07:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2023-12-02 16:07:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.644736842105263) internal successors, (125), 104 states have internal predecessors, (125), 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 16:07:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 149 transitions. [2023-12-02 16:07:45,503 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 149 transitions. Word has length 12 [2023-12-02 16:07:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:45,503 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 149 transitions. [2023-12-02 16:07:45,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 149 transitions. [2023-12-02 16:07:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 16:07:45,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:45,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:45,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 16:07:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:45,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:45,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash -946453133, now seen corresponding path program 1 times [2023-12-02 16:07:45,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:45,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538436073] [2023-12-02 16:07:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:45,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:45,720 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715149941] [2023-12-02 16:07:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:45,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:45,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:45,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:45,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 16:07:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:45,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:45,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:45,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:45,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:45,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538436073] [2023-12-02 16:07:45,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:45,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715149941] [2023-12-02 16:07:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715149941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:07:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721977013] [2023-12-02 16:07:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:45,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:45,823 INFO L87 Difference]: Start difference. First operand 118 states and 149 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:45,897 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2023-12-02 16:07:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:45,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2023-12-02 16:07:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:45,899 INFO L225 Difference]: With dead ends: 140 [2023-12-02 16:07:45,899 INFO L226 Difference]: Without dead ends: 137 [2023-12-02 16:07:45,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:45,900 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:45,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 111 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-02 16:07:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2023-12-02 16:07:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 105 states have internal predecessors, (124), 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 16:07:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2023-12-02 16:07:45,920 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 13 [2023-12-02 16:07:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:45,920 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2023-12-02 16:07:45,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2023-12-02 16:07:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:07:45,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:45,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:45,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 16:07:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:07:46,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:46,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash 724724015, now seen corresponding path program 1 times [2023-12-02 16:07:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:46,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879408912] [2023-12-02 16:07:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:46,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237709036] [2023-12-02 16:07:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:46,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:46,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:46,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 16:07:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:46,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:46,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:07:46,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:46,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879408912] [2023-12-02 16:07:46,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237709036] [2023-12-02 16:07:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237709036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:46,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:46,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:07:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839452097] [2023-12-02 16:07:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:46,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:46,237 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:46,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:46,317 INFO L93 Difference]: Finished difference Result 137 states and 153 transitions. [2023-12-02 16:07:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:46,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 14 [2023-12-02 16:07:46,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:46,319 INFO L225 Difference]: With dead ends: 137 [2023-12-02 16:07:46,319 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 16:07:46,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:46,321 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:46,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 114 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 16:07:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2023-12-02 16:07:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 102 states have internal predecessors, (118), 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 16:07:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-12-02 16:07:46,332 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 14 [2023-12-02 16:07:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:46,333 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-12-02 16:07:46,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 16:07:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-12-02 16:07:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 16:07:46,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:46,334 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:46,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 16:07:46,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:46,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:46,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash -850449246, now seen corresponding path program 1 times [2023-12-02 16:07:46,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:46,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986200957] [2023-12-02 16:07:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:46,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:46,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:46,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072462929] [2023-12-02 16:07:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:46,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:46,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:46,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:46,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 16:07:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:46,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:46,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:07:46,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:46,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:46,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986200957] [2023-12-02 16:07:46,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:46,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072462929] [2023-12-02 16:07:46,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072462929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:46,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:46,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:07:46,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937933271] [2023-12-02 16:07:46,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:46,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:07:46,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:07:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:07:46,642 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:07:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:46,697 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2023-12-02 16:07:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:07:46,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 16:07:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:46,699 INFO L225 Difference]: With dead ends: 116 [2023-12-02 16:07:46,699 INFO L226 Difference]: Without dead ends: 114 [2023-12-02 16:07:46,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:07:46,700 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 75 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:46,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 210 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:07:46,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-02 16:07:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-02 16:07:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 74 states have (on average 1.554054054054054) internal successors, (115), 100 states have internal predecessors, (115), 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 16:07:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2023-12-02 16:07:46,711 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 20 [2023-12-02 16:07:46,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:46,712 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2023-12-02 16:07:46,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:07:46,712 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2023-12-02 16:07:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 16:07:46,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:46,713 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] [2023-12-02 16:07:46,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 16:07:46,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 16:07:46,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:46,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -594122769, now seen corresponding path program 1 times [2023-12-02 16:07:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33925145] [2023-12-02 16:07:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:46,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942941313] [2023-12-02 16:07:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:46,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:46,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:46,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 16:07:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:46,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:46,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:07:47,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:47,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33925145] [2023-12-02 16:07:47,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942941313] [2023-12-02 16:07:47,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942941313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:47,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:47,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:07:47,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120793207] [2023-12-02 16:07:47,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:47,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:07:47,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:47,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:07:47,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:07:47,012 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:07:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:47,083 INFO L93 Difference]: Finished difference Result 195 states and 229 transitions. [2023-12-02 16:07:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:07:47,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-02 16:07:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:47,085 INFO L225 Difference]: With dead ends: 195 [2023-12-02 16:07:47,085 INFO L226 Difference]: Without dead ends: 120 [2023-12-02 16:07:47,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:07:47,086 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 8 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:47,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 302 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:07:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-02 16:07:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-02 16:07:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.518987341772152) internal successors, (120), 105 states have internal predecessors, (120), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 16:07:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2023-12-02 16:07:47,098 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 21 [2023-12-02 16:07:47,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:47,098 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2023-12-02 16:07:47,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:07:47,098 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2023-12-02 16:07:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 16:07:47,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:47,099 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] [2023-12-02 16:07:47,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 16:07:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:47,305 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash 48901001, now seen corresponding path program 1 times [2023-12-02 16:07:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:47,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217161207] [2023-12-02 16:07:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:47,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780123001] [2023-12-02 16:07:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:47,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:47,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:47,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:47,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 16:07:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:47,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:07:47,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:07:47,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:47,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217161207] [2023-12-02 16:07:47,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780123001] [2023-12-02 16:07:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780123001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:07:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807648889] [2023-12-02 16:07:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:47,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:47,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:47,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:47,406 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:07:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:47,529 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2023-12-02 16:07:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:07:47,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-12-02 16:07:47,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:47,532 INFO L225 Difference]: With dead ends: 208 [2023-12-02 16:07:47,532 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 16:07:47,533 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 16:07:47,533 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 158 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:47,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 83 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 16:07:47,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 172. [2023-12-02 16:07:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 149 states have internal predecessors, (184), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:07:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2023-12-02 16:07:47,547 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 24 [2023-12-02 16:07:47,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:47,548 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2023-12-02 16:07:47,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:07:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2023-12-02 16:07:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:07:47,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:47,549 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:47,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 16:07:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:47,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:47,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash -401856115, now seen corresponding path program 1 times [2023-12-02 16:07:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:47,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382811533] [2023-12-02 16:07:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:47,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581898677] [2023-12-02 16:07:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:47,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:47,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:07:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:47,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:07:47,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:47,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:47,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:47,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382811533] [2023-12-02 16:07:47,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:47,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581898677] [2023-12-02 16:07:47,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581898677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:47,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:47,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:07:47,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84335954] [2023-12-02 16:07:47,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:47,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:47,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:47,861 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:47,956 INFO L93 Difference]: Finished difference Result 172 states and 224 transitions. [2023-12-02 16:07:47,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:07:47,957 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-12-02 16:07:47,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:47,958 INFO L225 Difference]: With dead ends: 172 [2023-12-02 16:07:47,959 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 16:07:47,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:07:47,960 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 114 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:47,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 61 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 16:07:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-02 16:07:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 123 states have (on average 1.4471544715447155) internal successors, (178), 147 states have internal predecessors, (178), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:07:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-12-02 16:07:47,974 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 38 [2023-12-02 16:07:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:47,974 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-12-02 16:07:47,974 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-12-02 16:07:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 16:07:47,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:47,975 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:47,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 16:07:48,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:48,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:48,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash 427362428, now seen corresponding path program 1 times [2023-12-02 16:07:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:48,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782138270] [2023-12-02 16:07:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:48,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:48,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:48,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621632222] [2023-12-02 16:07:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:48,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:48,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:48,186 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:48,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 16:07:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:48,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:48,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:48,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:48,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782138270] [2023-12-02 16:07:48,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621632222] [2023-12-02 16:07:48,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621632222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:48,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:48,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:07:48,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135705421] [2023-12-02 16:07:48,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:48,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:48,280 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:48,359 INFO L93 Difference]: Finished difference Result 215 states and 259 transitions. [2023-12-02 16:07:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:07:48,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-12-02 16:07:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:48,362 INFO L225 Difference]: With dead ends: 215 [2023-12-02 16:07:48,362 