./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/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_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/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_1d898aa4-77c2-4336-b711-e2caf1cc4625/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 881c8a19bc7d985c1c357993fa89c98038c14e3d30b81b5db0457e690440ac95 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:07:17,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:07:17,735 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 14:07:17,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:07:17,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:07:17,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:07:17,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:07:17,766 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:07:17,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:07:17,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:07:17,768 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:07:17,769 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:07:17,769 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:07:17,770 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:07:17,771 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:07:17,771 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:07:17,772 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:07:17,772 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:07:17,773 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:07:17,773 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:07:17,774 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:07:17,776 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:07:17,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:07:17,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:07:17,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:07:17,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:07:17,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:07:17,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:07:17,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:07:17,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:07:17,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:07:17,779 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:07:17,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:07:17,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:07:17,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:07:17,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:07:17,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:07:17,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:07:17,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:07:17,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:07:17,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:07:17,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:07:17,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:07:17,782 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:07:17,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:07:17,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:07:17,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:07:17,783 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:07:17,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:07:17,783 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_1d898aa4-77c2-4336-b711-e2caf1cc4625/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 881c8a19bc7d985c1c357993fa89c98038c14e3d30b81b5db0457e690440ac95 [2023-12-02 14:07:17,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:07:18,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:07:18,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:07:18,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:07:18,013 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:07:18,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c [2023-12-02 14:07:20,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:07:20,906 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:07:20,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound10.c [2023-12-02 14:07:20,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/data/54f12e09e/2856740506be464393abec461c3bded0/FLAG216451b81 [2023-12-02 14:07:20,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/data/54f12e09e/2856740506be464393abec461c3bded0 [2023-12-02 14:07:20,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:07:20,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:07:20,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:07:20,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:07:20,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:07:20,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:07:20" (1/1) ... [2023-12-02 14:07:20,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecf4ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:20, skipping insertion in model container [2023-12-02 14:07:20,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:07:20" (1/1) ... [2023-12-02 14:07:20,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:07:21,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:07:21,096 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:07:21,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:07:21,127 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:07:21,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21 WrapperNode [2023-12-02 14:07:21,127 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:07:21,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:07:21,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:07:21,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:07:21,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,164 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-12-02 14:07:21,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:07:21,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:07:21,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:07:21,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:07:21,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:07:21,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:07:21,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:07:21,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:07:21,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (1/1) ... [2023-12-02 14:07:21,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:07:21,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:21,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:07:21,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:07:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:07:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 14:07:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 14:07:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:07:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:07:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:07:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:07:21,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:07:21,317 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:07:21,320 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:07:21,547 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:07:21,581 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:07:21,581 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:07:21,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:07:21 BoogieIcfgContainer [2023-12-02 14:07:21,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:07:21,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:07:21,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:07:21,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:07:21,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:07:20" (1/3) ... [2023-12-02 14:07:21,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7334ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:07:21, skipping insertion in model container [2023-12-02 14:07:21,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:07:21" (2/3) ... [2023-12-02 14:07:21,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7334ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:07:21, skipping insertion in model container [2023-12-02 14:07:21,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:07:21" (3/3) ... [2023-12-02 14:07:21,591 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound10.c [2023-12-02 14:07:21,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:07:21,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-12-02 14:07:21,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:07:21,652 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;@4d0b11b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:07:21,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-12-02 14:07:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 14:07:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 14:07:21,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:21,662 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:21,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:21,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1089399791, now seen corresponding path program 1 times [2023-12-02 14:07:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:21,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344475867] [2023-12-02 14:07:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:21,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:21,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349164377] [2023-12-02 14:07:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:21,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:21,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:21,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:21,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 14:07:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:21,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 14:07:21,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:07:21,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:21,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344475867] [2023-12-02 14:07:21,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349164377] [2023-12-02 14:07:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349164377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:21,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:21,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:07:21,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254750782] [2023-12-02 14:07:21,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:21,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:07:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:07:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:22,000 INFO L87 Difference]: Start difference. First operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:07:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:22,181 INFO L93 Difference]: Finished difference Result 152 states and 178 transitions. [2023-12-02 14:07:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:07:22,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 14 [2023-12-02 14:07:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:22,190 INFO L225 Difference]: With dead ends: 152 [2023-12-02 14:07:22,190 INFO L226 Difference]: Without dead ends: 74 [2023-12-02 14:07:22,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:22,197 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 175 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:22,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 77 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:07:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-02 14:07:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-02 14:07:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.641025641025641) internal successors, (64), 62 states have internal predecessors, (64), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 14:07:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-12-02 14:07:22,236 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 14 [2023-12-02 14:07:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:22,237 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-12-02 14:07:22,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:07:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-12-02 14:07:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 14:07:22,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:22,240 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:22,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:07:22,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 14:07:22,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:22,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 588344897, now seen corresponding path program 1 times [2023-12-02 14:07:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280885133] [2023-12-02 14:07:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:22,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:22,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382087016] [2023-12-02 14:07:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:22,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:22,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:22,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:22,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 14:07:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:22,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 14:07:22,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:07:22,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:22,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:22,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280885133] [2023-12-02 14:07:22,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:22,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382087016] [2023-12-02 14:07:22,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382087016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:22,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:22,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:07:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727030599] [2023-12-02 14:07:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:07:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:07:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:22,616 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:07:22,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:22,774 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2023-12-02 14:07:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:07:22,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2023-12-02 14:07:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:22,777 INFO L225 Difference]: With dead ends: 97 [2023-12-02 14:07:22,777 INFO L226 Difference]: Without dead ends: 96 [2023-12-02 14:07:22,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:22,779 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:22,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:07:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-02 14:07:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2023-12-02 14:07:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 14:07:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-12-02 14:07:22,794 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 15 [2023-12-02 14:07:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:22,794 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-12-02 14:07:22,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:07:22,795 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-12-02 14:07:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 14:07:22,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:22,796 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:22,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 14:07:23,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:23,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:23,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1150165444, now seen corresponding path program 1 times [2023-12-02 14:07:23,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840069547] [2023-12-02 14:07:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:23,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:23,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375242602] [2023-12-02 14:07:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:23,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:23,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:23,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:23,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 14:07:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:23,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 14:07:23,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:07:23,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:23,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:23,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840069547] [2023-12-02 14:07:23,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:23,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375242602] [2023-12-02 14:07:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375242602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:23,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:23,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:07:23,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578262974] [2023-12-02 14:07:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:23,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:07:23,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:07:23,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:23,151 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:07:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:23,349 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2023-12-02 14:07:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:07:23,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2023-12-02 14:07:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:23,352 INFO L225 Difference]: With dead ends: 134 [2023-12-02 14:07:23,352 INFO L226 Difference]: Without dead ends: 131 [2023-12-02 14:07:23,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:23,354 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 219 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:23,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 97 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:07:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-02 14:07:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2023-12-02 14:07:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 66 states have (on average 1.606060606060606) internal successors, (106), 89 states have internal predecessors, (106), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 14:07:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 136 transitions. [2023-12-02 14:07:23,372 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 136 transitions. Word has length 19 [2023-12-02 14:07:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:23,372 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 136 transitions. [2023-12-02 14:07:23,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:07:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 136 transitions. [2023-12-02 14:07:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 14:07:23,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:23,374 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:23,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 14:07:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:23,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:23,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1295390451, now seen corresponding path program 1 times [2023-12-02 14:07:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108253933] [2023-12-02 14:07:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:23,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948989402] [2023-12-02 14:07:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:23,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:23,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:23,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 14:07:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:23,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 14:07:23,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:07:23,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:23,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:23,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108253933] [2023-12-02 14:07:23,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948989402] [2023-12-02 14:07:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948989402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:23,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:23,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:07:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856007097] [2023-12-02 14:07:23,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:07:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:23,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:07:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:23,733 INFO L87 Difference]: Start difference. First operand 107 states and 136 transitions. Second operand has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:07:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:23,880 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2023-12-02 14:07:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:07:23,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2023-12-02 14:07:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:23,882 INFO L225 Difference]: With dead ends: 134 [2023-12-02 14:07:23,882 INFO L226 Difference]: Without dead ends: 131 [2023-12-02 14:07:23,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:07:23,884 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 161 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:23,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 106 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:07:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-02 14:07:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2023-12-02 14:07:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 90 states have internal predecessors, (105), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 14:07:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2023-12-02 14:07:23,899 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 20 [2023-12-02 14:07:23,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:23,899 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2023-12-02 14:07:23,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:07:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2023-12-02 14:07:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 14:07:23,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:23,900 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:23,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 14:07:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:24,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:24,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1502398374, now seen corresponding path program 1 times [2023-12-02 14:07:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521060573] [2023-12-02 14:07:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:24,119 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:24,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178095498] [2023-12-02 14:07:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:24,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:24,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:24,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 14:07:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:24,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:07:24,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:07:24,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:07:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 14:07:24,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521060573] [2023-12-02 14:07:24,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178095498] [2023-12-02 14:07:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178095498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:07:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [999283877] [2023-12-02 14:07:24,349 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 14:07:24,349 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:07:24,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:07:24,356 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:07:24,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:07:24,799 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 14:07:24,804 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:07:24,806 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:07:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [999283877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:25,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:07:25,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 17 [2023-12-02 14:07:25,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174546022] [2023-12-02 14:07:25,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:25,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:07:25,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:25,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:07:25,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-02 14:07:25,330 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:07:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:25,694 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2023-12-02 14:07:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:07:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2023-12-02 14:07:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:25,696 INFO L225 Difference]: With dead ends: 116 [2023-12-02 14:07:25,696 INFO L226 Difference]: Without dead ends: 108 [2023-12-02 14:07:25,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-12-02 14:07:25,697 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 211 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:25,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 107 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:07:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-02 14:07:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-02 14:07:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 89 states have internal predecessors, (101), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 14:07:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2023-12-02 14:07:25,716 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 21 [2023-12-02 14:07:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:25,717 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2023-12-02 14:07:25,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 14:07:25,717 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2023-12-02 14:07:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 14:07:25,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:25,718 INFO L195 NwaCegarLoop]: trace histogram [3, 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 14:07:25,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 14:07:25,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:25,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:25,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash -36539540, now seen corresponding path program 1 times [2023-12-02 14:07:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:25,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730082179] [2023-12-02 14:07:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:25,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917921478] [2023-12-02 14:07:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:25,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:25,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:25,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:25,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 14:07:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:25,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 14:07:25,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:07:26,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:07:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:07:26,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730082179] [2023-12-02 14:07:26,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917921478] [2023-12-02 14:07:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917921478] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:07:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [592748265] [2023-12-02 14:07:26,123 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 14:07:26,123 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:07:26,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:07:26,123 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:07:26,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:07:26,579 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-12-02 14:07:26,583 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:07:26,585 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:07:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [592748265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:27,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:07:27,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5] total 19 [2023-12-02 14:07:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640345515] [2023-12-02 14:07:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:27,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 14:07:27,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:27,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 14:07:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:07:27,247 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 14:07:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:27,703 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2023-12-02 14:07:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 14:07:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2023-12-02 14:07:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:27,705 INFO L225 Difference]: With dead ends: 141 [2023-12-02 14:07:27,705 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 