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 16:07:48,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:07:48,363 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 105 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:48,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 191 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 16:07:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 170. [2023-12-02 16:07:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 147 states have internal predecessors, (176), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:07:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2023-12-02 16:07:48,377 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 39 [2023-12-02 16:07:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:48,378 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2023-12-02 16:07:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:48,378 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2023-12-02 16:07:48,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 16:07:48,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:48,379 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:48,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 16:07:48,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:48,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:48,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1621563628, now seen corresponding path program 1 times [2023-12-02 16:07:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682983766] [2023-12-02 16:07:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:48,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:48,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:48,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655540187] [2023-12-02 16:07:48,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:48,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:48,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:48,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 16:07:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:48,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:07:48,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:48,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:48,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682983766] [2023-12-02 16:07:48,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655540187] [2023-12-02 16:07:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655540187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:07:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316814394] [2023-12-02 16:07:48,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:48,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:07:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:07:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:48,673 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:48,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:48,721 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2023-12-02 16:07:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:07:48,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2023-12-02 16:07:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:48,724 INFO L225 Difference]: With dead ends: 183 [2023-12-02 16:07:48,724 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 16:07:48,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:07:48,725 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:48,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:07:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 16:07:48,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2023-12-02 16:07:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 123 states have (on average 1.4227642276422765) internal successors, (175), 147 states have internal predecessors, (175), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 16:07:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2023-12-02 16:07:48,738 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 41 [2023-12-02 16:07:48,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:48,738 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2023-12-02 16:07:48,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2023-12-02 16:07:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 16:07:48,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:48,740 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:48,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-02 16:07:48,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 16:07:48,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:48,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1271136500, now seen corresponding path program 1 times [2023-12-02 16:07:48,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:48,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811394212] [2023-12-02 16:07:48,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:48,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:48,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:48,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128471412] [2023-12-02 16:07:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:48,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:48,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:48,954 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:48,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 16:07:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:49,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:49,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:49,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:49,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:49,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811394212] [2023-12-02 16:07:49,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:49,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128471412] [2023-12-02 16:07:49,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128471412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:49,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:49,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:07:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143432965] [2023-12-02 16:07:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:07:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:49,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:07:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:07:49,099 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:49,330 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2023-12-02 16:07:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:07:49,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-12-02 16:07:49,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:49,333 INFO L225 Difference]: With dead ends: 250 [2023-12-02 16:07:49,333 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 16:07:49,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:07:49,334 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 152 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:49,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 237 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:07:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 16:07:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 205. [2023-12-02 16:07:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 153 states have (on average 1.4379084967320261) internal successors, (220), 177 states have internal predecessors, (220), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:07:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 270 transitions. [2023-12-02 16:07:49,351 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 270 transitions. Word has length 42 [2023-12-02 16:07:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:49,351 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 270 transitions. [2023-12-02 16:07:49,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 270 transitions. [2023-12-02 16:07:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 16:07:49,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:49,353 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:49,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 16:07:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:49,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:49,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1271135218, now seen corresponding path program 1 times [2023-12-02 16:07:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:49,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850115507] [2023-12-02 16:07:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:49,562 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159701658] [2023-12-02 16:07:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:49,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:49,564 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:49,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:07:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:49,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:07:49,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:49,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:49,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850115507] [2023-12-02 16:07:49,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159701658] [2023-12-02 16:07:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159701658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:49,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:07:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46164392] [2023-12-02 16:07:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:49,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:49,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:49,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:49,713 INFO L87 Difference]: Start difference. First operand 205 states and 270 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:49,791 INFO L93 Difference]: Finished difference Result 205 states and 270 transitions. [2023-12-02 16:07:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:07:49,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-12-02 16:07:49,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:49,793 INFO L225 Difference]: With dead ends: 205 [2023-12-02 16:07:49,794 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 16:07:49,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:07:49,794 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 106 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:49,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 59 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 16:07:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-12-02 16:07:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 153 states have (on average 1.4183006535947713) internal successors, (217), 176 states have internal predecessors, (217), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:07:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 267 transitions. [2023-12-02 16:07:49,811 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 267 transitions. Word has length 42 [2023-12-02 16:07:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:49,811 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 267 transitions. [2023-12-02 16:07:49,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 267 transitions. [2023-12-02 16:07:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 16:07:49,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:49,812 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:49,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 16:07:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 16:07:50,015 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:50,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:50,015 INFO L85 PathProgramCache]: Analyzing trace with hash 750486230, now seen corresponding path program 1 times [2023-12-02 16:07:50,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703000987] [2023-12-02 16:07:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:50,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901654153] [2023-12-02 16:07:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:50,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:50,025 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:50,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 16:07:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:50,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:07:50,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:50,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:50,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703000987] [2023-12-02 16:07:50,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901654153] [2023-12-02 16:07:50,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901654153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:50,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:50,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:07:50,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584006149] [2023-12-02 16:07:50,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:50,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:50,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:50,147 INFO L87 Difference]: Start difference. First operand 204 states and 267 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:50,210 INFO L93 Difference]: Finished difference Result 204 states and 267 transitions. [2023-12-02 16:07:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:07:50,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2023-12-02 16:07:50,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:50,212 INFO L225 Difference]: With dead ends: 204 [2023-12-02 16:07:50,212 INFO L226 Difference]: Without dead ends: 203 [2023-12-02 16:07:50,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:50,213 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:50,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 71 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-02 16:07:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-12-02 16:07:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 153 states have (on average 1.3986928104575163) internal successors, (214), 175 states have internal predecessors, (214), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:07:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 264 transitions. [2023-12-02 16:07:50,225 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 264 transitions. Word has length 43 [2023-12-02 16:07:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:50,226 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 264 transitions. [2023-12-02 16:07:50,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:50,226 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 264 transitions. [2023-12-02 16:07:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 16:07:50,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:50,227 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:07:50,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 16:07:50,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 16:07:50,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:50,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1790236788, now seen corresponding path program 1 times [2023-12-02 16:07:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781307143] [2023-12-02 16:07:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:50,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279997308] [2023-12-02 16:07:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:50,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:50,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:50,437 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:50,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 16:07:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:50,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:07:50,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:50,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:07:50,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781307143] [2023-12-02 16:07:50,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279997308] [2023-12-02 16:07:50,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279997308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:07:50,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:07:50,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:07:50,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694799695] [2023-12-02 16:07:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:07:50,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:07:50,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:07:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:07:50,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:50,579 INFO L87 Difference]: Start difference. First operand 203 states and 264 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:07:50,654 INFO L93 Difference]: Finished difference Result 219 states and 275 transitions. [2023-12-02 16:07:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:07:50,655 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-12-02 16:07:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:07:50,657 INFO L225 Difference]: With dead ends: 219 [2023-12-02 16:07:50,657 INFO L226 Difference]: Without dead ends: 218 [2023-12-02 16:07:50,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:07:50,658 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 50 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:07:50,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 146 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:07:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-02 16:07:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 207. [2023-12-02 16:07:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 179 states have internal predecessors, (218), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 16:07:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 268 transitions. [2023-12-02 16:07:50,674 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 268 transitions. Word has length 44 [2023-12-02 16:07:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:07:50,674 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 268 transitions. [2023-12-02 16:07:50,674 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:07:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 268 transitions. [2023-12-02 16:07:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 16:07:50,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:07:50,675 INFO L195 NwaCegarLoop]: trace histogram [5, 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 16:07:50,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 16:07:50,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 16:07:50,880 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:07:50,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:07:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1959686662, now seen corresponding path program 1 times [2023-12-02 16:07:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:07:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722071019] [2023-12-02 16:07:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:50,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:07:50,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:07:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574388921] [2023-12-02 16:07:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:07:50,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:07:50,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:07:50,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:07:50,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 16:07:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:07:50,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:07:50,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:07:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 16:07:51,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:07:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:07:51,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:07:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722071019] [2023-12-02 16:07:51,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:07:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574388921] [2023-12-02 16:07:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574388921] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:07:51,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623530955] [2023-12-02 16:07:51,125 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:07:51,125 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:07:51,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:07:51,131 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:07:51,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:07:57,326 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 16:07:57,328 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:08:01,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [623530955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:08:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:08:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 7] total 25 [2023-12-02 16:08:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759548117] [2023-12-02 16:08:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:08:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:08:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:08:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:08:01,074 INFO L87 Difference]: Start difference. First operand 207 states and 268 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:08:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:02,349 INFO L93 Difference]: Finished difference Result 369 states and 478 transitions. [2023-12-02 16:08:02,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 16:08:02,349 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2023-12-02 16:08:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:02,351 INFO L225 Difference]: With dead ends: 369 [2023-12-02 16:08:02,351 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 16:08:02,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 21 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-12-02 16:08:02,352 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:02,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 147 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:08:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 16:08:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 208. [2023-12-02 16:08:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 156 states have (on average 1.294871794871795) internal successors, (202), 179 states have internal predecessors, (202), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:08:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 254 transitions. [2023-12-02 16:08:02,375 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 254 transitions. Word has length 47 [2023-12-02 16:08:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:02,376 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 254 transitions. [2023-12-02 16:08:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:08:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 254 transitions. [2023-12-02 