14:07:27,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-12-02 14:07:27,707 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 92 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:27,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 77 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:07:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 14:07:27,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-02 14:07:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 85 states have (on average 1.423529411764706) internal successors, (121), 108 states have internal predecessors, (121), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 14:07:27,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-12-02 14:07:27,726 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 29 [2023-12-02 14:07:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:27,727 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-12-02 14:07:27,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-12-02 14:07:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-12-02 14:07:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 14:07:27,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:27,729 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:27,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 14:07:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:27,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:27,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1788982354, now seen corresponding path program 1 times [2023-12-02 14:07:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103549918] [2023-12-02 14:07:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:27,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:27,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032187465] [2023-12-02 14:07:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:27,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:27,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:27,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:27,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 14:07:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:27,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:07:28,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 14:07:28,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:28,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:28,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103549918] [2023-12-02 14:07:28,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:28,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032187465] [2023-12-02 14:07:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032187465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:28,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:07:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975687643] [2023-12-02 14:07:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:28,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:07:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:07:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:07:28,082 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 14:07:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:28,159 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-12-02 14:07:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:07:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 48 [2023-12-02 14:07:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:28,161 INFO L225 Difference]: With dead ends: 132 [2023-12-02 14:07:28,161 INFO L226 Difference]: Without dead ends: 131 [2023-12-02 14:07:28,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 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 14:07:28,162 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 43 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 79 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 14:07:28,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 79 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:07:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-02 14:07:28,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-12-02 14:07:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 85 states have (on average 1.411764705882353) internal successors, (120), 107 states have internal predecessors, (120), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 14:07:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2023-12-02 14:07:28,180 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 48 [2023-12-02 14:07:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:28,181 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2023-12-02 14:07:28,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 14:07:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2023-12-02 14:07:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 14:07:28,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:28,183 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:28,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 14:07:28,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:28,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:28,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash -376121748, now seen corresponding path program 1 times [2023-12-02 14:07:28,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:28,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831794857] [2023-12-02 14:07:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:28,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:28,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:28,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162638049] [2023-12-02 14:07:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:28,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:28,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:28,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:28,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 14:07:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:28,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:07:28,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 14:07:28,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:28,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831794857] [2023-12-02 14:07:28,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162638049] [2023-12-02 14:07:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162638049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:28,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:07:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127919602] [2023-12-02 14:07:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:28,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:07:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:07:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:07:28,520 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 14:07:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:28,613 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2023-12-02 14:07:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:07:28,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2023-12-02 14:07:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:28,615 INFO L225 Difference]: With dead ends: 150 [2023-12-02 14:07:28,615 INFO L226 Difference]: Without dead ends: 149 [2023-12-02 14:07:28,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 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 14:07:28,617 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:28,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 125 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:07:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-02 14:07:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-12-02 14:07:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 109 states have internal predecessors, (122), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 14:07:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2023-12-02 14:07:28,634 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 49 [2023-12-02 14:07:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:28,635 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2023-12-02 14:07:28,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 14:07:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2023-12-02 14:07:28,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 14:07:28,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:28,636 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2023-12-02 14:07:28,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 14:07:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:28,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:28,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash 526726340, now seen corresponding path program 1 times [2023-12-02 14:07:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:28,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820118356] [2023-12-02 14:07:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:28,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:28,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127538226] [2023-12-02 14:07:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:28,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:28,854 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:28,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 14:07:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:28,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:07:28,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 14:07:28,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:28,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820118356] [2023-12-02 14:07:28,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:28,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127538226] [2023-12-02 14:07:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127538226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:28,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:28,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:07:28,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073733392] [2023-12-02 14:07:28,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:28,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:28,967 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 14:07:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:29,026 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2023-12-02 14:07:29,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:07:29,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-12-02 14:07:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:29,028 INFO L225 Difference]: With dead ends: 133 [2023-12-02 14:07:29,028 INFO L226 Difference]: Without dead ends: 132 [2023-12-02 14:07:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 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 14:07:29,029 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 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 14:07:29,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:07:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-12-02 14:07:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-12-02 14:07:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 108 states have internal predecessors, (121), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 14:07:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-12-02 14:07:29,053 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 52 [2023-12-02 14:07:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:29,053 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-12-02 14:07:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 14:07:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-12-02 14:07:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 14:07:29,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:29,055 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:29,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 14:07:29,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:29,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:29,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1396457673, now seen corresponding path program 1 times [2023-12-02 14:07:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781099515] [2023-12-02 14:07:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:29,266 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:29,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716091559] [2023-12-02 14:07:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:29,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:29,268 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:29,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 14:07:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:29,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:07:29,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 14:07:29,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:29,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:29,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781099515] [2023-12-02 14:07:29,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:29,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716091559] [2023-12-02 14:07:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716091559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:07:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725944512] [2023-12-02 14:07:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:29,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:29,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:29,335 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:29,369 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-12-02 14:07:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:07:29,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-12-02 14:07:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:29,371 INFO L225 Difference]: With dead ends: 132 [2023-12-02 14:07:29,371 INFO L226 Difference]: Without dead ends: 131 [2023-12-02 14:07:29,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 14:07:29,372 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:29,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 93 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:07:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-02 14:07:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-12-02 14:07:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 87 states have (on average 1.367816091954023) internal successors, (119), 107 states have internal predecessors, (119), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 14:07:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2023-12-02 14:07:29,390 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 55 [2023-12-02 14:07:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:29,390 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2023-12-02 14:07:29,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2023-12-02 14:07:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 14:07:29,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:29,392 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:29,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 14:07:29,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 14:07:29,597 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:29,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash -859509049, now seen corresponding path program 1 times [2023-12-02 14:07:29,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:29,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912615733] [2023-12-02 14:07:29,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:29,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:29,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764140174] [2023-12-02 14:07:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:29,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:29,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:29,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:29,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 14:07:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:29,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:07:29,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 14:07:29,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:07:30,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912615733] [2023-12-02 14:07:30,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764140174] [2023-12-02 14:07:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764140174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:07:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1507678992] [2023-12-02 14:07:30,080 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 14:07:30,080 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:07:30,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:07:30,080 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:07:30,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:07:34,865 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:07:34,866 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:07:34,867 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:07:37,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1507678992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:37,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:07:37,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 22 [2023-12-02 14:07:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402622355] [2023-12-02 14:07:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:37,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 14:07:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 14:07:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-12-02 14:07:37,492 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 14:07:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:38,124 INFO L93 Difference]: Finished difference Result 189 states and 222 transitions. [2023-12-02 14:07:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:07:38,125 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2023-12-02 14:07:38,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:38,126 INFO L225 Difference]: With dead ends: 189 [2023-12-02 14:07:38,126 INFO L226 Difference]: Without dead ends: 165 [2023-12-02 14:07:38,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-12-02 14:07:38,128 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 158 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:38,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 55 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:07:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-02 14:07:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-12-02 14:07:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 131 states have internal predecessors, (144), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 14:07:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2023-12-02 14:07:38,151 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 56 [2023-12-02 14:07:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:38,151 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2023-12-02 14:07:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-12-02 14:07:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2023-12-02 14:07:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 14:07:38,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:38,153 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:38,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 14:07:38,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:38,354 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:38,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:38,354 INFO L85 PathProgramCache]: Analyzing trace with hash -340514788, now seen corresponding path program 1 times [2023-12-02 14:07:38,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:38,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369846051] [2023-12-02 14:07:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:38,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:38,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250834172] [2023-12-02 14:07:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:38,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:38,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:38,364 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:38,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 14:07:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:38,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:07:38,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:38,429 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 14:07:38,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:38,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369846051] [2023-12-02 14:07:38,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:38,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250834172] [2023-12-02 14:07:38,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250834172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:38,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:38,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:07:38,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877465798] [2023-12-02 14:07:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:38,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:38,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:38,431 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:38,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:38,466 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2023-12-02 14:07:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:07:38,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-12-02 14:07:38,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:38,468 INFO L225 Difference]: With dead ends: 161 [2023-12-02 14:07:38,468 INFO L226 Difference]: Without dead ends: 160 [2023-12-02 14:07:38,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 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 14:07:38,469 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 29 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:38,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 95 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:07:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-12-02 14:07:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-12-02 14:07:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 130 states have internal predecessors, (142), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 14:07:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2023-12-02 14:07:38,493 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 56 [2023-12-02 14:07:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:38,493 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2023-12-02 14:07:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2023-12-02 14:07:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 14:07:38,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:38,495 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 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, 1, 1] [2023-12-02 14:07:38,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 14:07:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:38,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:38,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 436777392, now seen corresponding path program 1 times [2023-12-02 14:07:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:38,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290060267] [2023-12-02 14:07:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:38,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728194457] [2023-12-02 14:07:38,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:38,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:38,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:38,714 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:38,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 14:07:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:38,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 14:07:38,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 14:07:39,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:07:39,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:39,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290060267] [2023-12-02 14:07:39,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:39,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728194457] [2023-12-02 14:07:39,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728194457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:07:39,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [931862813] [2023-12-02 14:07:39,593 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 14:07:39,593 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:07:39,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:07:39,594 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:07:39,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:07:42,682 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 14:07:42,683 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:07:42,684 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:07:46,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5603#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (div |ULTIMATE.start_main_~a~0#1| 2) 4611686018427387903) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 (+ 4611686018427387904 (div |ULTIMATE.start_main_~b~0#1| 2))) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 10) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-12-02 14:07:46,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:07:46,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:07:46,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 14:07:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389389505] [2023-12-02 14:07:46,322 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:07:46,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:07:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:07:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 14:07:46,324 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-02 14:07:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:49,067 INFO L93 Difference]: Finished difference Result 364 states and 438 transitions. [2023-12-02 14:07:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 14:07:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 59 [2023-12-02 14:07:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:49,070 INFO L225 Difference]: With dead ends: 364 [2023-12-02 14:07:49,070 INFO L226 Difference]: Without dead ends: 361 [2023-12-02 14:07:49,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=337, Invalid=1643, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 14:07:49,072 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 472 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:49,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 288 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 14:07:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-12-02 14:07:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 231. [2023-12-02 14:07:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 188 states have internal predecessors, (227), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 14:07:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 303 transitions. [2023-12-02 14:07:49,110 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 303 transitions. Word has length 59 [2023-12-02 14:07:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:49,110 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 303 transitions. [2023-12-02 14:07:49,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-12-02 14:07:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 303 transitions. [2023-12-02 14:07:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:07:49,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:49,112 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:49,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 14:07:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:49,312 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:49,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 862919785, now seen corresponding path program 1 times [2023-12-02 14:07:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329092000] [2023-12-02 14:07:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:49,319 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713864883] [2023-12-02 14:07:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:49,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:49,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:49,321 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:49,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 14:07:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:49,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:07:49,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 14:07:49,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:49,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329092000] [2023-12-02 14:07:49,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:49,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713864883] [2023-12-02 14:07:49,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713864883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:49,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:07:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466112444] [2023-12-02 14:07:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:49,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:49,417 INFO L87 Difference]: Start difference. First operand 231 states and 303 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:49,484 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2023-12-02 14:07:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:07:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2023-12-02 14:07:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:49,487 INFO L225 Difference]: With dead ends: 231 [2023-12-02 14:07:49,487 INFO L226 Difference]: Without dead ends: 229 [2023-12-02 14:07:49,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 14:07:49,488 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:49,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:07:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-12-02 14:07:49,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-12-02 14:07:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 169 states have (on average 1.3076923076923077) internal successors, (221), 186 states have internal predecessors, (221), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 14:07:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 297 transitions. [2023-12-02 14:07:49,530 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 297 transitions. Word has length 65 [2023-12-02 14:07:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:49,530 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 297 transitions. [2023-12-02 14:07:49,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 297 transitions. [2023-12-02 14:07:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 14:07:49,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:49,531 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:07:49,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 14:07:49,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 14:07:49,732 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:49,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash 980709646, now seen corresponding path program 1 times [2023-12-02 14:07:49,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:49,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465236987] [2023-12-02 14:07:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:49,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:49,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608992542] [2023-12-02 14:07:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:49,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:49,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:49,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:49,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 14:07:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:49,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:07:49,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 14:07:49,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:07:49,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465236987] [2023-12-02 14:07:49,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608992542] [2023-12-02 14:07:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608992542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:07:49,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:07:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:07:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283652729] [2023-12-02 14:07:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:07:49,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:07:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:49,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:07:49,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:07:49,834 INFO L87 Difference]: Start difference. First operand 229 states and 297 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:49,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:49,899 INFO L93 Difference]: Finished difference Result 229 states and 297 transitions. [2023-12-02 14:07:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:07:49,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-12-02 14:07:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:49,900 INFO L225 Difference]: With dead ends: 229 [2023-12-02 14:07:49,900 INFO L226 Difference]: Without dead ends: 225 [2023-12-02 14:07:49,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 14:07:49,901 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:49,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 58 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:07:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-02 14:07:49,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-12-02 14:07:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.2754491017964071) internal successors, (213), 182 states have internal predecessors, (213), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 14:07:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 289 transitions. [2023-12-02 14:07:49,933 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 289 transitions. Word has length 66 [2023-12-02 14:07:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:49,933 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 289 transitions. [2023-12-02 14:07:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:07:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 289 transitions. [2023-12-02 14:07:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 14:07:49,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:49,934 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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, 1, 1, 1] [2023-12-02 14:07:49,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 14:07:50,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 14:07:50,137 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:50,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1793604937, now seen corresponding path program 1 times [2023-12-02 14:07:50,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82573407] [2023-12-02 14:07:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:50,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:50,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283489083] [2023-12-02 14:07:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:50,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:50,146 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:50,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 14:07:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:50,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:07:50,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:07:50,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:07:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:07:50,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:50,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82573407] [2023-12-02 14:07:50,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283489083] [2023-12-02 14:07:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283489083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:07:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [158148469] [2023-12-02 14:07:50,319 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 14:07:50,319 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:07:50,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:07:50,319 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:07:50,320 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:07:52,868 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 14:07:52,869 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:07:52,870 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:07:55,194 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8315#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 10))' at error location [2023-12-02 14:07:55,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:07:55,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:07:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 14:07:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150194601] [2023-12-02 14:07:55,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:07:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:07:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:07:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:07:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2023-12-02 14:07:55,196 INFO L87 Difference]: Start difference. First operand 225 states and 289 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-02 14:07:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:07:55,623 INFO L93 Difference]: Finished difference Result 447 states and 564 transitions. [2023-12-02 14:07:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:07:55,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 73 [2023-12-02 14:07:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:07:55,627 INFO L225 Difference]: With dead ends: 447 [2023-12-02 14:07:55,627 INFO L226 Difference]: Without dead ends: 446 [2023-12-02 14:07:55,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:07:55,629 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 250 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:07:55,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 224 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:07:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-12-02 14:07:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 337. [2023-12-02 14:07:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 257 states have (on average 1.2918287937743191) internal successors, (332), 272 states have internal predecessors, (332), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 14:07:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 452 transitions. [2023-12-02 14:07:55,688 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 452 transitions. Word has length 73 [2023-12-02 14:07:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:07:55,688 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 452 transitions. [2023-12-02 14:07:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-02 14:07:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 452 transitions. [2023-12-02 14:07:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 14:07:55,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:07:55,690 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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, 1, 1] [2023-12-02 14:07:55,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-02 14:07:55,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 14:07:55,892 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:07:55,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:07:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash -232821708, now seen corresponding path program 1 times [2023-12-02 14:07:55,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:07:55,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292082547] [2023-12-02 14:07:55,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:55,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:07:55,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:07:55,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789972165] [2023-12-02 14:07:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:07:55,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:07:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:07:55,902 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:07:55,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 14:07:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:07:55,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:07:55,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:07:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:07:55,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:07:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:07:56,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:07:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292082547] [2023-12-02 14:07:56,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:07:56,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789972165] [2023-12-02 14:07:56,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789972165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:07:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1780848208] [2023-12-02 14:07:56,093 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 14:07:56,093 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:07:56,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:07:56,093 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:07:56,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:07:58,491 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 14:07:58,491 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:07:58,492 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:08:00,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9748#(and (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 14:08:00,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:08:00,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:08:00,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 14:08:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377681175] [2023-12-02 14:08:00,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:08:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:08:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:08:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2023-12-02 14:08:00,626 INFO L87 Difference]: Start difference. First operand 337 states and 452 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-02 14:08:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:01,282 INFO L93 Difference]: Finished difference Result 449 states and 561 transitions. [2023-12-02 14:08:01,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 14:08:01,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 74 [2023-12-02 14:08:01,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:01,285 INFO L225 Difference]: With dead ends: 449 [2023-12-02 14:08:01,285 INFO L226 Difference]: Without dead ends: 448 [2023-12-02 14:08:01,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 183 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:08:01,287 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 337 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:01,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 212 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 14:08:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-12-02 14:08:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 339. [2023-12-02 14:08:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 274 states have internal predecessors, (329), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 14:08:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 449 transitions. [2023-12-02 14:08:01,354 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 449 transitions. Word has length 74 [2023-12-02 14:08:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:01,354 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 449 transitions. [2023-12-02 14:08:01,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-12-02 14:08:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 449 transitions. [2023-12-02 14:08:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 14:08:01,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:01,356 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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, 1, 1] [2023-12-02 14:08:01,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 14:08:01,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 14:08:01,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:01,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash -403358900, now seen corresponding path program 1 times [2023-12-02 14:08:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:01,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044936104] [2023-12-02 14:08:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:01,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:01,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721172957] [2023-12-02 14:08:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:01,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:01,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:01,575 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:01,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 14:08:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:01,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:08:01,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:08:01,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:08:01,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:01,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044936104] [2023-12-02 14:08:01,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:01,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721172957] [2023-12-02 14:08:01,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721172957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:01,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:08:01,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:08:01,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507087762] [2023-12-02 14:08:01,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:01,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:08:01,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:01,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:08:01,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:08:01,669 INFO L87 Difference]: Start difference. First operand 339 states and 449 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 14:08:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:01,776 INFO L93 Difference]: Finished difference Result 351 states and 457 transitions. [2023-12-02 14:08:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:08:01,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 76 [2023-12-02 14:08:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:01,778 INFO L225 Difference]: With dead ends: 351 [2023-12-02 14:08:01,778 INFO L226 Difference]: Without dead ends: 350 [2023-12-02 14:08:01,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 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 14:08:01,779 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 21 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:01,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 188 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:08:01,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-02 14:08:01,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 341. [2023-12-02 14:08:01,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 261 states have (on average 1.2681992337164751) internal successors, (331), 276 states have internal predecessors, (331), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 14:08:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 451 transitions. [2023-12-02 14:08:01,822 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 451 transitions. Word has length 76 [2023-12-02 14:08:01,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:01,822 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 451 transitions. [2023-12-02 14:08:01,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 14:08:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 451 transitions. [2023-12-02 14:08:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 14:08:01,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:01,823 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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, 1, 1, 1] [2023-12-02 14:08:01,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 14:08:02,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 14:08:02,024 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:02,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 380776110, now seen corresponding path program 1 times [2023-12-02 14:08:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:02,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997337469] [2023-12-02 14:08:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:02,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:02,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296181440] [2023-12-02 14:08:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:02,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:02,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:02,034 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:02,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 14:08:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:02,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:08:02,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-02 14:08:02,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:08:02,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997337469] [2023-12-02 14:08:02,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296181440] [2023-12-02 14:08:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296181440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:02,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:08:02,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:08:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410762983] [2023-12-02 14:08:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:02,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:08:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:02,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:08:02,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:08:02,174 INFO L87 Difference]: Start difference. First operand 341 states and 451 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:08:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:02,292 INFO L93 Difference]: Finished difference Result 341 states and 451 transitions. [2023-12-02 14:08:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:08:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2023-12-02 14:08:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:02,295 INFO L225 Difference]: With dead ends: 341 [2023-12-02 14:08:02,295 INFO L226 Difference]: Without dead ends: 340 [2023-12-02 14:08:02,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 14:08:02,296 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 69 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:02,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:08:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-02 14:08:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-12-02 14:08:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 261 states have (on average 1.260536398467433) internal successors, (329), 275 states have internal predecessors, (329), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-02 14:08:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 449 transitions. [2023-12-02 14:08:02,364 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 449 transitions. Word has length 77 [2023-12-02 14:08:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:02,364 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 449 transitions. [2023-12-02 14:08:02,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 14:08:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 449 transitions. [2023-12-02 14:08:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 14:08:02,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:02,365 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 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, 1, 1, 1, 1, 1] [2023-12-02 14:08:02,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 14:08:02,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:02,566 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:02,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash 853625520, now seen corresponding path program 1 times [2023-12-02 14:08:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:02,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113829308] [2023-12-02 14:08:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:02,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029431525] [2023-12-02 14:08:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:02,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:02,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:02,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:02,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 14:08:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:02,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:08:02,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:08:02,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:08:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-02 14:08:02,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113829308] [2023-12-02 14:08:02,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029431525] [2023-12-02 14:08:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029431525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:08:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353730061] [2023-12-02 14:08:02,810 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:08:02,810 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:08:02,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:08:02,811 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:08:02,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:08:05,314 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 14:08:05,315 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:08:05,316 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:08:08,456 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13380#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 9223372036854775808 |ULTIMATE.start_main_~a~0#1|) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~b~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 14:08:08,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:08:08,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:08:08,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 14:08:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705648030] [2023-12-02 14:08:08,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:08:08,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:08:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:08:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 14:08:08,458 INFO L87 Difference]: Start difference. First operand 340 states and 449 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-02 14:08:09,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:09,784 INFO L93 Difference]: Finished difference Result 648 states and 825 transitions. [2023-12-02 14:08:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:08:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 79 [2023-12-02 14:08:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:09,789 INFO L225 Difference]: With dead ends: 648 [2023-12-02 14:08:09,789 INFO L226 Difference]: Without dead ends: 647 [2023-12-02 14:08:09,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 193 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=263, Invalid=1219, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 14:08:09,791 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 284 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:09,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 261 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 14:08:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-02 14:08:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 475. [2023-12-02 14:08:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 373 states have (on average 1.2707774798927614) internal successors, (474), 387 states have internal predecessors, (474), 83 states have call successors, (83), 4 states have call predecessors, (83), 4 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 14:08:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 640 transitions. [2023-12-02 14:08:09,897 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 640 transitions. Word has length 79 [2023-12-02 14:08:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:09,897 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 640 transitions. [2023-12-02 14:08:09,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-12-02 14:08:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 640 transitions. [2023-12-02 14:08:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 14:08:09,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:09,899 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 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, 1, 1] [2023-12-02 14:08:09,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 14:08:10,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:10,099 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:10,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:10,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1444800003, now seen corresponding path program 1 times [2023-12-02 14:08:10,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298184935] [2023-12-02 14:08:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:10,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:10,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:10,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839250599] [2023-12-02 14:08:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:10,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:10,111 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:10,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 14:08:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:10,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 14:08:10,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-02 14:08:10,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:08:10,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298184935] [2023-12-02 14:08:10,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839250599] [2023-12-02 14:08:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839250599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:08:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1172568720] [2023-12-02 14:08:10,770 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:08:10,770 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:08:10,770 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:08:10,770 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:08:10,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:08:23,053 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:08:23,054 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:08:23,055 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:08:30,893 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15101#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387901)) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 14:08:30,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:08:30,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:08:30,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 14:08:30,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12398839] [2023-12-02 14:08:30,894 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:08:30,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:08:30,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:08:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 14:08:30,896 INFO L87 Difference]: Start difference. First operand 475 states and 640 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 14:08:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:31,845 INFO L93 Difference]: Finished difference Result 