16:08:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 16:08:02,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:02,377 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 16:08:02,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 16:08:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 16:08:02,578 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:08:02,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash 368831322, now seen corresponding path program 1 times [2023-12-02 16:08:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634492066] [2023-12-02 16:08:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:02,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:02,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286065448] [2023-12-02 16:08:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:02,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:02,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:02,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:02,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 16:08:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:08:02,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:08:02,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 16:08:02,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:08:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 16:08:02,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:02,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634492066] [2023-12-02 16:08:02,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:02,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286065448] [2023-12-02 16:08:02,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286065448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:08:02,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [870031102] [2023-12-02 16:08:02,808 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 16:08:02,809 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:08:02,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:08:02,809 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:08:02,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:08:07,033 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:08:07,034 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:08:13,250 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8877#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~r~0#1|) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= (+ (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 1) 0) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-12-02 16:08:13,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:08:13,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:08:13,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-12-02 16:08:13,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271997080] [2023-12-02 16:08:13,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:08:13,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:08:13,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:08:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:08:13,252 INFO L87 Difference]: Start difference. First operand 208 states and 254 transitions. Second operand has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 16:08:13,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:13,556 INFO L93 Difference]: Finished difference Result 514 states and 614 transitions. [2023-12-02 16:08:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 16:08:13,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 54 [2023-12-02 16:08:13,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:13,560 INFO L225 Difference]: With dead ends: 514 [2023-12-02 16:08:13,560 INFO L226 Difference]: Without dead ends: 411 [2023-12-02 16:08:13,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 111 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 16:08:13,562 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 152 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:13,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 442 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:08:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-02 16:08:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 358. [2023-12-02 16:08:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 280 states have (on average 1.2714285714285714) internal successors, (356), 304 states have internal predecessors, (356), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 16:08:13,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 448 transitions. [2023-12-02 16:08:13,590 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 448 transitions. Word has length 54 [2023-12-02 16:08:13,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:13,590 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 448 transitions. [2023-12-02 16:08:13,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 16:08:13,591 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 448 transitions. [2023-12-02 16:08:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 16:08:13,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:13,591 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:08:13,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 16:08:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:13,792 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:08:13,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1327655998, now seen corresponding path program 1 times [2023-12-02 16:08:13,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:13,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391541708] [2023-12-02 16:08:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:13,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:13,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042886775] [2023-12-02 16:08:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:13,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:13,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:13,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:13,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 16:08:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:08:13,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:08:13,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 16:08:13,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:08:14,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391541708] [2023-12-02 16:08:14,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042886775] [2023-12-02 16:08:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042886775] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:08:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1821290524] [2023-12-02 16:08:14,095 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 16:08:14,095 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:08:14,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:08:14,096 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:08:14,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:08:17,667 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:08:17,668 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:08:24,471 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10163#(and (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (exists ((|v_ULTIMATE.start_main_#t~post7#1_38| Int)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= ~counter~0 (+ |v_ULTIMATE.start_main_#t~post7#1_38| 1)) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= |v_ULTIMATE.start_main_#t~post7#1_38| 4) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= (+ (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 1) 0) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 2 |v_ULTIMATE.start_main_#t~post7#1_38|))))' at error location [2023-12-02 16:08:24,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:08:24,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:08:24,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 16:08:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731432697] [2023-12-02 16:08:24,471 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:08:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:08:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:24,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:08:24,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:08:24,473 INFO L87 Difference]: Start difference. First operand 358 states and 448 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 16:08:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:25,076 INFO L93 Difference]: Finished difference Result 508 states and 609 transitions. [2023-12-02 16:08:25,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:08:25,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2023-12-02 16:08:25,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:25,080 INFO L225 Difference]: With dead ends: 508 [2023-12-02 16:08:25,080 INFO L226 Difference]: Without dead ends: 504 [2023-12-02 16:08:25,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 20 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:08:25,081 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 224 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:25,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 190 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:08:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-02 16:08:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 384. [2023-12-02 16:08:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 302 states have (on average 1.271523178807947) internal successors, (384), 326 states have internal predecessors, (384), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:08:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 484 transitions. [2023-12-02 16:08:25,122 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 484 transitions. Word has length 57 [2023-12-02 16:08:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:25,122 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 484 transitions. [2023-12-02 16:08:25,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 16:08:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 484 transitions. [2023-12-02 16:08:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 16:08:25,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:25,124 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:08:25,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 16:08:25,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:25,330 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:08:25,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -908417241, now seen corresponding path program 1 times [2023-12-02 16:08:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157692285] [2023-12-02 16:08:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:25,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615228621] [2023-12-02 16:08:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:25,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:25,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:25,340 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:25,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 16:08:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:08:25,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:08:25,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 16:08:25,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:08:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 16:08:25,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157692285] [2023-12-02 16:08:25,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:25,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615228621] [2023-12-02 16:08:25,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615228621] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:08:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1477267821] [2023-12-02 16:08:25,565 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 16:08:25,565 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:08:25,566 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:08:25,566 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:08:25,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:08:29,041 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:08:29,042 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:08:36,413 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11672#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 3 ~counter~0))' at error location [2023-12-02 16:08:36,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:08:36,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:08:36,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 16:08:36,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713250948] [2023-12-02 16:08:36,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:08:36,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:08:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:36,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:08:36,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:08:36,415 INFO L87 Difference]: Start difference. First operand 384 states and 484 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 16:08:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:36,608 INFO L93 Difference]: Finished difference Result 466 states and 571 transitions. [2023-12-02 16:08:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:08:36,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 72 [2023-12-02 16:08:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:36,612 INFO L225 Difference]: With dead ends: 466 [2023-12-02 16:08:36,612 INFO L226 Difference]: Without dead ends: 464 [2023-12-02 16:08:36,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 165 SyntacticMatches, 26 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:08:36,612 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 155 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:36,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 467 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:08:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-02 16:08:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 383. [2023-12-02 16:08:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 302 states have (on average 1.2516556291390728) internal successors, (378), 325 states have internal predecessors, (378), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:08:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 478 transitions. [2023-12-02 16:08:36,640 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 478 transitions. Word has length 72 [2023-12-02 16:08:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:36,641 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 478 transitions. [2023-12-02 16:08:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 16:08:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 478 transitions. [2023-12-02 16:08:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 16:08:36,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:36,642 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:08:36,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 16:08:36,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:36,843 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:08:36,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:36,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1110604033, now seen corresponding path program 1 times [2023-12-02 16:08:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:36,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631849126] [2023-12-02 16:08:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:36,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:36,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:36,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876494778] [2023-12-02 16:08:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:36,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:36,853 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:36,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 16:08:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:08:36,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:08:36,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 16:08:36,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:08:36,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:36,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631849126] [2023-12-02 16:08:36,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:36,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876494778] [2023-12-02 16:08:36,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876494778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:08:36,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:08:36,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:08:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310200858] [2023-12-02 16:08:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:08:36,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:08:36,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:36,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:08:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:08:36,945 INFO L87 Difference]: Start difference. First operand 383 states and 478 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:08:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:37,034 INFO L93 Difference]: Finished difference Result 390 states and 479 transitions. [2023-12-02 16:08:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:08:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2023-12-02 16:08:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:37,038 INFO L225 Difference]: With dead ends: 390 [2023-12-02 16:08:37,038 INFO L226 Difference]: Without dead ends: 389 [2023-12-02 16:08:37,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:08:37,039 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 22 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:37,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 212 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:08:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-02 16:08:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 381. [2023-12-02 16:08:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 301 states have (on average 1.2425249169435215) internal successors, (374), 323 states have internal predecessors, (374), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:08:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 474 transitions. [2023-12-02 16:08:37,069 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 474 transitions. Word has length 74 [2023-12-02 16:08:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:37,069 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 474 transitions. [2023-12-02 16:08:37,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 16:08:37,070 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 474 transitions. [2023-12-02 16:08:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 16:08:37,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:37,071 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:08:37,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-02 16:08:37,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:37,272 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:08:37,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:37,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1871532887, now seen corresponding path program 1 times [2023-12-02 16:08:37,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:37,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520674977] [2023-12-02 16:08:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:37,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:37,280 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:37,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484814951] [2023-12-02 16:08:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:37,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:37,281 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:37,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 16:08:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:08:37,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:08:37,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 16:08:37,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:08:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 16:08:37,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:37,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520674977] [2023-12-02 16:08:37,544 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:37,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484814951] [2023-12-02 16:08:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484814951] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:08:37,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880912112] [2023-12-02 16:08:37,547 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:08:37,547 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:08:37,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:08:37,547 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:08:37,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:08:41,482 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:08:41,483 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:08:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1880912112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:08:49,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:08:49,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [4, 4] total 25 [2023-12-02 16:08:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767234916] [2023-12-02 16:08:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:08:49,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 16:08:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:08:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 16:08:49,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-02 16:08:49,388 INFO L87 Difference]: Start difference. First operand 381 states and 474 transitions. Second operand has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 16:08:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:08:53,412 INFO L93 Difference]: Finished difference Result 392 states and 481 transitions. [2023-12-02 16:08:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 16:08:53,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 77 [2023-12-02 16:08:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:08:53,415 INFO L225 Difference]: With dead ends: 392 [2023-12-02 16:08:53,415 INFO L226 Difference]: Without dead ends: 389 [2023-12-02 16:08:53,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 176 SyntacticMatches, 29 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 16:08:53,416 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:08:53,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 16:08:53,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-02 16:08:53,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2023-12-02 16:08:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 305 states have (on average 1.222950819672131) internal successors, (373), 327 states have internal predecessors, (373), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:08:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 473 transitions. [2023-12-02 16:08:53,459 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 473 transitions. Word has length 77 [2023-12-02 