787 states and 1037 transitions. [2023-12-02 14:08:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 14:08:31,845 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 86 [2023-12-02 14:08:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:31,850 INFO L225 Difference]: With dead ends: 787 [2023-12-02 14:08:31,850 INFO L226 Difference]: Without dead ends: 783 [2023-12-02 14:08:31,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 126 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=387, Invalid=2693, Unknown=0, NotChecked=0, Total=3080 [2023-12-02 14:08:31,852 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 324 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:31,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 209 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 14:08:31,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-12-02 14:08:31,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 700. [2023-12-02 14:08:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 557 states have (on average 1.2549371633752244) internal successors, (699), 571 states have internal predecessors, (699), 124 states have call successors, (124), 4 states have call predecessors, (124), 4 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-02 14:08:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 947 transitions. [2023-12-02 14:08:31,985 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 947 transitions. Word has length 86 [2023-12-02 14:08:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:31,985 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 947 transitions. [2023-12-02 14:08:31,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 14:08:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 947 transitions. [2023-12-02 14:08:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 14:08:31,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:31,987 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 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, 1] [2023-12-02 14:08:31,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-02 14:08:32,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:32,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:32,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1839127188, now seen corresponding path program 1 times [2023-12-02 14:08:32,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:32,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418462756] [2023-12-02 14:08:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:32,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:32,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:32,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375686140] [2023-12-02 14:08:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:32,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:32,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:32,198 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:32,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 14:08:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:32,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 14:08:32,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-12-02 14:08:32,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:08:32,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:32,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418462756] [2023-12-02 14:08:32,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:32,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375686140] [2023-12-02 14:08:32,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375686140] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:08:32,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732343878] [2023-12-02 14:08:32,814 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:08:32,814 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:08:32,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:08:32,814 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:08:32,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:08:44,414 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:08:44,415 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:08:44,416 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:08:53,814 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17291#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:08:53,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:08:53,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:08:53,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 14:08:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417960219] [2023-12-02 14:08:53,815 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:08:53,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:08:53,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:08:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=2048, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 14:08:53,817 INFO L87 Difference]: Start difference. First operand 700 states and 947 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 14:08:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:54,413 INFO L93 Difference]: Finished difference Result 796 states and 1053 transitions. [2023-12-02 14:08:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 14:08:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 87 [2023-12-02 14:08:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:54,419 INFO L225 Difference]: With dead ends: 796 [2023-12-02 14:08:54,419 INFO L226 Difference]: Without dead ends: 791 [2023-12-02 14:08:54,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 129 SyntacticMatches, 13 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 14:08:54,421 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 165 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:54,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 181 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:08:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2023-12-02 14:08:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 765. [2023-12-02 14:08:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 610 states have (on average 1.2442622950819673) internal successors, (759), 624 states have internal predecessors, (759), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-02 14:08:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1031 transitions. [2023-12-02 14:08:54,526 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1031 transitions. Word has length 87 [2023-12-02 14:08:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:54,526 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1031 transitions. [2023-12-02 14:08:54,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-12-02 14:08:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1031 transitions. [2023-12-02 14:08:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 14:08:54,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:54,527 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:08:54,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 14:08:54,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 14:08:54,728 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:54,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1178368037, now seen corresponding path program 1 times [2023-12-02 14:08:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:54,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729941972] [2023-12-02 14:08:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:54,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670388652] [2023-12-02 14:08:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:54,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:54,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:54,741 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:54,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 14:08:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:54,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:08:54,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-02 14:08:54,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:08:54,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:54,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729941972] [2023-12-02 14:08:54,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670388652] [2023-12-02 14:08:54,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670388652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:08:54,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:08:54,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:08:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021772448] [2023-12-02 14:08:54,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:08:54,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:08:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:08:54,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:08:54,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:08:54,892 INFO L87 Difference]: Start difference. First operand 765 states and 1031 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 14:08:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:08:55,333 INFO L93 Difference]: Finished difference Result 1107 states and 1483 transitions. [2023-12-02 14:08:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 14:08:55,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 88 [2023-12-02 14:08:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:08:55,338 INFO L225 Difference]: With dead ends: 1107 [2023-12-02 14:08:55,338 INFO L226 Difference]: Without dead ends: 1104 [2023-12-02 14:08:55,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 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 14:08:55,339 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 59 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:08:55,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 357 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 14:08:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2023-12-02 14:08:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 846. [2023-12-02 14:08:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 679 states have (on average 1.2444771723122239) internal successors, (845), 693 states have internal predecessors, (845), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-02 14:08:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1141 transitions. [2023-12-02 14:08:55,462 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1141 transitions. Word has length 88 [2023-12-02 14:08:55,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:08:55,462 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1141 transitions. [2023-12-02 14:08:55,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-02 14:08:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1141 transitions. [2023-12-02 14:08:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 14:08:55,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:08:55,463 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 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, 1, 1, 1, 1, 1] [2023-12-02 14:08:55,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 14:08:55,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 14:08:55,664 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:08:55,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:08:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2125296458, now seen corresponding path program 1 times [2023-12-02 14:08:55,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:08:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769065558] [2023-12-02 14:08:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:08:55,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:08:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993831641] [2023-12-02 14:08:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:08:55,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:08:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:08:55,677 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:08:55,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 14:08:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:08:55,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 14:08:55,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:08:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-02 14:08:56,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:08:56,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:08:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769065558] [2023-12-02 14:08:56,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:08:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993831641] [2023-12-02 14:08:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993831641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:08:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1589468414] [2023-12-02 14:08:56,335 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:08:56,335 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:08:56,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:08:56,335 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:08:56,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:09:07,692 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:09:07,693 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:09:07,694 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:09:14,777 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22254#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 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 14:09:14,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:09:14,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:09:14,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 14:09:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634853132] [2023-12-02 14:09:14,777 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:09:14,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:09:14,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:09:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=2233, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 14:09:14,780 INFO L87 Difference]: Start difference. First operand 846 states and 1141 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 14:09:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:15,414 INFO L93 Difference]: Finished difference Result 864 states and 1147 transitions. [2023-12-02 14:09:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 14:09:15,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 89 [2023-12-02 14:09:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:15,419 INFO L225 Difference]: With dead ends: 864 [2023-12-02 14:09:15,419 INFO L226 Difference]: Without dead ends: 863 [2023-12-02 14:09:15,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 133 SyntacticMatches, 13 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=382, Invalid=3040, Unknown=0, NotChecked=0, Total=3422 [2023-12-02 14:09:15,420 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 203 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:15,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 217 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:09:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-12-02 14:09:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 846. [2023-12-02 14:09:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 679 states have (on average 1.2430044182621502) internal successors, (844), 693 states have internal predecessors, (844), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-02 14:09:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1140 transitions. [2023-12-02 14:09:15,576 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1140 transitions. Word has length 89 [2023-12-02 14:09:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:15,577 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1140 transitions. [2023-12-02 14:09:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 14:09:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1140 transitions. [2023-12-02 14:09:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 14:09:15,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:15,578 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:09:15,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 14:09:15,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 14:09:15,779 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:09:15,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1645453556, now seen corresponding path program 2 times [2023-12-02 14:09:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029523943] [2023-12-02 14:09:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:15,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:09:15,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269129541] [2023-12-02 14:09:15,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:09:15,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:09:15,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:09:15,787 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:09:15,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 14:09:15,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:09:15,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:09:15,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 14:09:15,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:09:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 14:09:16,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:09:16,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029523943] [2023-12-02 14:09:16,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:09:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269129541] [2023-12-02 14:09:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269129541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:09:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853414212] [2023-12-02 14:09:16,621 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 14:09:16,621 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:09:16,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:09:16,621 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:09:16,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:09:18,929 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 14:09:18,930 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:09:18,931 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:09:22,663 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24708#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 0 (+ 4611686018427387904 (div |ULTIMATE.start_main_~b~0#1| 2))) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~q~0#1| 0) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 10) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~a~0#1|) 2))))' at error location [2023-12-02 14:09:22,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:09:22,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:09:22,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 14:09:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748976684] [2023-12-02 14:09:22,663 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:09:22,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 14:09:22,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 14:09:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 14:09:22,664 INFO L87 Difference]: Start difference. First operand 846 states and 1140 transitions. Second operand has 10 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 14:09:24,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:24,744 INFO L93 Difference]: Finished difference Result 871 states and 1162 transitions. [2023-12-02 14:09:24,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:09:24,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 89 [2023-12-02 14:09:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:24,749 INFO L225 Difference]: With dead ends: 871 [2023-12-02 14:09:24,749 INFO L226 Difference]: Without dead ends: 868 [2023-12-02 14:09:24,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 140 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=352, Invalid=1454, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 14:09:24,751 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 220 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:24,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 219 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 14:09:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-12-02 14:09:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 846. [2023-12-02 14:09:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 679 states have (on average 1.2326951399116348) internal successors, (837), 693 states have internal predecessors, (837), 148 states have call successors, (148), 4 states have call predecessors, (148), 4 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2023-12-02 14:09:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1133 transitions. [2023-12-02 14:09:24,889 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1133 transitions. Word has length 89 [2023-12-02 14:09:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:24,890 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1133 transitions. [2023-12-02 14:09:24,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.142857142857143) internal successors, (43), 9 states have internal predecessors, (43), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 14:09:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1133 transitions. [2023-12-02 14:09:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 14:09:24,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:24,892 INFO L195 NwaCegarLoop]: trace histogram [12, 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, 1, 1, 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 14:09:24,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 14:09:25,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 14:09:25,093 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:09:25,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1800146249, now seen corresponding path program 1 times [2023-12-02 14:09:25,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:25,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452970231] [2023-12-02 14:09:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:25,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:09:25,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965326286] [2023-12-02 14:09:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:25,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:09:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:09:25,102 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:09:25,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 14:09:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:25,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:09:25,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:09:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 14:09:25,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:09:25,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452970231] [2023-12-02 14:09:25,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:09:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965326286] [2023-12-02 14:09:25,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965326286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:09:25,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:09:25,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:09:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681216459] [2023-12-02 14:09:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:09:25,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:09:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:09:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:09:25,216 INFO L87 Difference]: Start difference. First operand 846 states and 1133 transitions. Second operand has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 14:09:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:25,383 INFO L93 Difference]: Finished difference Result 846 states and 1133 transitions. [2023-12-02 14:09:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:09:25,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-12-02 14:09:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:25,387 INFO L225 Difference]: With dead ends: 846 [2023-12-02 14:09:25,387 INFO L226 Difference]: Without dead ends: 842 [2023-12-02 14:09:25,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 14:09:25,388 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:25,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:09:25,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-02 14:09:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 777. [2023-12-02 14:09:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 624 states have (on average 1.1939102564102564) internal successors, (745), 636 states have internal predecessors, (745), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-02 14:09:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1017 transitions. [2023-12-02 14:09:25,513 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1017 transitions. Word has length 101 [2023-12-02 14:09:25,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:25,513 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1017 transitions. [2023-12-02 14:09:25,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.0) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 14:09:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1017 transitions. [2023-12-02 14:09:25,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 14:09:25,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:25,514 INFO L195 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 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 14:09:25,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 14:09:25,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 14:09:25,715 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:09:25,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2056584516, now seen corresponding path program 1 times [2023-12-02 14:09:25,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:25,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41726161] [2023-12-02 14:09:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:25,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:25,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:09:25,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005439670] [2023-12-02 14:09:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:25,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:09:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:09:25,727 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:09:25,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 14:09:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:25,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:09:25,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:09:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 10 proven. 