16:08:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:08:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 473 transitions. [2023-12-02 16:08:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 16:08:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 473 transitions. [2023-12-02 16:08:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 16:08:53,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:08:53,461 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:08:53,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 16:08:53,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 16:08:53,661 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:08:53,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:08:53,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1958903007, now seen corresponding path program 1 times [2023-12-02 16:08:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:08:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100071523] [2023-12-02 16:08:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:08:53,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:08:53,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548487688] [2023-12-02 16:08:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:08:53,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:08:53,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:08:53,669 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:08:53,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 16:08:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:08:53,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:08:53,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:08:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 16:08:53,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:08:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 16:08:53,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:08:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100071523] [2023-12-02 16:08:53,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:08:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548487688] [2023-12-02 16:08:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548487688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:08:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [553577633] [2023-12-02 16:08:53,943 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 16:08:53,943 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:08:53,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:08:53,943 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:08:53,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:09:08,269 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:09:08,270 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:09:21,122 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15792#(and (exists ((|v_ULTIMATE.start_main_#t~post6#1_50| Int)) (and (<= ~counter~0 6) (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 5 |v_ULTIMATE.start_main_#t~post6#1_50|) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ 4611686018427387903 |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~b~0#1|)))) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) 0))' at error location [2023-12-02 16:09:21,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:09:21,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:09:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2023-12-02 16:09:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642903845] [2023-12-02 16:09:21,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:09:21,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:09:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:09:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:09:21,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 16:09:21,126 INFO L87 Difference]: Start difference. First operand 385 states and 473 transitions. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 16:09:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:09:21,421 INFO L93 Difference]: Finished difference Result 534 states and 652 transitions. [2023-12-02 16:09:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 16:09:21,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 82 [2023-12-02 16:09:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:09:21,424 INFO L225 Difference]: With dead ends: 534 [2023-12-02 16:09:21,424 INFO L226 Difference]: Without dead ends: 408 [2023-12-02 16:09:21,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 183 SyntacticMatches, 12 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=454, Invalid=3452, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 16:09:21,426 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 82 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:09:21,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 544 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:09:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-02 16:09:21,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 395. [2023-12-02 16:09:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 314 states have (on average 1.2101910828025477) internal successors, (380), 336 states have internal predecessors, (380), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:09:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 480 transitions. [2023-12-02 16:09:21,460 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 480 transitions. Word has length 82 [2023-12-02 16:09:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:09:21,460 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 480 transitions. [2023-12-02 16:09:21,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-02 16:09:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 480 transitions. [2023-12-02 16:09:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 16:09:21,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:09:21,462 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:09:21,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 16:09:21,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 16:09:21,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:09:21,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:09:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1245996833, now seen corresponding path program 1 times [2023-12-02 16:09:21,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:09:21,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632914541] [2023-12-02 16:09:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:09:21,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:09:21,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:09:21,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995382155] [2023-12-02 16:09:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:09:21,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:09:21,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:09:21,672 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:09:21,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 16:09:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:09:21,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:09:21,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:09:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 16:09:21,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:09:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 16:09:21,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:09:21,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632914541] [2023-12-02 16:09:21,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:09:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995382155] [2023-12-02 16:09:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995382155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:09:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [214801897] [2023-12-02 16:09:21,948 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 16:09:21,948 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:09:21,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:09:21,948 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:09:21,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:09:26,010 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 16:09:26,011 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:09:30,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [214801897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:09:30,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:09:30,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5] total 20 [2023-12-02 16:09:30,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390377295] [2023-12-02 16:09:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:09:30,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 16:09:30,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:09:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 16:09:30,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-12-02 16:09:30,880 INFO L87 Difference]: Start difference. First operand 395 states and 480 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:09:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:09:32,098 INFO L93 Difference]: Finished difference Result 410 states and 495 transitions. [2023-12-02 16:09:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:09:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2023-12-02 16:09:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:09:32,101 INFO L225 Difference]: With dead ends: 410 [2023-12-02 16:09:32,101 INFO L226 Difference]: Without dead ends: 409 [2023-12-02 16:09:32,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 193 SyntacticMatches, 41 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2023-12-02 16:09:32,101 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:09:32,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:09:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-02 16:09:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 394. [2023-12-02 16:09:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 314 states have (on average 1.2038216560509554) internal successors, (378), 335 states have internal predecessors, (378), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:09:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 478 transitions. [2023-12-02 16:09:32,135 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 478 transitions. Word has length 85 [2023-12-02 16:09:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:09:32,135 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 478 transitions. [2023-12-02 16:09:32,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 16:09:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 478 transitions. [2023-12-02 16:09:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 16:09:32,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:09:32,137 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:09:32,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 16:09:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 16:09:32,342 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:09:32,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:09:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1927264933, now seen corresponding path program 1 times [2023-12-02 16:09:32,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:09:32,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868916178] [2023-12-02 16:09:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:09:32,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:09:32,349 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:09:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744780250] [2023-12-02 16:09:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:09:32,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:09:32,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:09:32,351 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:09:32,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 16:09:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:09:32,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:09:32,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:09:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 16:09:32,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:09:32,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:09:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868916178] [2023-12-02 16:09:32,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:09:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744780250] [2023-12-02 16:09:32,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744780250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:09:32,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:09:32,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:09:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052831541] [2023-12-02 16:09:32,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:09:32,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:09:32,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:09:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:09:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:09:32,680 INFO L87 Difference]: Start difference. First operand 394 states and 478 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 16:09:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:09:32,978 INFO L93 Difference]: Finished difference Result 503 states and 608 transitions. [2023-12-02 16:09:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:09:32,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 87 [2023-12-02 16:09:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:09:32,982 INFO L225 Difference]: With dead ends: 503 [2023-12-02 16:09:32,982 INFO L226 Difference]: Without dead ends: 500 [2023-12-02 16:09:32,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:09:32,983 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 212 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:09:32,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 227 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:09:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-02 16:09:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 391. [2023-12-02 16:09:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 314 states have (on average 1.1815286624203822) internal successors, (371), 332 states have internal predecessors, (371), 50 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 16:09:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 471 transitions. [2023-12-02 16:09:33,036 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 471 transitions. Word has length 87 [2023-12-02 16:09:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:09:33,036 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 471 transitions. [2023-12-02 16:09:33,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 16:09:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 471 transitions. [2023-12-02 16:09:33,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 16:09:33,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:09:33,038 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:09:33,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 16:09:33,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 16:09:33,240 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:09:33,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:09:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash 384329283, now seen corresponding path program 1 times [2023-12-02 16:09:33,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:09:33,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562555496] [2023-12-02 16:09:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:09:33,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:09:33,246 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:09:33,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148320740] [2023-12-02 16:09:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:09:33,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:09:33,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:09:33,247 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:09:33,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 16:09:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:09:33,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:09:33,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:09:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 16:09:33,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:09:33,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:09:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562555496] [2023-12-02 16:09:33,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:09:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148320740] [2023-12-02 16:09:33,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148320740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:09:33,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [141433875] [2023-12-02 16:09:33,749 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:09:33,749 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:09:33,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:09:33,750 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:09:33,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:09:50,757 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:09:50,759 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:10:05,645 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20115#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ 4611686018427387903 |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~b~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:10:05,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:10:05,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:10:05,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 16:10:05,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525141355] [2023-12-02 16:10:05,645 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:10:05,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:10:05,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:10:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1641, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 16:10:05,647 INFO L87 Difference]: Start difference. First operand 391 states and 471 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 16:10:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:06,084 INFO L93 Difference]: Finished difference Result 477 states and 568 transitions. [2023-12-02 16:10:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:10:06,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 88 [2023-12-02 16:10:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:06,087 INFO L225 Difference]: With dead ends: 477 [2023-12-02 16:10:06,087 INFO L226 Difference]: Without dead ends: 474 [2023-12-02 16:10:06,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 143 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=346, Invalid=1724, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 16:10:06,089 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 121 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:06,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 268 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:10:06,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-02 16:10:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 445. [2023-12-02 16:10:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 360 states have (on average 1.1916666666666667) internal successors, (429), 377 states have internal predecessors, (429), 58 states have call successors, (58), 10 states have call predecessors, (58), 10 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 16:10:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 545 transitions. [2023-12-02 16:10:06,126 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 545 transitions. Word has length 88 [2023-12-02 16:10:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:06,126 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 545 transitions. [2023-12-02 16:10:06,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 16:10:06,126 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 545 transitions. [2023-12-02 16:10:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 16:10:06,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:06,127 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:10:06,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 16:10:06,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:06,328 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:10:06,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash -970694051, now seen corresponding path program 1 times [2023-12-02 16:10:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:06,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424398433] [2023-12-02 16:10:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:06,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:06,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:10:06,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664172333] [2023-12-02 16:10:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:06,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:10:06,335 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:10:06,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 16:10:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:06,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:10:06,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:10:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 16:10:06,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:10:06,458 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:06,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424398433] [2023-12-02 16:10:06,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:10:06,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664172333] [2023-12-02 16:10:06,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664172333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:10:06,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:10:06,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:10:06,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134026338] [2023-12-02 16:10:06,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:10:06,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:10:06,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:06,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:10:06,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:10:06,459 INFO L87 Difference]: Start difference. First operand 445 states and 545 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 16:10:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:06,828 INFO L93 Difference]: Finished difference Result 580 states and 703 transitions. [2023-12-02 16:10:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:10:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 89 [2023-12-02 16:10:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:06,831 INFO L225 Difference]: With dead ends: 580 [2023-12-02 16:10:06,831 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 16:10:06,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:10:06,832 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:06,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 424 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:10:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 16:10:06,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 538. [2023-12-02 16:10:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 439 states have (on average 1.2118451025056947) internal successors, (532), 456 states have internal predecessors, (532), 72 states have call successors, (72), 10 states have call predecessors, (72), 10 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 16:10:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 676 transitions. [2023-12-02 16:10:06,878 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 676 transitions. Word has length 89 [2023-12-02 16:10:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:06,878 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 676 transitions. [2023-12-02 16:10:06,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 16:10:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 676 transitions. [2023-12-02 16:10:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 16:10:06,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:06,879 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:10:06,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 16:10:07,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:07,080 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:10:07,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1838688727, now seen corresponding path program 2 times [2023-12-02 16:10:07,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:07,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029508829] [2023-12-02 16:10:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:07,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:10:07,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454266220] [2023-12-02 16:10:07,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:10:07,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:07,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:10:07,089 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:10:07,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 16:10:07,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:10:07,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:10:07,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:10:07,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:10:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-02 16:10:07,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:10:07,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029508829] [2023-12-02 16:10:07,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:10:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454266220] [2023-12-02 16:10:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454266220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:10:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1421347967] [2023-12-02 16:10:07,917 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 16:10:07,917 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:10:07,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:10:07,917 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:10:07,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:10:11,492 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:10:11,493 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:10:22,242 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23174#(and (exists ((|v_ULTIMATE.start_main_#t~post7#1_101| Int)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) (= ~counter~0 (+ |v_ULTIMATE.start_main_#t~post7#1_101| 1)) (<= |v_ULTIMATE.start_main_#t~post7#1_101| 4) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 1 (div |ULTIMATE.start_main_~b~0#1| 2)) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 3 ~counter~0))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:10:22,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:10:22,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:10:22,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 16:10:22,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163846857] [2023-12-02 16:10:22,242 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:10:22,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:10:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:10:22,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:10:22,244 INFO L87 Difference]: Start difference. First operand 538 states and 676 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 16:10:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:24,320 INFO L93 Difference]: Finished difference Result 726 states and 901 transitions. [2023-12-02 16:10:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:10:24,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2023-12-02 16:10:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:24,324 INFO L225 Difference]: With dead ends: 726 [2023-12-02 16:10:24,324 INFO L226 Difference]: Without dead ends: 724 [2023-12-02 16:10:24,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 33 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2023-12-02 16:10:24,325 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 152 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:24,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 362 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 16:10:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-12-02 16:10:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 538. [2023-12-02 16:10:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 439 states have (on average 1.2072892938496582) internal successors, (530), 456 states have internal predecessors, (530), 72 states have call successors, (72), 10 states have call predecessors, (72), 10 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 16:10:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 674 transitions. [2023-12-02 16:10:24,405 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 674 transitions. Word has length 90 [2023-12-02 16:10:24,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:24,406 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 674 transitions. [2023-12-02 16:10:24,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 16:10:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 674 transitions. [2023-12-02 16:10:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 16:10:24,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:24,407 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:10:24,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 16:10:24,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 16:10:24,607 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:10:24,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash -26744443, now seen corresponding path program 1 times [2023-12-02 16:10:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:24,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176147168] [2023-12-02 16:10:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:24,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:10:24,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980915056] [2023-12-02 16:10:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:24,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:24,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:10:24,616 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:10:24,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 16:10:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:24,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:10:24,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:10:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 16:10:25,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:10:25,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176147168] [2023-12-02 16:10:25,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:10:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980915056] [2023-12-02 16:10:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980915056] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:10:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1814082692] [2023-12-02 16:10:25,278 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:10:25,279 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:10:25,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:10:25,279 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:10:25,279 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:10:39,380 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:10:39,381 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:10:51,418 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25043#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (<= ~counter~0 5) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~b~0#1|)) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))' at error location [2023-12-02 16:10:51,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:10:51,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:10:51,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 16:10:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485412013] [2023-12-02 16:10:51,419 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:10:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:10:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:10:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:10:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 16:10:51,421 INFO L87 Difference]: Start difference. First operand 538 states and 674 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 16:10:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:10:51,854 INFO L93 Difference]: Finished difference Result 557 states and 684 transitions. [2023-12-02 16:10:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:10:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 90 [2023-12-02 16:10:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:10:51,857 INFO L225 Difference]: With dead ends: 557 [2023-12-02 16:10:51,857 INFO L226 Difference]: Without dead ends: 550 [2023-12-02 16:10:51,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 147 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=369, Invalid=1887, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 16:10:51,859 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 78 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:10:51,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 265 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:10:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-02 16:10:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 536. [2023-12-02 16:10:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 437 states have (on average 1.196796338672769) internal successors, (523), 454 states have internal predecessors, (523), 72 states have call successors, (72), 10 states have call predecessors, (72), 10 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 16:10:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 667 transitions. [2023-12-02 16:10:51,906 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 667 transitions. Word has length 90 [2023-12-02 16:10:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:10:51,907 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 667 transitions. [2023-12-02 16:10:51,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 16:10:51,907 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 667 transitions. [2023-12-02 16:10:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:10:51,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:10:51,908 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:10:51,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-02 16:10:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:52,108 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:10:52,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:10:52,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1073718303, now seen corresponding path program 1 times [2023-12-02 16:10:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:10:52,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339615875] [2023-12-02 16:10:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:10:52,118 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:10:52,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148591150] [2023-12-02 16:10:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:10:52,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:10:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:10:52,119 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:10:52,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 16:10:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:10:52,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:10:52,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:10:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 125 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 16:10:52,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:10:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-02 16:10:52,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:10:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339615875] [2023-12-02 16:10:52,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:10:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148591150] [2023-12-02 16:10:52,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148591150] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:10:52,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [969095582] [2023-12-02 16:10:52,457 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:10:52,457 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:10:52,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:10:52,457 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:10:52,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:11:05,255 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:11:05,257 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:11:13,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27006#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 16:11:13,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:11:13,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:11:13,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2023-12-02 16:11:13,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402205891] [2023-12-02 16:11:13,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:11:13,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:11:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:11:13,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:11:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2027, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 16:11:13,033 INFO L87 Difference]: Start difference. First operand 536 states and 667 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-02 16:11:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:11:13,254 INFO L93 Difference]: Finished difference Result 752 states and 958 transitions. [2023-12-02 16:11:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 16:11:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 102 [2023-12-02 16:11:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:11:13,257 INFO L225 Difference]: With dead ends: 752 [2023-12-02 16:11:13,258 INFO L226 Difference]: Without dead ends: 536 [2023-12-02 16:11:13,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 241 SyntacticMatches, 16 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=421, Invalid=3119, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 16:11:13,260 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 43 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:11:13,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 513 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:11:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-12-02 16:11:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2023-12-02 16:11:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 437 states have (on average 1.194508009153318) internal successors, (522), 454 states have internal predecessors, (522), 72 states have call successors, (72), 10 states have call predecessors, (72), 10 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-02 16:11:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 666 transitions. [2023-12-02 16:11:13,334 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 666 transitions. Word has length 102 [2023-12-02 16:11:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:11:13,334 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 666 transitions. [2023-12-02 16:11:13,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 4 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-02 16:11:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 666 transitions. [2023-12-02 16:11:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 16:11:13,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:11:13,336 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:11:13,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 16:11:13,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-02 16:11:13,539 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:11:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:11:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1902426035, now seen corresponding path program 2 times [2023-12-02 16:11:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:11:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635745808] [2023-12-02 16:11:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:11:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:11:13,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:11:13,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558307532] [2023-12-02 16:11:13,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:11:13,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:11:13,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:11:13,547 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:11:13,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 16:11:13,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 16:11:13,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:11:13,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:11:13,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:11:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-02 16:11:25,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:11:25,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:11:25,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635745808] [2023-12-02 16:11:25,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:11:25,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558307532] [2023-12-02 16:11:25,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558307532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:11:25,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1947254954] [2023-12-02 16:11:25,611 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:11:25,611 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:11:25,612 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:11:25,612 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:11:25,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:11:38,173 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:11:38,174 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:12:28,457 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28960#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 16:12:28,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:12:28,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:12:28,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 16:12:28,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024130992] [2023-12-02 16:12:28,457 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:12:28,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:12:28,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:12:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2104, Unknown=8, NotChecked=0, Total=2450 [2023-12-02 16:12:28,459 INFO L87 Difference]: Start difference. First operand 536 states and 666 transitions. Second operand has 10 states, 8 states have (on average 8.875) internal successors, (71), 10 states have internal predecessors, (71), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 16:12:31,329 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 16:12:34,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:36,516 WARN L539 Checker$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 16:12:38,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:40,594 WARN L539 Checker$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 16:12:42,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:44,999 WARN L539 Checker$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 16:12:47,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:48,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:51,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:54,485 WARN L539 Checker$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 16:12:58,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:12:59,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:00,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:02,739 WARN L539 Checker$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 16:13:05,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:06,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:10,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:11,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:14,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:16,745 WARN L539 Checker$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 16:13:18,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:21,800 WARN L539 Checker$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 16:13:25,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:28,401 WARN L539 Checker$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 16:13:30,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:32,821 WARN L539 Checker$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 16:13:34,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:36,913 WARN L539 Checker$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 16:13:39,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:40,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:41,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:44,624 WARN L539 Checker$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 16:13:47,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:48,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:50,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:52,783 WARN L539 Checker$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 16:13:54,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:13:57,111 WARN L539 Checker$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 16:13:59,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:01,648 WARN L539 Checker$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 16:14:02,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:04,925 WARN L539 Checker$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 16:14:07,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:09,087 WARN L539 Checker$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 16:14:11,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:13,244 WARN L539 Checker$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 16:14:17,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:18,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:24,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:27,436 WARN L539 