35 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-02 14:09:25,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:09:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-12-02 14:09:26,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41726161] [2023-12-02 14:09:26,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:09:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005439670] [2023-12-02 14:09:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005439670] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:09:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [981930904] [2023-12-02 14:09:26,088 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:09:26,088 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:09:26,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:09:26,088 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:09:26,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:09:38,211 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:09:38,212 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:09:38,213 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:09:45,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29825#(and (<= 1 |#StackHeapBarrier|) (= (* |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|))) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387905) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-12-02 14:09:45,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:09:45,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:09:45,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 14:09:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100296456] [2023-12-02 14:09:45,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:09:45,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:09:45,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:09:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1849, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 14:09:45,496 INFO L87 Difference]: Start difference. First operand 777 states and 1017 transitions. Second operand has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 9 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2023-12-02 14:09:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:46,541 INFO L93 Difference]: Finished difference Result 1152 states and 1498 transitions. [2023-12-02 14:09:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 14:09:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 9 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 110 [2023-12-02 14:09:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:46,544 INFO L225 Difference]: With dead ends: 1152 [2023-12-02 14:09:46,545 INFO L226 Difference]: Without dead ends: 690 [2023-12-02 14:09:46,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 269 SyntacticMatches, 18 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2252 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=603, Invalid=2937, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 14:09:46,547 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 437 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:46,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 342 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 14:09:46,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-12-02 14:09:46,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 651. [2023-12-02 14:09:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 521 states have (on average 1.1919385796545106) internal successors, (621), 533 states have internal predecessors, (621), 113 states have call successors, (113), 4 states have call predecessors, (113), 4 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-02 14:09:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 847 transitions. [2023-12-02 14:09:46,646 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 847 transitions. Word has length 110 [2023-12-02 14:09:46,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:46,646 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 847 transitions. [2023-12-02 14:09:46,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 9 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2023-12-02 14:09:46,646 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 847 transitions. [2023-12-02 14:09:46,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-02 14:09:46,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:46,647 INFO L195 NwaCegarLoop]: trace histogram [14, 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, 1, 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 14:09:46,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-02 14:09:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 14:09:46,847 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:09:46,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash 931185, now seen corresponding path program 1 times [2023-12-02 14:09:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961387707] [2023-12-02 14:09:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:46,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:09:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960887597] [2023-12-02 14:09:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:46,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:09:46,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:09:46,856 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:09:46,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 14:09:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:09:46,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:09:46,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:09:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-12-02 14:09:46,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:09:46,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:46,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961387707] [2023-12-02 14:09:46,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:09:46,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960887597] [2023-12-02 14:09:46,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960887597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:09:46,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:09:46,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:09:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123155834] [2023-12-02 14:09:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:09:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:09:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:09:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:09:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:09:46,934 INFO L87 Difference]: Start difference. First operand 651 states and 847 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 14:09:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:09:47,071 INFO L93 Difference]: Finished difference Result 656 states and 847 transitions. [2023-12-02 14:09:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:09:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-02 14:09:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:09:47,075 INFO L225 Difference]: With dead ends: 656 [2023-12-02 14:09:47,075 INFO L226 Difference]: Without dead ends: 655 [2023-12-02 14:09:47,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 14:09:47,075 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:09:47,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 98 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:09:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-12-02 14:09:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 650. [2023-12-02 14:09:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 521 states have (on average 1.182341650671785) internal successors, (616), 532 states have internal predecessors, (616), 113 states have call successors, (113), 4 states have call predecessors, (113), 4 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-02 14:09:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 842 transitions. [2023-12-02 14:09:47,172 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 842 transitions. Word has length 113 [2023-12-02 14:09:47,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:09:47,172 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 842 transitions. [2023-12-02 14:09:47,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-02 14:09:47,173 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 842 transitions. [2023-12-02 14:09:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-02 14:09:47,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:09:47,174 INFO L195 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1] [2023-12-02 14:09:47,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-02 14:09:47,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 14:09:47,374 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:09:47,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:09:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1966836799, now seen corresponding path program 2 times [2023-12-02 14:09:47,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:09:47,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518543959] [2023-12-02 14:09:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:09:47,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:09:47,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:09:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436552890] [2023-12-02 14:09:47,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:09:47,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:09:47,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:09:47,384 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:09:47,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 14:09:47,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:09:47,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:09:47,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 14:09:47,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:09:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-02 14:09:47,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:09:52,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:09:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518543959] [2023-12-02 14:09:52,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:09:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436552890] [2023-12-02 14:09:52,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436552890] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:09:52,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1149847775] [2023-12-02 14:09:52,145 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:09:52,145 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:09:52,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:09:52,146 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:09:52,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:10:03,191 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:10:03,192 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:10:03,193 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:10:13,311 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34461#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387901)) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~r~0#1|)))' at error location [2023-12-02 14:10:13,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:10:13,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:10:13,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 14:10:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769794613] [2023-12-02 14:10:13,312 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:10:13,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 14:10:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 14:10:13,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=2174, Unknown=1, NotChecked=0, Total=2450 [2023-12-02 14:10:13,314 INFO L87 Difference]: Start difference. First operand 650 states and 842 transitions. Second operand has 10 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 14:10:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:14,387 INFO L93 Difference]: Finished difference Result 658 states and 844 transitions. [2023-12-02 14:10:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:10:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 116 [2023-12-02 14:10:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:14,391 INFO L225 Difference]: With dead ends: 658 [2023-12-02 14:10:14,391 INFO L226 Difference]: Without dead ends: 653 [2023-12-02 14:10:14,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 180 SyntacticMatches, 18 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=366, Invalid=2939, Unknown=1, NotChecked=0, Total=3306 [2023-12-02 14:10:14,392 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 246 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:14,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 137 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 14:10:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-12-02 14:10:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 534. [2023-12-02 14:10:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 431 states have (on average 1.1322505800464038) internal successors, (488), 438 states have internal predecessors, (488), 91 states have call successors, (91), 4 states have call predecessors, (91), 4 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-12-02 14:10:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 670 transitions. [2023-12-02 14:10:14,489 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 670 transitions. Word has length 116 [2023-12-02 14:10:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:14,490 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 670 transitions. [2023-12-02 14:10:14,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 14:10:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 670 transitions. [2023-12-02 14:10:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 14:10:14,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:14,491 INFO L195 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:10:14,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 14:10:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 14:10:14,692 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:10:14,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash 842398680, now seen corresponding path program 2 times [2023-12-02 14:10:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:14,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150964258] [2023-12-02 14:10:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:14,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:10:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006039322] [2023-12-02 14:10:14,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:10:14,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:10:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:10:14,700 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:10:14,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 14:10:15,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:10:15,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:10:15,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 14:10:15,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:10:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-12-02 14:10:15,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:10:17,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150964258] [2023-12-02 14:10:17,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:10:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006039322] [2023-12-02 14:10:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006039322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:10:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [319805393] [2023-12-02 14:10:17,018 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:10:17,018 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:10:17,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:10:17,018 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:10:17,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:10:28,135 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:10:28,136 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:10:28,137 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:10:41,265 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36394#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:10:41,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:10:41,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:10:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 14:10:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046738426] [2023-12-02 14:10:41,266 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:10:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 14:10:41,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:10:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 14:10:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2045, Unknown=1, NotChecked=0, Total=2352 [2023-12-02 14:10:41,267 INFO L87 Difference]: Start difference. First operand 534 states and 670 transitions. Second operand has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 14:10:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:10:42,452 INFO L93 Difference]: Finished difference Result 675 states and 849 transitions. [2023-12-02 14:10:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 14:10:42,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2023-12-02 14:10:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:10:42,456 INFO L225 Difference]: With dead ends: 675 [2023-12-02 14:10:42,456 INFO L226 Difference]: Without dead ends: 674 [2023-12-02 14:10:42,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 184 SyntacticMatches, 18 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=327, Invalid=2222, Unknown=1, NotChecked=0, Total=2550 [2023-12-02 14:10:42,457 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 97 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:10:42,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 111 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 14:10:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-02 14:10:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 540. [2023-12-02 14:10:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 436 states have (on average 1.128440366972477) internal successors, (492), 443 states have internal predecessors, (492), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 14:10:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 676 transitions. [2023-12-02 14:10:42,553 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 676 transitions. Word has length 117 [2023-12-02 14:10:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:10:42,553 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 676 transitions. [2023-12-02 14:10:42,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.333333333333333) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 14:10:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 676 transitions. [2023-12-02 14:10:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-02 14:10:42,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:10:42,554 INFO L195 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1] [2023-12-02 14:10:42,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 14:10:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:10:42,755 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:10:42,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:10:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2091281658, now seen corresponding path program 2 times [2023-12-02 14:10:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:10:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32865613] [2023-12-02 14:10:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:10:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:10:42,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:10:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097896870] [2023-12-02 14:10:42,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:10:42,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:10:42,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:10:42,764 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:10:42,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 14:10:42,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:10:42,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:10:42,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 14:10:42,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:10:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-02 14:10:43,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:10:43,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:10:43,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32865613] [2023-12-02 14:10:43,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:10:43,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097896870] [2023-12-02 14:10:43,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097896870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:10:43,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [581447966] [2023-12-02 14:10:43,174 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:10:43,174 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:10:43,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:10:43,174 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:10:43,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:10:55,573 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:10:55,574 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:10:55,575 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:11:03,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38309#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= 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 14:11:03,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:11:03,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:11:03,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 14:11:03,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63633672] [2023-12-02 14:11:03,404 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:11:03,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 14:11:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 14:11:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1908, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 14:11:03,406 INFO L87 Difference]: Start difference. First operand 540 states and 676 transitions. Second operand has 9 states, 6 states have (on average 7.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 14:11:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:03,794 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2023-12-02 14:11:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 14:11:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 7.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 119 [2023-12-02 14:11:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:03,797 INFO L225 Difference]: With dead ends: 548 [2023-12-02 14:11:03,797 INFO L226 Difference]: Without dead ends: 547 [2023-12-02 14:11:03,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 18 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=299, Invalid=2457, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 14:11:03,799 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 122 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:03,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 158 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:11:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-02 14:11:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 542. [2023-12-02 14:11:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 438 states have (on average 1.1255707762557077) internal successors, (493), 445 states have internal predecessors, (493), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-02 14:11:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 677 transitions. [2023-12-02 14:11:03,896 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 677 transitions. Word has length 119 [2023-12-02 14:11:03,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:03,896 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 677 transitions. [2023-12-02 14:11:03,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 7.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 14:11:03,896 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 677 transitions. [2023-12-02 14:11:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 14:11:03,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:03,897 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:03,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 14:11:04,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:11:04,098 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:11:04,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1588844055, now seen corresponding path program 3 times [2023-12-02 14:11:04,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:04,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557431895] [2023-12-02 14:11:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:04,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:11:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261046623] [2023-12-02 14:11:04,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:11:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:11:04,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:11:04,110 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:11:04,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 14:11:04,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:11:04,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:11:04,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:11:04,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:11:04,227 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-02 14:11:04,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:11:04,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:04,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557431895] [2023-12-02 14:11:04,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:11:04,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261046623] [2023-12-02 14:11:04,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261046623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:11:04,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:11:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 14:11:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910478150] [2023-12-02 14:11:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:11:04,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:11:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:04,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:11:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:11:04,229 INFO L87 Difference]: Start difference. First operand 542 states and 677 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-02 14:11:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:04,446 INFO L93 Difference]: Finished difference Result 738 states and 927 transitions. [2023-12-02 14:11:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:11:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 124 [2023-12-02 14:11:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:04,449 INFO L225 Difference]: With dead ends: 738 [2023-12-02 14:11:04,449 INFO L226 Difference]: Without dead ends: 412 [2023-12-02 14:11:04,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 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 14:11:04,451 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 30 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:04,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 117 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:11:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-12-02 14:11:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 381. [2023-12-02 14:11:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 303 states have (on average 1.1353135313531353) internal successors, (344), 310 states have internal predecessors, (344), 66 states have call successors, (66), 4 states have call predecessors, (66), 4 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-02 14:11:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 476 transitions. [2023-12-02 14:11:04,551 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 476 transitions. Word has length 124 [2023-12-02 14:11:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:04,551 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 476 transitions. [2023-12-02 14:11:04,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-02 14:11:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 476 transitions. [2023-12-02 14:11:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 14:11:04,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:04,553 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:04,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 14:11:04,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 14:11:04,753 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:11:04,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1857193807, now seen corresponding path program 4 times [2023-12-02 14:11:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:04,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526090538] [2023-12-02 14:11:04,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:04,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:04,761 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:11:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359817467] [2023-12-02 14:11:04,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 14:11:04,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:11:04,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:11:04,762 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:11:04,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 14:11:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:04,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 14:11:04,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:11:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-02 14:11:05,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:11:05,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526090538] [2023-12-02 14:11:05,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:11:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359817467] [2023-12-02 14:11:05,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359817467] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:11:05,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [570808893] [2023-12-02 14:11:05,485 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:11:05,486 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:11:05,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:11:05,486 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:11:05,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:11:17,777 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:11:17,778 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:11:17,779 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:11:28,821 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41894#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:11:28,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:11:28,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:11:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-12-02 14:11:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976119574] [2023-12-02 14:11:28,822 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:11:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 14:11:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:28,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 14:11:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=2233, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 14:11:28,824 INFO L87 Difference]: Start difference. First operand 381 states and 476 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 8 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-02 14:11:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:29,344 INFO L93 Difference]: Finished difference Result 397 states and 491 transitions. [2023-12-02 14:11:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:11:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 8 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 124 [2023-12-02 14:11:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:29,346 INFO L225 Difference]: With dead ends: 397 [2023-12-02 14:11:29,346 INFO L226 Difference]: Without dead ends: 396 [2023-12-02 14:11:29,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 194 SyntacticMatches, 20 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=334, Invalid=2422, Unknown=0, NotChecked=0, Total=2756 [2023-12-02 14:11:29,348 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 102 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:29,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 226 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:11:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-12-02 14:11:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2023-12-02 14:11:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 312 states have (on average 1.1314102564102564) internal successors, (353), 319 states have internal predecessors, (353), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 14:11:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 487 transitions. [2023-12-02 14:11:29,456 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 487 transitions. Word has length 124 [2023-12-02 14:11:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:29,456 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 487 transitions. [2023-12-02 14:11:29,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 8 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-12-02 14:11:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 487 transitions. [2023-12-02 14:11:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 14:11:29,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:29,457 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:29,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 14:11:29,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-02 14:11:29,658 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:11:29,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1738433226, now seen corresponding path program 2 times [2023-12-02 14:11:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:29,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8914677] [2023-12-02 14:11:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:29,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:11:29,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418730005] [2023-12-02 14:11:29,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:11:29,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:11:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:11:29,667 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:11:29,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 14:11:29,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 14:11:29,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:11:29,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 14:11:29,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:11:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 22 proven. 57 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-02 14:11:30,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:11:30,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:30,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8914677] [2023-12-02 14:11:30,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:11:30,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418730005] [2023-12-02 14:11:30,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418730005] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:11:30,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [855632199] [2023-12-02 14:11:30,326 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:11:30,326 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:11:30,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:11:30,326 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:11:30,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:11:42,123 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:11:42,125 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:11:42,125 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:11:51,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43418#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= (+ 9223372036854775809 |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) 0) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807))' at error location [2023-12-02 14:11:51,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:11:51,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:11:51,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 14:11:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364167785] [2023-12-02 14:11:51,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:11:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:11:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:11:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:11:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2270, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 14:11:51,690 INFO L87 Difference]: Start difference. First operand 391 states and 487 transitions. Second operand has 11 states, 8 states have (on average 8.0) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 14:11:52,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:11:52,454 INFO L93 Difference]: Finished difference Result 397 states and 492 transitions. [2023-12-02 14:11:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 14:11:52,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.0) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) Word has length 125 [2023-12-02 14:11:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:11:52,457 INFO L225 Difference]: With dead ends: 397 [2023-12-02 14:11:52,458 INFO L226 Difference]: Without dead ends: 356 [2023-12-02 14:11:52,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 220 SyntacticMatches, 21 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=377, Invalid=3283, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 14:11:52,459 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 166 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:11:52,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 99 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 14:11:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-02 14:11:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 348. [2023-12-02 14:11:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 277 states have (on average 1.1299638989169676) internal successors, (313), 282 states have internal predecessors, (313), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-02 14:11:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 435 transitions. [2023-12-02 14:11:52,547 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 435 transitions. Word has length 125 [2023-12-02 14:11:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:11:52,548 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 435 transitions. [2023-12-02 14:11:52,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.0) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (15), 3 states have call predecessors, (15), 6 states have call successors, (15) [2023-12-02 14:11:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 435 transitions. [2023-12-02 14:11:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-02 14:11:52,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:11:52,549 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:11:52,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 14:11:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 14:11:52,750 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:11:52,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:11:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash 908410919, now seen corresponding path program 1 times [2023-12-02 14:11:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:11:52,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919511654] [2023-12-02 14:11:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:52,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:11:52,759 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:11:52,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468516382] [2023-12-02 14:11:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:11:52,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:11:52,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:11:52,761 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:11:52,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 14:11:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:11:52,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:11:52,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:11:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-02 14:11:53,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:11:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-02 14:11:53,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:11:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919511654] [2023-12-02 14:11:53,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:11:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468516382] [2023-12-02 14:11:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468516382] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:11:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708732180] [2023-12-02 14:11:53,246 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:11:53,246 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:11:53,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:11:53,247 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:11:53,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:12:05,368 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:12:05,369 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:12:05,370 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:12:14,575 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45156#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:12:14,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:12:14,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:12:14,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-02 14:12:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146337655] [2023-12-02 14:12:14,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:12:14,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 14:12:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 14:12:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1502, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 14:12:14,577 INFO L87 Difference]: Start difference. First operand 348 states and 435 transitions. Second operand has 7 states, 5 states have (on average 15.4) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 14:12:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:14,809 INFO L93 Difference]: Finished difference Result 354 states and 435 transitions. [2023-12-02 14:12:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 14:12:14,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 15.4) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 126 [2023-12-02 14:12:14,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:14,812 INFO L225 Difference]: With dead ends: 354 [2023-12-02 14:12:14,812 INFO L226 Difference]: Without dead ends: 351 [2023-12-02 14:12:14,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 316 SyntacticMatches, 19 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 14:12:14,813 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 88 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:14,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 99 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:12:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-02 14:12:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 348. [2023-12-02 14:12:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 277 states have (on average 1.0974729241877257) internal successors, (304), 282 states have internal predecessors, (304), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-02 14:12:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 426 transitions. [2023-12-02 14:12:14,895 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 426 transitions. Word has length 126 [2023-12-02 14:12:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:14,895 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 426 transitions. [2023-12-02 14:12:14,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 15.4) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-02 14:12:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 426 transitions. [2023-12-02 14:12:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 14:12:14,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:14,896 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:14,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 14:12:15,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 14:12:15,096 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:12:15,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1583562973, now seen corresponding path program 1 times [2023-12-02 14:12:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:15,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387153556] [2023-12-02 14:12:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:15,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:12:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768039456] [2023-12-02 14:12:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:12:15,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:12:15,105 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:12:15,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 14:12:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:12:15,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 14:12:15,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:12:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-02 14:12:15,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:12:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-02 14:12:15,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387153556] [2023-12-02 14:12:15,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:12:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768039456] [2023-12-02 14:12:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768039456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:12:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1528299441] [2023-12-02 14:12:15,757 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:12:15,757 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:12:15,757 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:12:15,757 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:12:15,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:12:28,081 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:12:28,082 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:12:28,083 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:12:36,211 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '46920#(and (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-12-02 14:12:36,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:12:36,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:12:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-02 14:12:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781360651] [2023-12-02 14:12:36,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:12:36,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 14:12:36,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:12:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 14:12:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=2170, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 14:12:36,214 INFO L87 Difference]: Start difference. First operand 348 states and 426 transitions. Second operand has 16 states, 15 states have (on average 10.533333333333333) internal successors, (158), 16 states have internal predecessors, (158), 14 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) [2023-12-02 14:12:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:12:37,883 INFO L93 Difference]: Finished difference Result 465 states and 568 transitions. [2023-12-02 14:12:37,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 14:12:37,883 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.533333333333333) internal successors, (158), 16 states have internal predecessors, (158), 14 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) Word has length 141 [2023-12-02 14:12:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:12:37,886 INFO L225 Difference]: With dead ends: 465 [2023-12-02 14:12:37,886 INFO L226 Difference]: Without dead ends: 464 [2023-12-02 14:12:37,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 348 SyntacticMatches, 23 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3317 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=918, Invalid=4632, Unknown=0, NotChecked=0, Total=5550 [2023-12-02 14:12:37,887 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1140 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:12:37,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 356 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 14:12:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-02 14:12:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 348. [2023-12-02 14:12:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 277 states have (on average 1.0866425992779782) internal successors, (301), 282 states have internal predecessors, (301), 61 states have call successors, (61), 4 states have call predecessors, (61), 4 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-02 14:12:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 423 transitions. [2023-12-02 14:12:37,963 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 423 transitions. Word has length 141 [2023-12-02 14:12:37,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:12:37,963 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 423 transitions. [2023-12-02 14:12:37,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.533333333333333) internal successors, (158), 16 states have internal predecessors, (158), 14 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) [2023-12-02 14:12:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 423 transitions. [2023-12-02 14:12:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-02 14:12:37,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:12:37,964 INFO L195 NwaCegarLoop]: trace histogram [19, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:12:37,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 14:12:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:12:38,165 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:12:38,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:12:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash 211656843, now seen corresponding path program 5 times [2023-12-02 14:12:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:12:38,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301194125] [2023-12-02 14:12:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:12:38,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:12:38,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:12:38,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992200707] [2023-12-02 14:12:38,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:12:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:12:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:12:38,174 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:12:38,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 14:12:38,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 14:12:38,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:12:38,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 14:12:38,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:12:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 45 proven. 68 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-12-02 14:12:40,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:12:42,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:12:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301194125] [2023-12-02 14:12:42,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:12:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992200707] [2023-12-02 14:12:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992200707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:12:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [89928082] [2023-12-02 14:12:42,037 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:12:42,037 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:12:42,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:12:42,037 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:12:42,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:12:54,265 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:12:54,266 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:12:54,267 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:13:35,499 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48538#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:13:35,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:13:35,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:13:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-02 14:13:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209033482] [2023-12-02 14:13:35,500 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:13:35,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 14:13:35,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:13:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 14:13:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3080, Unknown=3, NotChecked=0, Total=3422 [2023-12-02 14:13:35,502 INFO L87 Difference]: Start difference. First operand 348 states and 423 transitions. Second operand has 17 states, 13 states have (on average 4.923076923076923) internal successors, (64), 15 states have internal predecessors, (64), 7 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-02 14:13:37,557 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 14:13:40,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:13:48,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:13:52,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:13:59,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:00,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:03,065 WARN L539 Checker$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 14:14:05,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:07,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:09,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:11,480 WARN L539 Checker$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 14:14:14,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:16,161 WARN L539 Checker$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 14:14:18,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 14:14:20,274 WARN L539 Checker$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 14:14:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:14:20,445 INFO L93 Difference]: Finished difference Result 629 states and 775 transitions. [2023-12-02 14:14:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 14:14:20,445 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.923076923076923) internal successors, (64), 15 states have internal predecessors, (64), 7 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 154 [2023-12-02 14:14:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:14:20,449 INFO L225 Difference]: With dead ends: 629 [2023-12-02 14:14:20,449 INFO L226 Difference]: Without dead ends: 618 [2023-12-02 14:14:20,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 241 SyntacticMatches, 25 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2893 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=563, Invalid=4981, Unknown=6, NotChecked=0, Total=5550 [2023-12-02 14:14:20,451 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 549 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 105 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:14:20,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 269 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 896 Invalid, 18 Unknown, 0 Unchecked, 40.6s Time] [2023-12-02 14:14:20,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-02 14:14:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 472. [2023-12-02 14:14:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 379 states have (on average 1.1029023746701847) internal successors, (418), 384 states have internal predecessors, (418), 83 states have call successors, (83), 4 states have call predecessors, (83), 4 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-12-02 14:14:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 584 transitions. [2023-12-02 14:14:20,590 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 584 transitions. Word has length 154 [2023-12-02 14:14:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:14:20,590 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 584 transitions. [2023-12-02 14:14:20,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.923076923076923) internal successors, (64), 15 states have internal predecessors, (64), 7 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2023-12-02 14:14:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 584 transitions. [2023-12-02 14:14:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-02 14:14:20,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:14:20,591 INFO L195 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 14:14:20,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 14:14:20,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:14:20,792 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:14:20,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:14:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1042307560, now seen corresponding path program 2 times [2023-12-02 14:14:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:14:20,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808165824] [2023-12-02 14:14:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:14:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:14:20,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:14:20,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550729494] [2023-12-02 14:14:20,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:14:20,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:14:20,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:14:20,801 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:14:20,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 14:14:20,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 14:14:20,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:14:20,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 14:14:20,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:14:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-12-02 14:14:20,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:14:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-12-02 14:14:21,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:14:21,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808165824] [2023-12-02 14:14:21,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:14:21,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550729494] [2023-12-02 14:14:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550729494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:14:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1517253406] [2023-12-02 14:14:21,122 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-12-02 14:14:21,123 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:14:21,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:14:21,123 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:14:21,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:14:23,477 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 14:14:23,478 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:14:23,479 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:14:26,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50955#(and (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-12-02 14:14:26,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:14:26,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:14:26,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 14:14:26,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026523375] [2023-12-02 14:14:26,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:14:26,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 14:14:26,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:14:26,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 14:14:26,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=879, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 14:14:26,425 INFO L87 Difference]: Start difference. First operand 472 states and 584 transitions. Second operand has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 10 states have internal predecessors, (96), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 14:14:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:14:26,692 INFO L93 Difference]: Finished difference Result 473 states and 584 transitions. [2023-12-02 14:14:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 14:14:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 10 states have internal predecessors, (96), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 164 [2023-12-02 14:14:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:14:26,695 INFO L225 Difference]: With dead ends: 473 [2023-12-02 14:14:26,695 INFO L226 Difference]: Without dead ends: 472 [2023-12-02 14:14:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 444 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 14:14:26,696 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 161 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:14:26,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 210 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:14:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-12-02 14:14:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 451. [2023-12-02 14:14:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 362 states have (on average 1.1049723756906078) internal successors, (400), 367 states have internal predecessors, (400), 79 states have call successors, (79), 4 states have call predecessors, (79), 4 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-02 14:14:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 558 transitions. [2023-12-02 14:14:26,872 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 558 transitions. Word has length 164 [2023-12-02 14:14:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:14:26,872 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 558 transitions. [2023-12-02 14:14:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 10 states have internal predecessors, (96), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-02 14:14:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 558 transitions. [2023-12-02 14:14:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 14:14:26,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:14:26,874 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 14:14:26,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 14:14:27,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:14:27,075 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:14:27,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:14:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 622501037, now seen corresponding path program 1 times [2023-12-02 14:14:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:14:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120628969] [2023-12-02 14:14:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:14:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:14:27,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:14:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178906857] [2023-12-02 14:14:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:14:27,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:14:27,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:14:27,085 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:14:27,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 14:14:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:14:27,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:14:27,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:14:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 22 proven. 157 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-02 14:14:27,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:14:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 22 proven. 157 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-02 14:14:27,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:14:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120628969] [2023-12-02 14:14:27,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:14:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178906857] [2023-12-02 14:14:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178906857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:14:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [128975496] [2023-12-02 14:14:27,486 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:14:27,486 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:14:27,486 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:14:27,486 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:14:27,486 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:14:38,916 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:14:38,917 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:14:38,918 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:14:49,035 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '53195#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387904)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 4611686018427387904 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-12-02 14:14:49,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:14:49,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:14:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2023-12-02 14:14:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019034327] [2023-12-02 14:14:49,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:14:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:14:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:14:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:14:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1911, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 14:14:49,038 INFO L87 Difference]: Start difference. First operand 451 states and 558 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 8 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-02 14:14:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:14:50,003 INFO L93 Difference]: Finished difference Result 811 states and 994 transitions. [2023-12-02 14:14:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 14:14:50,004 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 8 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) Word has length 176 [2023-12-02 14:14:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:14:50,006 INFO L225 Difference]: With dead ends: 811 [2023-12-02 14:14:50,007 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 14:14:50,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 451 SyntacticMatches, 33 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=321, Invalid=2649, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 14:14:50,008 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 146 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:14:50,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 629 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 14:14:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 14:14:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 510. [2023-12-02 14:14:50,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 411 states have (on average 1.099756690997567) internal successors, (452), 416 states have internal predecessors, (452), 89 states have call successors, (89), 4 states have call predecessors, (89), 4 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2023-12-02 14:14:50,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 630 transitions. [2023-12-02 14:14:50,140 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 630 transitions. Word has length 176 [2023-12-02 14:14:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:14:50,140 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 630 transitions. [2023-12-02 14:14:50,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 8 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 8 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-02 14:14:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 630 transitions. [2023-12-02 14:14:50,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 14:14:50,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:14:50,142 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-12-02 14:14:50,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 14:14:50,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 14:14:50,343 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:14:50,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:14:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1551418397, now seen corresponding path program 1 times [2023-12-02 14:14:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:14:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778524566] [2023-12-02 14:14:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:14:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:14:50,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:14:50,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400042228] [2023-12-02 14:14:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:14:50,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:14:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:14:50,353 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:14:50,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 14:14:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:14:50,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:14:50,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:14:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-02 14:14:50,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:14:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-12-02 14:14:50,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:14:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778524566] [2023-12-02 14:14:50,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:14:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400042228] [2023-12-02 14:14:50,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400042228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:14:50,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593405864] [2023-12-02 14:14:50,960 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:14:50,960 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:14:50,961 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:14:50,961 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:14:50,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:15:02,297 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:15:02,298 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:15:02,299 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:15:09,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55947#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 1 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~b~0#1|) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)))' at error location [2023-12-02 14:15:09,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:15:09,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:15:09,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-12-02 14:15:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373580591] [2023-12-02 14:15:09,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:15:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 14:15:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:15:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 14:15:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2343, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 14:15:09,897 INFO L87 Difference]: Start difference. First operand 510 states and 630 transitions. Second operand has 16 states, 15 states have (on average 13.466666666666667) internal successors, (202), 16 states have internal predecessors, (202), 15 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 15 states have call predecessors, (47), 15 states have call successors, (47) [2023-12-02 14:15:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:15:12,214 INFO L93 Difference]: Finished difference Result 1405 states and 1728 transitions. [2023-12-02 14:15:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 14:15:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 13.466666666666667) internal successors, (202), 16 states have internal predecessors, (202), 15 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 15 states have call predecessors, (47), 15 states have call successors, (47) Word has length 176 [2023-12-02 14:15:12,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:15:12,220 INFO L225 Difference]: With dead ends: 1405 [2023-12-02 14:15:12,220 INFO L226 Difference]: Without dead ends: 1392 [2023-12-02 14:15:12,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 447 SyntacticMatches, 29 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3256 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=602, Invalid=3954, Unknown=0, NotChecked=0, Total=4556 [2023-12-02 14:15:12,222 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 921 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:15:12,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 378 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 14:15:12,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2023-12-02 14:15:12,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1054. [2023-12-02 14:15:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 857 states have (on average 1.0956826137689615) internal successors, (939), 862 states have internal predecessors, (939), 187 states have call successors, (187), 4 states have call predecessors, (187), 4 states have return successors, (187), 187 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-02 14:15:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1313 transitions. [2023-12-02 14:15:12,509 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1313 transitions. Word has length 176 [2023-12-02 14:15:12,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:15:12,509 INFO L495 AbstractCegarLoop]: Abstraction has 1054 states and 1313 transitions. [2023-12-02 14:15:12,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 13.466666666666667) internal successors, (202), 16 states have internal predecessors, (202), 15 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 15 states have call predecessors, (47), 15 states have call successors, (47) [2023-12-02 14:15:12,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1313 transitions. [2023-12-02 14:15:12,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-02 14:15:12,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:15:12,510 INFO L195 NwaCegarLoop]: trace histogram [26, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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 14:15:12,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 14:15:12,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 14:15:12,711 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:15:12,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:15:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 144494569, now seen corresponding path program 2 times [2023-12-02 14:15:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:15:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126010021] [2023-12-02 14:15:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:15:12,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:15:12,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:15:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151084674] [2023-12-02 14:15:12,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:15:12,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:15:12,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:15:12,721 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:15:12,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 14:15:12,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 14:15:12,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:15:12,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:15:12,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:15:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-12-02 14:15:12,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:15:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-12-02 14:15:12,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:15:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126010021] [2023-12-02 14:15:12,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:15:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151084674] [2023-12-02 14:15:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151084674] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:15:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1851069691] [2023-12-02 14:15:12,939 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:15:12,939 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:15:12,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:15:12,939 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:15:12,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:15:24,610 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:15:24,611 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:15:24,612 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:15:34,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60273#(and (<= 1 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| 4611686018427387904)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 4611686018427387904 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-12-02 14:15:34,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:15:34,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:15:34,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-12-02 14:15:34,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111066378] [2023-12-02 14:15:34,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:15:34,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:15:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:15:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:15:34,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1473, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 14:15:34,999 INFO L87 Difference]: Start difference. First operand 1054 states and 1313 transitions. Second operand has 6 states, 4 states have (on average 13.5) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-02 14:15:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:15:35,417 INFO L93 Difference]: Finished difference Result 1057 states and 1316 transitions. [2023-12-02 14:15:35,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 14:15:35,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 13.5) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 206 [2023-12-02 14:15:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:15:35,423 INFO L225 Difference]: With dead ends: 1057 [2023-12-02 14:15:35,424 INFO L226 Difference]: Without dead ends: 1056 [2023-12-02 14:15:35,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 544 SyntacticMatches, 33 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=255, Invalid=1551, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 14:15:35,425 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 47 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:15:35,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 60 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 14:15:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2023-12-02 14:15:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1053. [2023-12-02 14:15:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 857 states have (on average 1.0805134189031504) internal successors, (926), 861 states have internal predecessors, (926), 187 states have call successors, (187), 4 states have call predecessors, (187), 4 states have return successors, (187), 187 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-02 14:15:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1300 transitions. [2023-12-02 14:15:35,740 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1300 transitions. Word has length 206 [2023-12-02 14:15:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:15:35,741 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1300 transitions. [2023-12-02 14:15:35,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 13.5) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-02 14:15:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1300 transitions. [2023-12-02 14:15:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-12-02 14:15:35,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:15:35,742 INFO L195 NwaCegarLoop]: trace histogram [27, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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 14:15:35,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-02 14:15:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:15:35,943 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:15:35,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:15:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash -874867233, now seen corresponding path program 1 times [2023-12-02 14:15:35,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:15:35,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991015813] [2023-12-02 14:15:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:15:35,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:15:35,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:15:35,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975089661] [2023-12-02 14:15:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:15:35,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:15:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:15:35,953 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:15:35,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 14:15:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:15:36,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:15:36,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:15:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 152 proven. 20 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-12-02 14:15:36,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:15:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 152 proven. 20 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2023-12-02 14:15:36,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:15:36,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991015813] [2023-12-02 14:15:36,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:15:36,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975089661] [2023-12-02 14:15:36,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975089661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:15:36,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1264335503] [2023-12-02 14:15:36,172 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:15:36,172 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:15:36,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:15:36,172 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:15:36,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:15:47,774 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:15:47,775 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:15:47,776 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:15:55,502 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64195#(and (<= 4611686018427387904 |ULTIMATE.start_main_~a~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 10))' at error location [2023-12-02 14:15:55,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:15:55,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:15:55,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-02 14:15:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656306477] [2023-12-02 14:15:55,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:15:55,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 14:15:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:15:55,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 14:15:55,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 14:15:55,505 INFO L87 Difference]: Start difference. First operand 1053 states and 1300 transitions. Second operand has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 5 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-12-02 14:15:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:15:56,108 INFO L93 Difference]: Finished difference Result 1119 states and 1370 transitions. [2023-12-02 14:15:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:15:56,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 5 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 211 [2023-12-02 14:15:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:15:56,115 INFO L225 Difference]: With dead ends: 1119 [2023-12-02 14:15:56,115 INFO L226 Difference]: Without dead ends: 1118 [2023-12-02 14:15:56,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 557 SyntacticMatches, 34 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2023-12-02 14:15:56,116 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 103 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:15:56,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 154 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:15:56,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-12-02 14:15:56,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1070. [2023-12-02 14:15:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 872 states have (on average 1.069954128440367) internal successors, (933), 876 states have internal predecessors, (933), 189 states have call successors, (189), 4 states have call predecessors, (189), 4 states have return successors, (189), 189 states have call predecessors, (189), 189 states have call successors, (189) [2023-12-02 14:15:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1311 transitions. [2023-12-02 14:15:56,437 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1311 transitions. Word has length 211 [2023-12-02 14:15:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:15:56,437 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1311 transitions. [2023-12-02 14:15:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 6 states have internal predecessors, (106), 5 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2023-12-02 14:15:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1311 transitions. [2023-12-02 14:15:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-02 14:15:56,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:15:56,439 INFO L195 NwaCegarLoop]: trace histogram [27, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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 14:15:56,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 14:15:56,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:15:56,639 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:15:56,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:15:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1366360939, now seen corresponding path program 2 times [2023-12-02 14:15:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:15:56,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702248752] [2023-12-02 14:15:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:15:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:15:56,651 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:15:56,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812056787] [2023-12-02 14:15:56,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:15:56,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:15:56,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:15:56,653 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:15:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-02 14:15:56,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 14:15:56,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:15:56,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 14:15:56,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:15:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 30 proven. 191 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2023-12-02 14:15:57,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:15:58,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:15:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702248752] [2023-12-02 14:15:58,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:15:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812056787] [2023-12-02 14:15:58,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812056787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:15:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742905452] [2023-12-02 14:15:58,063 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:15:58,063 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:15:58,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:15:58,064 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:15:58,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:16:10,668 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:16:10,669 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:16:10,670 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:16:27,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67620#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:16:27,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:16:27,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:16:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 14:16:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599369773] [2023-12-02 14:16:27,342 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:16:27,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 14:16:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:16:27,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 14:16:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2266, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 14:16:27,343 INFO L87 Difference]: Start difference. First operand 1070 states and 1311 transitions. Second operand has 12 states, 9 states have (on average 8.222222222222221) internal successors, (74), 11 states have internal predecessors, (74), 5 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 14:16:29,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:16:29,786 INFO L93 Difference]: Finished difference Result 1074 states and 1313 transitions. [2023-12-02 14:16:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 14:16:29,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.222222222222221) internal successors, (74), 11 states have internal predecessors, (74), 5 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 216 [2023-12-02 14:16:29,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:16:29,792 INFO L225 Difference]: With dead ends: 1074 [2023-12-02 14:16:29,792 INFO L226 Difference]: Without dead ends: 1072 [2023-12-02 14:16:29,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 356 SyntacticMatches, 34 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2848 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=403, Invalid=3257, Unknown=0, NotChecked=0, Total=3660 [2023-12-02 14:16:29,794 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 153 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:16:29,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 285 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 615 Invalid, 1 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 14:16:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2023-12-02 14:16:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1051. [2023-12-02 14:16:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 857 states have (on average 1.0501750291715286) internal successors, (900), 859 states have internal predecessors, (900), 187 states have call successors, (187), 4 states have call predecessors, (187), 4 states have return successors, (187), 187 states have call predecessors, (187), 187 states have call successors, (187) [2023-12-02 14:16:30,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1274 transitions. [2023-12-02 14:16:30,137 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1274 transitions. Word has length 216 [2023-12-02 14:16:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:16:30,138 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1274 transitions. [2023-12-02 14:16:30,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.222222222222221) internal successors, (74), 11 states have internal predecessors, (74), 5 states have call successors, (16), 1 states have call predecessors, (16), 3 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 14:16:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1274 transitions. [2023-12-02 14:16:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-02 14:16:30,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:16:30,141 INFO L195 NwaCegarLoop]: trace histogram [28, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:16:30,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-12-02 14:16:30,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:16:30,341 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:16:30,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:16:30,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1506591948, now seen corresponding path program 6 times [2023-12-02 14:16:30,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:16:30,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948126470] [2023-12-02 14:16:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:16:30,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:16:30,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:16:30,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358624484] [2023-12-02 14:16:30,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 14:16:30,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:16:30,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:16:30,354 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:16:30,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-02 14:16:30,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 14:16:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:16:30,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 14:16:30,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:16:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 1 proven. 283 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-02 14:16:31,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:16:31,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:16:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948126470] [2023-12-02 14:16:31,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:16:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358624484] [2023-12-02 14:16:31,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358624484] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:16:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702102958] [2023-12-02 14:16:31,688 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:16:31,688 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:16:31,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:16:31,688 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:16:31,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:16:44,133 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:16:44,135 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:16:44,136 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:16:57,978 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '71035#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:16:57,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:16:57,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:16:57,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-02 14:16:57,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275481777] [2023-12-02 14:16:57,978 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:16:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 14:16:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:16:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 14:16:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2507, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 14:16:57,981 INFO L87 Difference]: Start difference. First operand 1051 states and 1274 transitions. Second operand has 15 states, 13 states have (on average 10.076923076923077) internal successors, (131), 14 states have internal predecessors, (131), 12 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 12 states have call predecessors, (31), 12 states have call successors, (31) [2023-12-02 14:16:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:16:58,822 INFO L93 Difference]: Finished difference Result 1089 states and 1317 transitions. [2023-12-02 14:16:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 14:16:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 10.076923076923077) internal successors, (131), 14 states have internal predecessors, (131), 12 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 12 states have call predecessors, (31), 12 states have call successors, (31) Word has length 221 [2023-12-02 14:16:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:16:58,828 INFO L225 Difference]: With dead ends: 1089 [2023-12-02 14:16:58,828 INFO L226 Difference]: Without dead ends: 1002 [2023-12-02 14:16:58,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 368 SyntacticMatches, 37 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=392, Invalid=2800, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 14:16:58,829 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:16:58,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 227 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 14:16:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-12-02 14:16:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 1002. [2023-12-02 14:16:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 817 states have (on average 1.0514075887392902) internal successors, (859), 819 states have internal predecessors, (859), 178 states have call successors, (178), 4 states have call predecessors, (178), 4 states have return successors, (178), 178 states have call predecessors, (178), 178 states have call successors, (178) [2023-12-02 14:16:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1215 transitions. [2023-12-02 14:16:59,145 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1215 transitions. Word has length 221 [2023-12-02 14:16:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:16:59,145 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1215 transitions. [2023-12-02 14:16:59,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 10.076923076923077) internal successors, (131), 14 states have internal predecessors, (131), 12 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 12 states have call predecessors, (31), 12 states have call successors, (31) [2023-12-02 14:16:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1215 transitions. [2023-12-02 14:16:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-02 14:16:59,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:16:59,148 INFO L195 NwaCegarLoop]: trace histogram [32, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:16:59,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-12-02 14:16:59,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:16:59,348 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:16:59,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:16:59,349 INFO L85 PathProgramCache]: Analyzing trace with hash -684910216, now seen corresponding path program 7 times [2023-12-02 14:16:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:16:59,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895194895] [2023-12-02 14:16:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:16:59,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:16:59,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:16:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268857040] [2023-12-02 14:16:59,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 14:16:59,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:16:59,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:16:59,361 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:16:59,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-02 14:16:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:16:59,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 14:16:59,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:16:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 338 proven. 275 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-02 14:16:59,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:17:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 118 proven. 271 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2023-12-02 14:17:00,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:17:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895194895] [2023-12-02 14:17:00,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:17:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268857040] [2023-12-02 14:17:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268857040] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:17:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1194456926] [2023-12-02 14:17:00,711 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:17:00,712 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:17:00,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:17:00,712 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:17:00,712 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:17:13,204 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:17:13,205 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:17:13,206 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:17:28,622 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '75193#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:17:28,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:17:28,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:17:28,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2023-12-02 14:17:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143998879] [2023-12-02 14:17:28,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:17:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 14:17:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:17:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 14:17:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=3179, Unknown=0, NotChecked=0, Total=3540 [2023-12-02 14:17:28,626 INFO L87 Difference]: Start difference. First operand 1002 states and 1215 transitions. Second operand has 24 states, 23 states have (on average 11.695652173913043) internal successors, (269), 24 states have internal predecessors, (269), 21 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (68), 20 states have call predecessors, (68), 21 states have call successors, (68) [2023-12-02 14:17:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:17:32,347 INFO L93 Difference]: Finished difference Result 1382 states and 1671 transitions. [2023-12-02 14:17:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-02 14:17:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 11.695652173913043) internal successors, (269), 24 states have internal predecessors, (269), 21 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (68), 20 states have call predecessors, (68), 21 states have call successors, (68) Word has length 251 [2023-12-02 14:17:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:17:32,352 INFO L225 Difference]: With dead ends: 1382 [2023-12-02 14:17:32,353 INFO L226 Difference]: Without dead ends: 888 [2023-12-02 14:17:32,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 650 SyntacticMatches, 43 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6910 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1170, Invalid=9960, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 14:17:32,355 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1265 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 2126 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:17:32,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 984 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2126 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 14:17:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-02 14:17:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 820. [2023-12-02 14:17:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 666 states have (on average 1.0465465465465464) internal successors, (697), 668 states have internal predecessors, (697), 147 states have call successors, (147), 4 states have call predecessors, (147), 4 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2023-12-02 14:17:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 991 transitions. [2023-12-02 14:17:32,671 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 991 transitions. Word has length 251 [2023-12-02 14:17:32,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:17:32,672 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 991 transitions. [2023-12-02 14:17:32,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 11.695652173913043) internal successors, (269), 24 states have internal predecessors, (269), 21 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (68), 20 states have call predecessors, (68), 21 states have call successors, (68) [2023-12-02 14:17:32,672 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 991 transitions. [2023-12-02 14:17:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-02 14:17:32,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:17:32,676 INFO L195 NwaCegarLoop]: trace histogram [38, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 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 14:17:32,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-02 14:17:32,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:17:32,877 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:17:32,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:17:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 46649105, now seen corresponding path program 2 times [2023-12-02 14:17:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:17:32,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759717368] [2023-12-02 14:17:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:17:32,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:17:32,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:17:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702875323] [2023-12-02 14:17:32,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:17:32,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:17:32,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:17:32,898 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:17:32,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-02 14:17:32,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-02 14:17:32,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:17:32,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:17:32,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:17:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 299 proven. 150 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2023-12-02 14:17:33,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:17:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 299 proven. 150 refuted. 0 times theorem prover too weak. 1622 trivial. 0 not checked. [2023-12-02 14:17:33,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:17:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759717368] [2023-12-02 14:17:33,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:17:33,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702875323] [2023-12-02 14:17:33,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702875323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:17:33,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572536472] [2023-12-02 14:17:33,558 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:17:33,558 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:17:33,558 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:17:33,559 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:17:33,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:17:46,798 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:17:46,799 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:17:46,800 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:17:57,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '79800#(and (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-12-02 14:17:57,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:17:57,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 14:17:57,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-02 14:17:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795127418] [2023-12-02 14:17:57,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 14:17:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 14:17:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:17:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 14:17:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2093, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 14:17:57,566 INFO L87 Difference]: Start difference. First operand 820 states and 991 transitions. Second operand has 14 states, 13 states have (on average 12.153846153846153) internal successors, (158), 14 states have internal predecessors, (158), 10 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2023-12-02 14:17:58,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:17:58,181 INFO L93 Difference]: Finished difference Result 822 states and 991 transitions. [2023-12-02 14:17:58,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 14:17:58,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.153846153846153) internal successors, (158), 14 states have internal predecessors, (158), 10 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) Word has length 291 [2023-12-02 14:17:58,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:17:58,185 INFO L225 Difference]: With dead ends: 822 [2023-12-02 14:17:58,185 INFO L226 Difference]: Without dead ends: 821 [2023-12-02 14:17:58,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 775 SyntacticMatches, 48 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4315 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=526, Invalid=3256, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 14:17:58,186 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 164 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:17:58,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 392 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 14:17:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-12-02 14:17:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 777. [2023-12-02 14:17:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 632 states have (on average 1.0427215189873418) internal successors, (659), 633 states have internal predecessors, (659), 139 states have call successors, (139), 4 states have call predecessors, (139), 4 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2023-12-02 14:17:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 937 transitions. [2023-12-02 14:17:58,427 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 937 transitions. Word has length 291 [2023-12-02 14:17:58,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:17:58,428 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 937 transitions. [2023-12-02 14:17:58,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.153846153846153) internal successors, (158), 14 states have internal predecessors, (158), 10 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2023-12-02 14:17:58,428 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 937 transitions. [2023-12-02 14:17:58,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-02 14:17:58,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:17:58,430 INFO L195 NwaCegarLoop]: trace histogram [40, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:17:58,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-12-02 14:17:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:17:58,631 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:17:58,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:17:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash -721664712, now seen corresponding path program 8 times [2023-12-02 14:17:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:17:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327020059] [2023-12-02 14:17:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:17:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:17:58,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:17:58,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49492667] [2023-12-02 14:17:58,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:17:58,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:17:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:17:58,646 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:17:58,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-02 14:17:58,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-02 14:17:58,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:17:58,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-02 14:17:58,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:18:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2229 backedges. 171 proven. 404 refuted. 0 times theorem prover too weak. 1654 trivial. 0 not checked. [2023-12-02 14:18:04,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:18:07,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:18:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327020059] [2023-12-02 14:18:07,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:18:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49492667] [2023-12-02 14:18:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49492667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:18:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1080266836] [2023-12-02 14:18:07,716 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:18:07,716 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:18:07,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:18:07,717 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:18:07,717 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:18:18,770 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:18:18,771 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:18:18,772 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:18:54,345 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82846#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 14:18:54,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:18:54,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:18:54,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-12-02 14:18:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831760198] [2023-12-02 14:18:54,346 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:18:54,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 14:18:54,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:18:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 14:18:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=3559, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 14:18:54,347 INFO L87 Difference]: Start difference. First operand 777 states and 937 transitions. Second operand has 21 states, 17 states have (on average 5.588235294117647) internal successors, (95), 19 states have internal predecessors, (95), 9 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2023-12-02 14:19:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:19:01,156 INFO L93 Difference]: Finished difference Result 826 states and 996 transitions. [2023-12-02 14:19:01,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 14:19:01,157 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 5.588235294117647) internal successors, (95), 19 states have internal predecessors, (95), 9 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) Word has length 311 [2023-12-02 14:19:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:19:01,159 INFO L225 Difference]: With dead ends: 826 [2023-12-02 14:19:01,159 INFO L226 Difference]: Without dead ends: 529 [2023-12-02 14:19:01,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 524 SyntacticMatches, 52 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=502, Invalid=5350, Unknown=0, NotChecked=0, Total=5852 [2023-12-02 14:19:01,160 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 143 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:19:01,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 495 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 14:19:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-02 14:19:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 361. [2023-12-02 14:19:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 291 states have (on average 1.0206185567010309) internal successors, (297), 291 states have internal predecessors, (297), 65 states have call successors, (65), 4 states have call predecessors, (65), 4 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-02 14:19:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 427 transitions. [2023-12-02 14:19:01,274 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 427 transitions. Word has length 311 [2023-12-02 14:19:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:19:01,275 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 427 transitions. [2023-12-02 14:19:01,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 5.588235294117647) internal successors, (95), 19 states have internal predecessors, (95), 9 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (21), 8 states have call predecessors, (21), 9 states have call successors, (21) [2023-12-02 14:19:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 427 transitions. [2023-12-02 14:19:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-02 14:19:01,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:19:01,278 INFO L195 NwaCegarLoop]: trace histogram [42, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2023-12-02 14:19:01,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-12-02 14:19:01,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-02 14:19:01,478 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-12-02 14:19:01,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:19:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1270876169, now seen corresponding path program 2 times [2023-12-02 14:19:01,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:19:01,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670658846] [2023-12-02 14:19:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:19:01,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:19:01,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 14:19:01,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344070538] [2023-12-02 14:19:01,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:19:01,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:19:01,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:19:01,494 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:19:01,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-02 14:19:01,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-02 14:19:01,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:19:01,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 14:19:01,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:19:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2579 backedges. 57 proven. 522 refuted. 0 times theorem prover too weak. 2000 trivial. 0 not checked. [2023-12-02 14:19:06,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:19:06,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:19:06,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670658846] [2023-12-02 14:19:06,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 14:19:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344070538] [2023-12-02 14:19:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344070538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:19:06,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291375761] [2023-12-02 14:19:06,698 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 14:19:06,698 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:19:06,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:19:06,698 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:19:06,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:19:18,060 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 14:19:18,062 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-12-02 14:19:18,063 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 14:19:29,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '85429#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 10) (<= 1 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= |ULTIMATE.start_main_~x~0#1| 10) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~b~0#1|) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)))' at error location [2023-12-02 14:19:29,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 14:19:29,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 14:19:29,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-12-02 14:19:29,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218279250] [2023-12-02 14:19:29,661 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 14:19:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 14:19:29,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:19:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 14:19:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 14:19:29,662 INFO L87 Difference]: Start difference. First operand 361 states and 427 transitions. Second operand has 11 states, 8 states have (on average 8.5) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-02 14:19:32,619 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 14:19:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:19:32,854 INFO L93 Difference]: Finished difference Result 371 states and 439 transitions. [2023-12-02 14:19:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 14:19:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.5) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 326 [2023-12-02 14:19:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:19:32,856 INFO L225 Difference]: With dead ends: 371 [2023-12-02 14:19:32,856 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 14:19:32,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 566 SyntacticMatches, 54 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3257 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=345, Invalid=2847, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 14:19:32,857 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:19:32,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 80 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 14:19:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 14:19:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 14:19:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:19:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 14:19:32,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 326 [2023-12-02 14:19:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:19:32,858 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 14:19:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.5) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2023-12-02 14:19:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 14:19:32,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 14:19:32,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 30 remaining) [2023-12-02 14:19:32,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-12-02 14:19:32,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-12-02 14:19:32,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 30 remaining) [2023-12-02 14:19:32,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-12-02 14:19:33,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d898aa4-77c2-4336-b711-e2caf1cc4625/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-02 14:19:33,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 14:19:39,333 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 480 DAG size of output: 421 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 14:19:49,123 WARN L293 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 403 DAG size of output: 389 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 14:19:55,003 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 478 DAG size of output: 432 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-02 14:20:27,238 WARN L293 SmtUtils]: Spent 32.23s on a formula simplification. DAG size of input: 360 DAG size of output: 455 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)