Checker$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 16:14:29,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:32,055 WARN L539 Checker$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 16:14:33,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:35,887 WARN L539 Checker$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 16:14:39,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:44,450 WARN L539 Checker$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 16:14:47,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:49,612 WARN L539 Checker$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 16:14:51,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:53,635 WARN L539 Checker$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 16:14:55,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:14:57,992 WARN L539 Checker$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 16:14:59,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:15:03,148 WARN L539 Checker$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 16:15:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:15:03,284 INFO L93 Difference]: Finished difference Result 712 states and 891 transitions. [2023-12-02 16:15:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:15:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.875) internal successors, (71), 10 states have internal predecessors, (71), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2023-12-02 16:15:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:15:03,289 INFO L225 Difference]: With dead ends: 712 [2023-12-02 16:15:03,289 INFO L226 Difference]: Without dead ends: 705 [2023-12-02 16:15:03,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 162 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 69.1s TimeCoverageRelationStatistics Valid=373, Invalid=2587, Unknown=10, NotChecked=0, Total=2970 [2023-12-02 16:15:03,292 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 78 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 12 mSolverCounterUnsat, 66 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 66 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:15:03,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 344 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 615 Invalid, 66 Unknown, 0 Unchecked, 146.9s Time] [2023-12-02 16:15:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-02 16:15:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 668. [2023-12-02 16:15:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 550 states have (on average 1.2145454545454546) internal successors, (668), 567 states have internal predecessors, (668), 91 states have call successors, (91), 10 states have call predecessors, (91), 10 states have return successors, (91), 90 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 16:15:03,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 850 transitions. [2023-12-02 16:15:03,419 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 850 transitions. Word has length 102 [2023-12-02 16:15:03,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:15:03,420 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 850 transitions. [2023-12-02 16:15:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.875) internal successors, (71), 10 states have internal predecessors, (71), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 16:15:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 850 transitions. [2023-12-02 16:15:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 16:15:03,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:15:03,422 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:15:03,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-02 16:15:03,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 16:15:03,622 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:15:03,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:15:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash 650033450, now seen corresponding path program 1 times [2023-12-02 16:15:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:15:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046732138] [2023-12-02 16:15:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:15:03,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:15:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952614078] [2023-12-02 16:15:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:15:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:15:03,632 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:15:03,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 16:15:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:15:03,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:15:03,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:15:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 16:15:03,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:15:03,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:15:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046732138] [2023-12-02 16:15:03,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:15:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952614078] [2023-12-02 16:15:03,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952614078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:15:03,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:15:03,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:15:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439750894] [2023-12-02 16:15:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:15:03,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:15:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:15:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:15:03,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:15:03,755 INFO L87 Difference]: Start difference. First operand 668 states and 850 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 16:15:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:15:03,867 INFO L93 Difference]: Finished difference Result 673 states and 856 transitions. [2023-12-02 16:15:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:15:03,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2023-12-02 16:15:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:15:03,870 INFO L225 Difference]: With dead ends: 673 [2023-12-02 16:15:03,870 INFO L226 Difference]: Without dead ends: 669 [2023-12-02 16:15:03,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:15:03,871 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:15:03,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 54 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:15:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-12-02 16:15:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 627. [2023-12-02 16:15:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 517 states have (on average 1.1876208897485494) internal successors, (614), 533 states have internal predecessors, (614), 84 states have call successors, (84), 10 states have call predecessors, (84), 10 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-02 16:15:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 782 transitions. [2023-12-02 16:15:03,935 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 782 transitions. Word has length 105 [2023-12-02 16:15:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:15:03,935 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 782 transitions. [2023-12-02 16:15:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 16:15:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 782 transitions. [2023-12-02 16:15:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 16:15:03,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:15:03,936 INFO L195 NwaCegarLoop]: trace histogram [11, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 16:15:03,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 16:15:04,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-02 16:15:04,137 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:15:04,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:15:04,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1214385573, now seen corresponding path program 1 times [2023-12-02 16:15:04,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:15:04,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984109166] [2023-12-02 16:15:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:04,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:15:04,143 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:15:04,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666357826] [2023-12-02 16:15:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:04,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:15:04,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:15:04,145 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:15:04,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 16:15:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:15:04,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:15:04,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:15:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 16:15:04,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:15:04,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:15:04,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984109166] [2023-12-02 16:15:04,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:15:04,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666357826] [2023-12-02 16:15:04,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666357826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:15:04,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:15:04,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:15:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905112824] [2023-12-02 16:15:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:15:04,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:15:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:15:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:15:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:15:04,264 INFO L87 Difference]: Start difference. First operand 627 states and 782 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 16:15:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:15:04,583 INFO L93 Difference]: Finished difference Result 897 states and 1114 transitions. [2023-12-02 16:15:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:15:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 105 [2023-12-02 16:15:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:15:04,585 INFO L225 Difference]: With dead ends: 897 [2023-12-02 16:15:04,585 INFO L226 Difference]: Without dead ends: 539 [2023-12-02 16:15:04,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:15:04,586 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 73 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:15:04,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 128 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:15:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-02 16:15:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 513. [2023-12-02 16:15:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 423 states have (on average 1.210401891252955) internal successors, (512), 438 states have internal predecessors, (512), 67 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 16:15:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 646 transitions. [2023-12-02 16:15:04,657 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 646 transitions. Word has length 105 [2023-12-02 16:15:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:15:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 646 transitions. [2023-12-02 16:15:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 16:15:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 646 transitions. [2023-12-02 16:15:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 16:15:04,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:15:04,658 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:15:04,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 16:15:04,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 16:15:04,859 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:15:04,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:15:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash 611677414, now seen corresponding path program 1 times [2023-12-02 16:15:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:15:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831615797] [2023-12-02 16:15:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:15:04,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:15:04,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103426243] [2023-12-02 16:15:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:04,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:15:04,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:15:04,867 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:15:04,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 16:15:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:15:04,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:15:04,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:15:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 16:15:05,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:15:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 16:15:05,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:15:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831615797] [2023-12-02 16:15:05,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:15:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103426243] [2023-12-02 16:15:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103426243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:15:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726416105] [2023-12-02 16:15:05,539 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:15:05,540 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:15:05,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:15:05,540 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:15:05,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:15:23,841 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:15:23,842 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:15:39,824 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35209#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (or (< ~counter~0 6) (and (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807))) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2023-12-02 16:15:39,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:15:39,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:15:39,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 16:15:39,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013307346] [2023-12-02 16:15:39,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:15:39,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:15:39,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:15:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:15:39,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 16:15:39,827 INFO L87 Difference]: Start difference. First operand 513 states and 646 transitions. Second operand has 12 states, 11 states have (on average 13.363636363636363) internal successors, (147), 12 states have internal predecessors, (147), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-02 16:15:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:15:42,721 INFO L93 Difference]: Finished difference Result 671 states and 822 transitions. [2023-12-02 16:15:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 16:15:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.363636363636363) internal successors, (147), 12 states have internal predecessors, (147), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 115 [2023-12-02 16:15:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:15:42,726 INFO L225 Difference]: With dead ends: 671 [2023-12-02 16:15:42,726 INFO L226 Difference]: Without dead ends: 670 [2023-12-02 16:15:42,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 289 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=837, Invalid=3719, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 16:15:42,728 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 834 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:15:42,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 362 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 16:15:42,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-02 16:15:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 525. [2023-12-02 16:15:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 432 states have (on average 1.1990740740740742) internal successors, (518), 447 states have internal predecessors, (518), 70 states have call successors, (70), 7 states have call predecessors, (70), 7 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 16:15:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 658 transitions. [2023-12-02 16:15:42,815 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 658 transitions. Word has length 115 [2023-12-02 16:15:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:15:42,815 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 658 transitions. [2023-12-02 16:15:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.363636363636363) internal successors, (147), 12 states have internal predecessors, (147), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-02 16:15:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 658 transitions. [2023-12-02 16:15:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 16:15:42,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:15:42,817 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:15:42,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 16:15:43,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 16:15:43,018 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:15:43,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:15:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash -578970038, now seen corresponding path program 1 times [2023-12-02 16:15:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:15:43,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629197875] [2023-12-02 16:15:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:43,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:15:43,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:15:43,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65440703] [2023-12-02 16:15:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:15:43,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:15:43,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:15:43,029 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:15:43,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 16:15:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:15:43,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 16:15:43,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:15:43,378 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 16:15:43,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:15:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 16:15:43,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:15:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629197875] [2023-12-02 16:15:43,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:15:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65440703] [2023-12-02 16:15:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65440703] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:15:43,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1873985311] [2023-12-02 16:15:43,590 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:15:43,590 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:15:43,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:15:43,591 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:15:43,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:15:59,696 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:15:59,697 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:16:13,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1873985311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:16:13,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:16:13,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [6, 6] total 46 [2023-12-02 16:16:13,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205144814] [2023-12-02 16:16:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:16:13,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 16:16:13,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:16:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 16:16:13,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1801, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 16:16:13,705 INFO L87 Difference]: Start difference. First operand 525 states and 658 transitions. Second operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 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 16:16:26,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:26,200 INFO L93 Difference]: Finished difference Result 700 states and 870 transitions. [2023-12-02 16:16:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-02 16:16:26,200 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 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) Word has length 120 [2023-12-02 16:16:26,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:26,203 INFO L225 Difference]: With dead ends: 700 [2023-12-02 16:16:26,204 INFO L226 Difference]: Without dead ends: 663 [2023-12-02 16:16:26,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 302 SyntacticMatches, 12 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=1009, Invalid=4393, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 16:16:26,206 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 266 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:26,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 230 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-02 16:16:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-12-02 16:16:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 588. [2023-12-02 16:16:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 487 states have (on average 1.1827515400410678) internal successors, (576), 502 states have internal predecessors, (576), 77 states have call successors, (77), 8 states have call predecessors, (77), 8 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-12-02 16:16:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 730 transitions. [2023-12-02 16:16:26,279 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 730 transitions. Word has length 120 [2023-12-02 16:16:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:26,280 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 730 transitions. [2023-12-02 16:16:26,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 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 16:16:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 730 transitions. [2023-12-02 16:16:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-02 16:16:26,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:26,281 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:26,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 16:16:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:16:26,481 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:16:26,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:26,481 INFO L85 PathProgramCache]: Analyzing trace with hash 492302436, now seen corresponding path program 1 times [2023-12-02 16:16:26,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:16:26,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306637602] [2023-12-02 16:16:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:16:26,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:16:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700698765] [2023-12-02 16:16:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:16:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:16:26,490 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:16:26,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 16:16:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:26,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:16:26,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 16:16:26,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 16:16:26,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:16:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306637602] [2023-12-02 16:16:26,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:16:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700698765] [2023-12-02 16:16:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700698765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [818742375] [2023-12-02 16:16:26,967 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:16:26,967 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:16:26,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:16:26,967 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:16:26,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:16:43,065 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:16:43,066 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:16:56,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39801#(and (<= (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1| 1) (+ (* 2 |ULTIMATE.start_main_~b~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 1 |#StackHeapBarrier|) (= (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (+ 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= ~counter~0 2147483647) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|)))' at error location [2023-12-02 16:16:56,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:16:56,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:16:56,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-12-02 16:16:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981476603] [2023-12-02 16:16:56,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:16:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 16:16:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:16:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 16:16:56,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3279, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 16:16:56,406 INFO L87 Difference]: Start difference. First operand 588 states and 730 transitions. Second operand has 26 states, 25 states have (on average 6.72) internal successors, (168), 26 states have internal predecessors, (168), 10 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-02 16:16:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:16:57,236 INFO L93 Difference]: Finished difference Result 1089 states and 1332 transitions. [2023-12-02 16:16:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 16:16:57,237 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.72) internal successors, (168), 26 states have internal predecessors, (168), 10 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 123 [2023-12-02 16:16:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:16:57,241 INFO L225 Difference]: With dead ends: 1089 [2023-12-02 16:16:57,241 INFO L226 Difference]: Without dead ends: 1066 [2023-12-02 16:16:57,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 296 SyntacticMatches, 11 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3492 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=947, Invalid=6535, Unknown=0, NotChecked=0, Total=7482 [2023-12-02 16:16:57,245 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 220 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:16:57,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 781 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:16:57,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2023-12-02 16:16:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 973. [2023-12-02 16:16:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 814 states have (on average 1.1572481572481572) internal successors, (942), 835 states have internal predecessors, (942), 128 states have call successors, (128), 15 states have call predecessors, (128), 15 states have return successors, (128), 122 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-02 16:16:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1198 transitions. [2023-12-02 16:16:57,378 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1198 transitions. Word has length 123 [2023-12-02 16:16:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:16:57,378 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1198 transitions. [2023-12-02 16:16:57,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.72) internal successors, (168), 26 states have internal predecessors, (168), 10 states have call successors, (28), 6 states have call predecessors, (28), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-02 16:16:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1198 transitions. [2023-12-02 16:16:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 16:16:57,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:57,379 INFO L195 NwaCegarLoop]: trace histogram [14, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:57,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-02 16:16:57,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:16:57,580 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:16:57,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:57,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1250307486, now seen corresponding path program 1 times [2023-12-02 16:16:57,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:16:57,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010712683] [2023-12-02 16:16:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:57,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:16:57,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:16:57,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067718936] [2023-12-02 16:16:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:57,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:16:57,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:16:57,591 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:16:57,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 16:16:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:16:57,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:16:57,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:16:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 16:16:57,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:16:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 16:16:57,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:16:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010712683] [2023-12-02 16:16:57,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:16:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067718936] [2023-12-02 16:16:57,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067718936] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:16:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509692149] [2023-12-02 16:16:57,956 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:16:57,956 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:16:57,956 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:16:57,957 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:16:57,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:17:01,678 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 16:17:01,679 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:17:15,664 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43103#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 6 ~counter~0) (<= 2 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 9223372036854775808 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= ~counter~0 2147483647) (<= (+ (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 1) 0) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) 2147483647) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-12-02 16:17:15,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:17:15,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:17:15,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2023-12-02 16:17:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299374367] [2023-12-02 16:17:15,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:17:15,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 16:17:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:15,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 16:17:15,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-12-02 16:17:15,666 INFO L87 Difference]: Start difference. First operand 973 states and 1198 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-02 16:17:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:16,101 INFO L93 Difference]: Finished difference Result 1265 states and 1580 transitions. [2023-12-02 16:17:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:17:16,102 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 125 [2023-12-02 16:17:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:16,107 INFO L225 Difference]: With dead ends: 1265 [2023-12-02 16:17:16,107 INFO L226 Difference]: Without dead ends: 973 [2023-12-02 16:17:16,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 286 SyntacticMatches, 57 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=216, Invalid=1424, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 16:17:16,109 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 32 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:16,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 519 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:17:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-12-02 16:17:16,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 973. [2023-12-02 16:17:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 814 states have (on average 1.156019656019656) internal successors, (941), 835 states have internal predecessors, (941), 128 states have call successors, (128), 15 states have call predecessors, (128), 15 states have return successors, (128), 122 states have call predecessors, (128), 128 states have call successors, (128) [2023-12-02 16:17:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1197 transitions. [2023-12-02 16:17:16,255 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1197 transitions. Word has length 125 [2023-12-02 16:17:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:16,256 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1197 transitions. [2023-12-02 16:17:16,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-12-02 16:17:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1197 transitions. [2023-12-02 16:17:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 16:17:16,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:16,257 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 16:17:16,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 16:17:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-02 16:17:16,458 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:17:16,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1387256852, now seen corresponding path program 3 times [2023-12-02 16:17:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:16,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952586871] [2023-12-02 16:17:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:16,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974177645] [2023-12-02 16:17:16,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 16:17:16,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:16,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:16,470 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:16,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 16:17:16,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 16:17:16,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:17:16,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:17:16,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:17:16,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:17:16,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952586871] [2023-12-02 16:17:16,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974177645] [2023-12-02 16:17:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974177645] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:17:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2069186642] [2023-12-02 16:17:16,983 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 16:17:16,983 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:17:16,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:17:16,983 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:17:16,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:17:30,476 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:17:30,477 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:17:40,773 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '46636#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 16:17:40,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:17:40,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:17:40,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 16:17:40,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874534786] [2023-12-02 16:17:40,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 16:17:40,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:17:40,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:17:40,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:17:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2175, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 16:17:40,775 INFO L87 Difference]: Start difference. First operand 973 states and 1197 transitions. Second operand has 14 states, 13 states have (on average 13.923076923076923) internal successors, (181), 14 states have internal predecessors, (181), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-02 16:17:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:17:42,963 INFO L93 Difference]: Finished difference Result 1987 states and 2453 transitions. [2023-12-02 16:17:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 16:17:42,964 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.923076923076923) internal successors, (181), 14 states have internal predecessors, (181), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 135 [2023-12-02 16:17:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:17:42,972 INFO L225 Difference]: With dead ends: 1987 [2023-12-02 16:17:42,972 INFO L226 Difference]: Without dead ends: 1986 [2023-12-02 16:17:42,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 344 SyntacticMatches, 10 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=574, Invalid=3332, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 16:17:42,973 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1005 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:17:42,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 527 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 16:17:42,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2023-12-02 16:17:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1372. [2023-12-02 16:17:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1153 states have (on average 1.1777970511708586) internal successors, (1358), 1173 states have internal predecessors, (1358), 188 states have call successors, (188), 15 states have call predecessors, (188), 15 states have return successors, (188), 183 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-02 16:17:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1734 transitions. [2023-12-02 16:17:43,170 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1734 transitions. Word has length 135 [2023-12-02 16:17:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:17:43,171 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 1734 transitions. [2023-12-02 16:17:43,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.923076923076923) internal successors, (181), 14 states have internal predecessors, (181), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-02 16:17:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1734 transitions. [2023-12-02 16:17:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 16:17:43,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:17:43,172 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 16:17:43,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 16:17:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 16:17:43,373 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:17:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:17:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1643408197, now seen corresponding path program 1 times [2023-12-02 16:17:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:17:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923442666] [2023-12-02 16:17:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:17:43,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:17:43,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304505333] [2023-12-02 16:17:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:43,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:43,383 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:43,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 16:17:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:43,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:17:43,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:17:44,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:44,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923442666] [2023-12-02 16:17:44,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:17:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304505333] [2023-12-02 16:17:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304505333] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:17:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2136040773] [2023-12-02 16:17:44,280 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 16:17:44,280 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:17:44,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:17:44,281 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:17:44,281 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:17:57,671 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:17:57,672 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:18:13,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51168#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:18:13,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:18:13,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:18:13,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 16:18:13,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839237545] [2023-12-02 16:18:13,182 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:18:13,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:18:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:18:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:18:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2255, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 16:18:13,184 INFO L87 Difference]: Start difference. First operand 1372 states and 1734 transitions. Second operand has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 10 states have internal predecessors, (97), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 16:18:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:18:13,984 INFO L93 Difference]: Finished difference Result 1509 states and 1885 transitions. [2023-12-02 16:18:13,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:18:13,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 10 states have internal predecessors, (97), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 141 [2023-12-02 16:18:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:18:13,991 INFO L225 Difference]: With dead ends: 1509 [2023-12-02 16:18:13,991 INFO L226 Difference]: Without dead ends: 1507 [2023-12-02 16:18:13,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 237 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 16:18:13,993 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 165 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:18:13,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 426 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:18:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2023-12-02 16:18:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1372. [2023-12-02 16:18:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1153 states have (on average 1.1769297484822203) internal successors, (1357), 1173 states have internal predecessors, (1357), 188 states have call successors, (188), 15 states have call predecessors, (188), 15 states have return successors, (188), 183 states have call predecessors, (188), 188 states have call successors, (188) [2023-12-02 16:18:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1733 transitions. [2023-12-02 16:18:14,255 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1733 transitions. Word has length 141 [2023-12-02 16:18:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:18:14,256 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 1733 transitions. [2023-12-02 16:18:14,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 10 states have internal predecessors, (97), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 16:18:14,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1733 transitions. [2023-12-02 16:18:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 16:18:14,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:18:14,258 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-02 16:18:14,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 16:18:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 16:18:14,459 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:18:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:18:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 456173903, now seen corresponding path program 2 times [2023-12-02 16:18:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:18:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60303009] [2023-12-02 16:18:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:18:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:18:14,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:18:14,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066180992] [2023-12-02 16:18:14,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:18:14,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:18:14,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:18:14,473 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:18:14,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 16:18:14,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 16:18:14,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:18:14,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 16:18:14,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:18:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 28 proven. 97 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-02 16:18:21,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:18:25,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:18:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60303009] [2023-12-02 16:18:25,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:18:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066180992] [2023-12-02 16:18:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066180992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:18:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [526140948] [2023-12-02 16:18:25,196 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 16:18:25,196 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:18:25,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:18:25,196 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:18:25,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:18:38,146 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:18:38,147 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:19:45,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55145#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 16:19:45,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:19:45,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:19:45,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 16:19:45,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635120751] [2023-12-02 16:19:45,702 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:19:45,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:19:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:19:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:19:45,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2782, Unknown=7, NotChecked=0, Total=3192 [2023-12-02 16:19:45,704 INFO L87 Difference]: Start difference. First operand 1372 states and 1733 transitions. Second operand has 14 states, 11 states have (on average 8.0) internal successors, (88), 14 states have internal predecessors, (88), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 16:19:50,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:19:59,574 WARN L539 Checker$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 16:20:01,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:08,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:10,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:15,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:17,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:22,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:24,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:26,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:29,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:31,480 WARN L539 Checker$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 16:20:33,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:38,249 WARN L539 Checker$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 16:20:43,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:20:45,642 WARN L539 Checker$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 16:20:52,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:21:00,831 WARN L539 Checker$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 16:21:02,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:21:15,544 WARN L539 Checker$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 16:21:16,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 16:21:17,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:17,127 INFO L93 Difference]: Finished difference Result 1768 states and 2228 transitions. [2023-12-02 16:21:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:21:17,128 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 8.0) internal successors, (88), 14 states have internal predecessors, (88), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 141 [2023-12-02 16:21:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:17,136 INFO L225 Difference]: With dead ends: 1768 [2023-12-02 16:21:17,136 INFO L226 Difference]: Without dead ends: 1766 [2023-12-02 16:21:17,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 235 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 97.1s TimeCoverageRelationStatistics Valid=487, Invalid=3792, Unknown=11, NotChecked=0, Total=4290 [2023-12-02 16:21:17,138 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 173 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 24 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:17,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 682 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1180 Invalid, 12 Unknown, 0 Unchecked, 70.0s Time] [2023-12-02 16:21:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-12-02 16:21:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1423. [2023-12-02 16:21:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1201 states have (on average 1.1781848459616986) internal successors, (1415), 1221 states have internal predecessors, (1415), 191 states have call successors, (191), 15 states have call predecessors, (191), 15 states have return successors, (191), 186 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-02 16:21:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1797 transitions. [2023-12-02 16:21:17,407 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1797 transitions. Word has length 141 [2023-12-02 16:21:17,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:17,407 INFO L495 AbstractCegarLoop]: Abstraction has 1423 states and 1797 transitions. [2023-12-02 16:21:17,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 8.0) internal successors, (88), 14 states have internal predecessors, (88), 4 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 16:21:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1797 transitions. [2023-12-02 16:21:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 16:21:17,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:17,408 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:17,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-02 16:21:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:17,609 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:21:17,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash 593953592, now seen corresponding path program 1 times [2023-12-02 16:21:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20074641] [2023-12-02 16:21:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:17,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:17,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367756379] [2023-12-02 16:21:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:17,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:17,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:17,621 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:17,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 16:21:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:17,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:21:17,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-02 16:21:17,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:21:17,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20074641] [2023-12-02 16:21:17,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367756379] [2023-12-02 16:21:17,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367756379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:21:17,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:21:17,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:21:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570962109] [2023-12-02 16:21:17,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:21:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:21:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:17,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:21:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:21:17,780 INFO L87 Difference]: Start difference. First operand 1423 states and 1797 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 16:21:18,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:18,424 INFO L93 Difference]: Finished difference Result 1474 states and 1833 transitions. [2023-12-02 16:21:18,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:21:18,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 142 [2023-12-02 16:21:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:18,432 INFO L225 Difference]: With dead ends: 1474 [2023-12-02 16:21:18,433 INFO L226 Difference]: Without dead ends: 1471 [2023-12-02 16:21:18,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:21:18,434 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 97 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:18,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 199 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:21:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2023-12-02 16:21:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1202. [2023-12-02 16:21:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1015 states have (on average 1.1497536945812807) internal successors, (1167), 1032 states have internal predecessors, (1167), 159 states have call successors, (159), 15 states have call predecessors, (159), 15 states have return successors, (159), 154 states have call predecessors, (159), 159 states have call successors, (159) [2023-12-02 16:21:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1485 transitions. [2023-12-02 16:21:18,713 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1485 transitions. Word has length 142 [2023-12-02 16:21:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:18,713 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1485 transitions. [2023-12-02 16:21:18,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-02 16:21:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1485 transitions. [2023-12-02 16:21:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:21:18,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:18,715 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:18,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 16:21:18,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:18,916 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:21:18,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:18,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1232692317, now seen corresponding path program 1 times [2023-12-02 16:21:18,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:18,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170695688] [2023-12-02 16:21:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:18,924 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:18,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411934982] [2023-12-02 16:21:18,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:18,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:18,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:18,925 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:18,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 16:21:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:19,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 16:21:19,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 16:21:20,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:21:20,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170695688] [2023-12-02 16:21:20,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411934982] [2023-12-02 16:21:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411934982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:21:20,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013652216] [2023-12-02 16:21:20,511 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 16:21:20,511 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:21:20,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:21:20,512 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:21:20,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:21:33,803 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:21:33,804 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:21:45,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '63142#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 6 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 16:21:45,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:21:45,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:21:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-12-02 16:21:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418056726] [2023-12-02 16:21:45,327 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:21:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 16:21:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 16:21:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3254, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 16:21:45,329 INFO L87 Difference]: Start difference. First operand 1202 states and 1485 transitions. Second operand has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 16:21:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:46,728 INFO L93 Difference]: Finished difference Result 1396 states and 1725 transitions. [2023-12-02 16:21:46,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:21:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 143 [2023-12-02 16:21:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:46,737 INFO L225 Difference]: With dead ends: 1396 [2023-12-02 16:21:46,737 INFO L226 Difference]: Without dead ends: 1389 [2023-12-02 16:21:46,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 239 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=427, Invalid=3479, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 16:21:46,739 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 129 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:46,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 632 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 16:21:46,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2023-12-02 16:21:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1310. [2023-12-02 16:21:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1106 states have (on average 1.1537070524412296) internal successors, (1276), 1123 states have internal predecessors, (1276), 176 states have call successors, (176), 15 states have call predecessors, (176), 15 states have return successors, (176), 171 states have call predecessors, (176), 176 states have call successors, (176) [2023-12-02 16:21:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1628 transitions. [2023-12-02 16:21:47,005 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1628 transitions. Word has length 143 [2023-12-02 16:21:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:47,005 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1628 transitions. [2023-12-02 16:21:47,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 14 states have internal predecessors, (99), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 16:21:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1628 transitions. [2023-12-02 16:21:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:21:47,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:47,007 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:47,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 16:21:47,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:47,207 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:21:47,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:47,208 INFO L85 PathProgramCache]: Analyzing trace with hash 296461297, now seen corresponding path program 2 times [2023-12-02 16:21:47,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:47,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103567592] [2023-12-02 16:21:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:47,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:47,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:21:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156319803] [2023-12-02 16:21:47,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 16:21:47,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:21:47,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:21:47,218 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:21:47,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 16:21:47,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 16:21:47,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 16:21:47,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 16:21:47,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:21:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 11 proven. 82 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-02 16:21:47,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:21:48,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103567592] [2023-12-02 16:21:48,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:21:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156319803] [2023-12-02 16:21:48,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156319803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:21:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1987233757] [2023-12-02 16:21:48,386 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 16:21:48,387 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:21:48,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:21:48,387 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:21:48,387 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:22:01,639 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 16:22:01,640 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:22:14,969 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '66929#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 6 ~counter~0) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 16:22:14,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:22:14,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:22:14,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 16:22:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77307663] [2023-12-02 16:22:14,970 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 16:22:14,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:22:14,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:22:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:22:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=3014, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 16:22:14,972 INFO L87 Difference]: Start difference. First operand 1310 states and 1628 transitions. Second operand has 11 states, 9 states have (on average 9.88888888888889) internal successors, (89), 11 states have internal predecessors, (89), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 16:22:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:22:16,847 INFO L93 Difference]: Finished difference Result 1477 states and 1827 transitions. [2023-12-02 16:22:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 16:22:16,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.88888888888889) internal successors, (89), 11 states have internal predecessors, (89), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 143 [2023-12-02 16:22:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:22:16,854 INFO L225 Difference]: With dead ends: 1477 [2023-12-02 16:22:16,854 INFO L226 Difference]: Without dead ends: 1464 [2023-12-02 16:22:16,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=596, Invalid=4516, Unknown=0, NotChecked=0, Total=5112 [2023-12-02 16:22:16,856 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 478 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:22:16,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 225 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:22:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2023-12-02 16:22:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1242. [2023-12-02 16:22:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1052 states have (on average 1.1330798479087452) internal successors, (1192), 1068 states have internal predecessors, (1192), 163 states have call successors, (163), 15 states have call predecessors, (163), 15 states have return successors, (163), 158 states have call predecessors, (163), 163 states have call successors, (163) [2023-12-02 16:22:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1518 transitions. [2023-12-02 16:22:17,117 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1518 transitions. Word has length 143 [2023-12-02 16:22:17,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:22:17,118 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1518 transitions. [2023-12-02 16:22:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.88888888888889) internal successors, (89), 11 states have internal predecessors, (89), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 16:22:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1518 transitions. [2023-12-02 16:22:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 16:22:17,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:22:17,119 INFO L195 NwaCegarLoop]: trace histogram [18, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 16:22:17,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-02 16:22:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:22:17,320 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 16:22:17,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:22:17,320 INFO L85 PathProgramCache]: Analyzing trace with hash 598507248, now seen corresponding path program 1 times [2023-12-02 16:22:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:22:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182866387] [2023-12-02 16:22:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:22:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:22:17,333 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:22:17,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289665917] [2023-12-02 16:22:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:22:17,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:22:17,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:22:17,334 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:22:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_560247f6-4e18-4f03-8f64-fe5d12d9f2a8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-02 16:22:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:22:17,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:22:17,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:22:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-02 16:22:18,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:22:18,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:22:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182866387] [2023-12-02 16:22:18,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:22:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289665917] [2023-12-02 16:22:18,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289665917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:22:18,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [466993201] [2023-12-02 16:22:18,448 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2023-12-02 16:22:18,448 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:22:18,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:22:18,449 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:22:18,449 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs