./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound5.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_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/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_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/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_0010c158-b06f-4bf9-8830-ab0252de16ad/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 befa5004268d4c15cae2c05402ac6cc0f86cef85e498084909e66f7e8cc4b8f3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:00:29,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:00:29,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:00:29,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:00:29,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:00:29,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:00:29,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:00:29,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:00:29,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:00:29,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:00:29,151 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:00:29,151 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:00:29,152 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:00:29,152 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:00:29,153 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:00:29,153 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:00:29,154 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:00:29,154 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:00:29,155 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:00:29,155 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:00:29,156 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:00:29,156 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:00:29,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:00:29,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:00:29,158 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:00:29,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:00:29,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:00:29,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:00:29,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:00:29,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:00:29,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:00:29,160 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:00:29,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:00:29,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:00:29,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:00:29,161 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:00:29,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:00:29,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:00:29,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:00:29,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:00:29,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:00:29,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:00:29,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:00:29,163 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:00:29,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:00:29,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:00:29,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:00:29,164 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:00:29,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:00:29,164 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_0010c158-b06f-4bf9-8830-ab0252de16ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> befa5004268d4c15cae2c05402ac6cc0f86cef85e498084909e66f7e8cc4b8f3 [2023-12-02 15:00:29,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:00:29,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:00:29,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:00:29,439 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:00:29,439 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:00:29,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound5.c [2023-12-02 15:00:32,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:00:32,381 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:00:32,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound5.c [2023-12-02 15:00:32,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/data/5a8014055/402e70c0df1440fa84f85ea2f7809d8c/FLAG0e174f748 [2023-12-02 15:00:32,404 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/data/5a8014055/402e70c0df1440fa84f85ea2f7809d8c [2023-12-02 15:00:32,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:00:32,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:00:32,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:00:32,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:00:32,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:00:32,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7586b8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32, skipping insertion in model container [2023-12-02 15:00:32,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,440 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:00:32,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:00:32,629 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:00:32,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:00:32,667 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:00:32,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32 WrapperNode [2023-12-02 15:00:32,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:00:32,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:00:32,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:00:32,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:00:32,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,710 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-12-02 15:00:32,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:00:32,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:00:32,712 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:00:32,712 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:00:32,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:00:32,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:00:32,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:00:32,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:00:32,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (1/1) ... [2023-12-02 15:00:32,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:00:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:32,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:00:32,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:00:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:00:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:00:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:00:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:00:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:00:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:00:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:00:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:00:32,872 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:00:32,874 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:00:33,069 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:00:33,103 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:00:33,103 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-02 15:00:33,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:00:33 BoogieIcfgContainer [2023-12-02 15:00:33,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:00:33,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:00:33,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:00:33,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:00:33,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:00:32" (1/3) ... [2023-12-02 15:00:33,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cd3dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:00:33, skipping insertion in model container [2023-12-02 15:00:33,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:00:32" (2/3) ... [2023-12-02 15:00:33,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cd3dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:00:33, skipping insertion in model container [2023-12-02 15:00:33,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:00:33" (3/3) ... [2023-12-02 15:00:33,113 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound5.c [2023-12-02 15:00:33,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:00:33,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-02 15:00:33,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:00:33,173 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;@c308bb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:00:33,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-02 15:00:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 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 15:00:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:00:33,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:33,194 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:33,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:33,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1203328600, now seen corresponding path program 1 times [2023-12-02 15:00:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:33,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156113410] [2023-12-02 15:00:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:33,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:33,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156113410] [2023-12-02 15:00:33,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156113410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:33,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:33,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:00:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308365296] [2023-12-02 15:00:33,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:33,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:00:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:00:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:00:33,516 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.75) internal successors, (35), 26 states have internal predecessors, (35), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:00:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:33,604 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2023-12-02 15:00:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:00:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-12-02 15:00:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:33,613 INFO L225 Difference]: With dead ends: 72 [2023-12-02 15:00:33,614 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 15:00:33,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 15:00:33,620 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:33,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:00:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 15:00:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-12-02 15:00:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:00:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2023-12-02 15:00:33,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 16 [2023-12-02 15:00:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:33,658 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2023-12-02 15:00:33,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:00:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2023-12-02 15:00:33,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 15:00:33,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:33,661 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:00:33,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:33,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1195344561, now seen corresponding path program 1 times [2023-12-02 15:00:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:33,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725306383] [2023-12-02 15:00:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:33,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:33,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73940867] [2023-12-02 15:00:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:33,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:33,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:33,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:00:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:33,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:00:33,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:33,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:00:33,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:33,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725306383] [2023-12-02 15:00:33,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:33,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73940867] [2023-12-02 15:00:33,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73940867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:33,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:33,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:00:33,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924040037] [2023-12-02 15:00:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:33,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:00:33,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:33,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:00:33,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:00:33,881 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:00:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:33,986 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2023-12-02 15:00:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:00:33,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2023-12-02 15:00:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:33,988 INFO L225 Difference]: With dead ends: 55 [2023-12-02 15:00:33,989 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 15:00:33,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:00:33,991 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:33,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 134 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:00:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 15:00:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2023-12-02 15:00:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 35 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:00:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2023-12-02 15:00:34,003 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 24 [2023-12-02 15:00:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:34,004 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2023-12-02 15:00:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:00:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2023-12-02 15:00:34,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 15:00:34,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:34,005 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:34,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:00:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:34,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:34,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1599024339, now seen corresponding path program 1 times [2023-12-02 15:00:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843239207] [2023-12-02 15:00:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:34,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:34,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767146277] [2023-12-02 15:00:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:34,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:34,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:34,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:34,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:00:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:34,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:00:34,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:34,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:00:34,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:34,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843239207] [2023-12-02 15:00:34,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:34,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767146277] [2023-12-02 15:00:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767146277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:00:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512504636] [2023-12-02 15:00:34,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:00:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:00:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:00:34,382 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:00:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:34,463 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2023-12-02 15:00:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:00:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2023-12-02 15:00:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:34,466 INFO L225 Difference]: With dead ends: 80 [2023-12-02 15:00:34,466 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 15:00:34,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:00:34,468 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:34,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:00:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 15:00:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 15:00:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 40 states have internal predecessors, (48), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:00:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-12-02 15:00:34,480 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 25 [2023-12-02 15:00:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:34,480 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-12-02 15:00:34,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:00:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-12-02 15:00:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 15:00:34,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:34,482 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:34,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:00:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:34,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:34,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1822769980, now seen corresponding path program 1 times [2023-12-02 15:00:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:34,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016252247] [2023-12-02 15:00:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:34,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:34,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411652768] [2023-12-02 15:00:34,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:34,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:34,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:34,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:34,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:00:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:34,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:00:34,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:34,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:00:34,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:34,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016252247] [2023-12-02 15:00:34,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:34,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411652768] [2023-12-02 15:00:34,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411652768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:34,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:34,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:00:34,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239235062] [2023-12-02 15:00:34,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:34,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:00:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:00:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:00:34,866 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:00:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:35,023 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-12-02 15:00:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:00:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2023-12-02 15:00:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:35,025 INFO L225 Difference]: With dead ends: 60 [2023-12-02 15:00:35,025 INFO L226 Difference]: Without dead ends: 57 [2023-12-02 15:00:35,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:00:35,027 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:35,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 83 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:00:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-02 15:00:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2023-12-02 15:00:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 15:00:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-12-02 15:00:35,038 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 32 [2023-12-02 15:00:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-12-02 15:00:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:00:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-12-02 15:00:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 15:00:35,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:35,040 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:35,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:00:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:35,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:35,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash -671294444, now seen corresponding path program 1 times [2023-12-02 15:00:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095831171] [2023-12-02 15:00:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:35,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:35,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146888747] [2023-12-02 15:00:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:35,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:35,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:35,264 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:35,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:00:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:35,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:00:35,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:35,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:00:35,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095831171] [2023-12-02 15:00:35,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146888747] [2023-12-02 15:00:35,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146888747] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:00:35,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:00:35,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-12-02 15:00:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563187473] [2023-12-02 15:00:35,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:00:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:00:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:00:35,537 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:00:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:35,688 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2023-12-02 15:00:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:00:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2023-12-02 15:00:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:35,690 INFO L225 Difference]: With dead ends: 65 [2023-12-02 15:00:35,691 INFO L226 Difference]: Without dead ends: 64 [2023-12-02 15:00:35,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-12-02 15:00:35,692 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:35,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 140 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:00:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-02 15:00:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2023-12-02 15:00:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 43 states have internal predecessors, (52), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 15:00:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-12-02 15:00:35,703 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-12-02 15:00:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:35,704 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-12-02 15:00:35,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:00:35,704 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-12-02 15:00:35,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 15:00:35,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:35,705 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:35,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:00:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:35,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:35,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash -671256708, now seen corresponding path program 1 times [2023-12-02 15:00:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:35,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537248406] [2023-12-02 15:00:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:35,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:35,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597126983] [2023-12-02 15:00:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:35,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:35,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:00:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:35,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:00:35,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:36,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:00:36,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537248406] [2023-12-02 15:00:36,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597126983] [2023-12-02 15:00:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597126983] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:00:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1681076610] [2023-12-02 15:00:36,212 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 15:00:36,212 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:00:36,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:00:36,221 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:00:36,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:00:41,344 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 118 for LOIs [2023-12-02 15:00:41,754 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:00:41,756 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:00:47,254 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1536#(and (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= 1 ~counter~0))' at error location [2023-12-02 15:00:47,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:00:47,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:00:47,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-12-02 15:00:47,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486888238] [2023-12-02 15:00:47,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:00:47,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:00:47,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:00:47,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 15:00:47,257 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 15:00:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:47,865 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2023-12-02 15:00:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 15:00:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 33 [2023-12-02 15:00:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:47,867 INFO L225 Difference]: With dead ends: 112 [2023-12-02 15:00:47,867 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 15:00:47,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 15:00:47,869 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:47,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 214 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:00:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 15:00:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2023-12-02 15:00:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.25) internal successors, (70), 58 states have internal predecessors, (70), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:00:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2023-12-02 15:00:47,881 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 33 [2023-12-02 15:00:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:47,881 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2023-12-02 15:00:47,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 15:00:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2023-12-02 15:00:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 15:00:47,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:47,882 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:47,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:00:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:48,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:48,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1754090747, now seen corresponding path program 1 times [2023-12-02 15:00:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483346983] [2023-12-02 15:00:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:48,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898002786] [2023-12-02 15:00:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:48,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:48,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:48,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:48,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:00:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:48,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:00:48,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:48,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:00:48,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:48,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483346983] [2023-12-02 15:00:48,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:48,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898002786] [2023-12-02 15:00:48,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898002786] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:00:48,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:00:48,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-12-02 15:00:48,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292907640] [2023-12-02 15:00:48,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:48,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:00:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:00:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-02 15:00:48,320 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:00:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:48,581 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2023-12-02 15:00:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:00:48,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-12-02 15:00:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:48,582 INFO L225 Difference]: With dead ends: 105 [2023-12-02 15:00:48,582 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 15:00:48,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-12-02 15:00:48,583 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:48,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 122 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:00:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 15:00:48,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-02 15:00:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 59 states have internal predecessors, (71), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:00:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2023-12-02 15:00:48,590 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 37 [2023-12-02 15:00:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:48,591 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2023-12-02 15:00:48,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:00:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2023-12-02 15:00:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 15:00:48,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:48,592 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-02 15:00:48,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:00:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:48,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:48,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 406296643, now seen corresponding path program 1 times [2023-12-02 15:00:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549409707] [2023-12-02 15:00:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:48,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:48,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164749880] [2023-12-02 15:00:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:48,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:48,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:48,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:00:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:48,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:00:48,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:00:48,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:00:48,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:48,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549409707] [2023-12-02 15:00:48,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:48,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164749880] [2023-12-02 15:00:48,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164749880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:00:48,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:00:48,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:00:48,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770442150] [2023-12-02 15:00:48,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:00:48,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:00:48,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:00:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:00:48,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:00:48,932 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 15:00:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:49,328 INFO L93 Difference]: Finished difference Result 147 states and 181 transitions. [2023-12-02 15:00:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:00:49,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 41 [2023-12-02 15:00:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:49,330 INFO L225 Difference]: With dead ends: 147 [2023-12-02 15:00:49,330 INFO L226 Difference]: Without dead ends: 122 [2023-12-02 15:00:49,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:00:49,331 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 28 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:49,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 140 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:00:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-02 15:00:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2023-12-02 15:00:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 79 states have internal predecessors, (99), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 15:00:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 131 transitions. [2023-12-02 15:00:49,341 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 131 transitions. Word has length 41 [2023-12-02 15:00:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:49,342 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 131 transitions. [2023-12-02 15:00:49,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 15:00:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 131 transitions. [2023-12-02 15:00:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 15:00:49,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:49,344 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-02 15:00:49,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 15:00:49,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:49,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:00:49,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash 406397931, now seen corresponding path program 1 times [2023-12-02 15:00:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:00:49,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109523417] [2023-12-02 15:00:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:49,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:00:49,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:00:49,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690311616] [2023-12-02 15:00:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:49,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:49,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:49,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:49,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:00:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:49,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:00:49,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:00:49,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:00:49,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:00:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109523417] [2023-12-02 15:00:49,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:00:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690311616] [2023-12-02 15:00:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690311616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:00:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804242213] [2023-12-02 15:00:49,807 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:00:49,807 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:00:49,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:00:49,808 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:00:49,808 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:00:51,308 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2023-12-02 15:00:51,309 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:00:51,311 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:01:19,019 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3048#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (= (mod (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|) 4294967296) (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296)) (<= 1 |#StackHeapBarrier|) (<= (+ (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 1) (mod (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 4294967296)) (= |ULTIMATE.start_main_~v~0#1| 0) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 15:01:19,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:01:19,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:01:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-12-02 15:01:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291972133] [2023-12-02 15:01:19,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:01:19,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:01:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:01:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:01:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 15:01:19,022 INFO L87 Difference]: Start difference. First operand 104 states and 131 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 15:01:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:01:20,007 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2023-12-02 15:01:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:01:20,008 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 41 [2023-12-02 15:01:20,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:01:20,010 INFO L225 Difference]: With dead ends: 212 [2023-12-02 15:01:20,010 INFO L226 Difference]: Without dead ends: 163 [2023-12-02 15:01:20,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=482, Invalid=2824, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 15:01:20,012 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:01:20,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 249 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:01:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-02 15:01:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2023-12-02 15:01:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 111 states have (on average 1.2522522522522523) internal successors, (139), 113 states have internal predecessors, (139), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 15:01:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 183 transitions. [2023-12-02 15:01:20,029 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 183 transitions. Word has length 41 [2023-12-02 15:01:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:01:20,030 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 183 transitions. [2023-12-02 15:01:20,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-12-02 15:01:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 183 transitions. [2023-12-02 15:01:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 15:01:20,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:01:20,032 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-12-02 15:01:20,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:01:20,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:01:20,232 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:01:20,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:01:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1219674066, now seen corresponding path program 1 times [2023-12-02 15:01:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:01:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958980794] [2023-12-02 15:01:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:01:20,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:01:20,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:01:20,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054528802] [2023-12-02 15:01:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:01:20,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:01:20,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:01:20,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:01:20,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:01:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:01:20,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:01:20,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:01:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:01:20,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:01:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 15:01:20,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:01:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958980794] [2023-12-02 15:01:20,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:01:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054528802] [2023-12-02 15:01:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054528802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:01:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1754437954] [2023-12-02 15:01:20,464 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-12-02 15:01:20,464 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:01:20,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:01:20,465 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:01:20,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:01:23,212 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-12-02 15:01:23,214 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:01:23,215 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:01:57,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3874#(and (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (<= 1 |#StackHeapBarrier|) (= ~counter~0 2147483647) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296)))' at error location [2023-12-02 15:01:57,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:01:57,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:01:57,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2023-12-02 15:01:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175329864] [2023-12-02 15:01:57,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:01:57,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:01:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:01:57,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:01:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:01:57,072 INFO L87 Difference]: Start difference. First operand 149 states and 183 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-02 15:01:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:01:57,958 INFO L93 Difference]: Finished difference Result 217 states and 272 transitions. [2023-12-02 15:01:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 15:01:57,958 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 45 [2023-12-02 15:01:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:01:57,960 INFO L225 Difference]: With dead ends: 217 [2023-12-02 15:01:57,960 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 15:01:57,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 90 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=261, Invalid=2091, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 15:01:57,963 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 46 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:01:57,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 144 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:01:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 15:01:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2023-12-02 15:01:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 121 states have (on average 1.2314049586776858) internal successors, (149), 123 states have internal predecessors, (149), 23 states have call successors, (23), 14 states have call predecessors, (23), 14 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 15:01:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 195 transitions. [2023-12-02 15:01:57,980 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 195 transitions. Word has length 45 [2023-12-02 15:01:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:01:57,981 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 195 transitions. [2023-12-02 15:01:57,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-02 15:01:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 195 transitions. [2023-12-02 15:01:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 15:01:57,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:01:57,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:01:57,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:01:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:01:58,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:01:58,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:01:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2142934804, now seen corresponding path program 1 times [2023-12-02 15:01:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:01:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058052609] [2023-12-02 15:01:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:01:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:01:58,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:01:58,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741437871] [2023-12-02 15:01:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:01:58,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:01:58,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:01:58,195 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:01:58,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:01:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:01:58,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:01:58,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:01:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:01:58,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:01:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:01:58,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:01:58,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058052609] [2023-12-02 15:01:58,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:01:58,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741437871] [2023-12-02 15:01:58,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741437871] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:01:58,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874116089] [2023-12-02 15:01:58,487 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:01:58,488 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:01:58,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:01:58,488 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:01:58,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:02:01,418 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:02:01,419 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:02:01,420 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:02:18,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [874116089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:02:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:02:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [10, 11] total 45 [2023-12-02 15:02:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608423766] [2023-12-02 15:02:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:02:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 15:02:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:02:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 15:02:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1764, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 15:02:18,509 INFO L87 Difference]: Start difference. First operand 161 states and 195 transitions. Second operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:02:22,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:24,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:26,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:28,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:30,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:34,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:36,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:38,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 15:02:41,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:03:07,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 15:03:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:03:07,167 INFO L93 Difference]: Finished difference Result 261 states and 321 transitions. [2023-12-02 15:03:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 15:03:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 49 [2023-12-02 15:03:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:03:07,169 INFO L225 Difference]: With dead ends: 261 [2023-12-02 15:03:07,169 INFO L226 Difference]: Without dead ends: 212 [2023-12-02 15:03:07,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=549, Invalid=3356, Unknown=1, NotChecked=0, Total=3906 [2023-12-02 15:03:07,171 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 21 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:03:07,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 153 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 912 Invalid, 9 Unknown, 0 Unchecked, 30.6s Time] [2023-12-02 15:03:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-02 15:03:07,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2023-12-02 15:03:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.2312925170068028) internal successors, (181), 150 states have internal predecessors, (181), 27 states have call successors, (27), 17 states have call predecessors, (27), 17 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:03:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 235 transitions. [2023-12-02 15:03:07,195 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 235 transitions. Word has length 49 [2023-12-02 15:03:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:03:07,195 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 235 transitions. [2023-12-02 15:03:07,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:03:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 235 transitions. [2023-12-02 15:03:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 15:03:07,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:03:07,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:03:07,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:03:07,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 15:03:07,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:03:07,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:03:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1155697485, now seen corresponding path program 1 times [2023-12-02 15:03:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:03:07,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099813512] [2023-12-02 15:03:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:07,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:03:07,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:03:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784156222] [2023-12-02 15:03:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:07,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:03:07,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:03:07,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:03:07,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:03:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:03:07,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:03:07,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:03:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:03:07,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:03:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:03:07,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:03:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099813512] [2023-12-02 15:03:07,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:03:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784156222] [2023-12-02 15:03:07,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784156222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:03:07,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1737752558] [2023-12-02 15:03:07,672 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:03:07,672 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:03:07,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:03:07,672 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:03:07,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:03:09,423 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2023-12-02 15:03:09,424 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:03:09,425 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:03:29,890 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_ULTIMATE.start_main_#t~post8#1| 2)) (.cse4 (= 2 c_~counter~0)) (.cse0 (<= 1 |c_#StackHeapBarrier|)) (.cse1 (= |c_ULTIMATE.start_main_~v~0#1| 0)) (.cse2 (<= 3 c_~counter~0))) (and (or (and .cse0 (<= 3 |c_ULTIMATE.start_main_#t~post8#1|) .cse1 .cse2) (and .cse0 .cse1 .cse3 .cse4)) (let ((.cse9 (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296)) (.cse11 (= (mod (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~u~0#1|) 4294967296) (mod (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|) 4294967296)))) (or (let ((.cse8 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296)) (.cse6 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse7 (mod |c_ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse10 (select |c_#memory_int| 1)) (.cse5 (select |c_#memory_int| 2))) (and (= 108 (select .cse5 0)) (= (select |c_#valid| 0) 0) (= (select |c_#valid| 3) 1) (= (select .cse5 6) 0) (= (select .cse5 1) 99) (= |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1|) (= 2 (select |c_#length| 1)) (= (select |c_#valid| 1) 1) (<= 1 .cse6) (<= .cse7 65535) .cse0 (= |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~a~0#1|) (= (select .cse5 2) 109) (not (= .cse8 .cse9)) (<= .cse9 .cse8) (= 7 (select |c_#length| 2)) .cse1 (= (select |c_#valid| 2) 1) (<= .cse6 65535) (= (select .cse10 1) 0) .cse3 (= |c_ULTIMATE.start_main_~u~0#1| |c_ULTIMATE.start_main_~b~0#1|) (<= 1 .cse7) (= (select |c_#length| 3) 12) (= (select .cse5 5) 99) (= 48 (select .cse10 0)) .cse11 .cse4 (= 49 (select .cse5 3)) (= (select .cse5 4) 46))) (and (= |c_ULTIMATE.start_main_#t~post8#1| c_~counter~0) .cse0 (<= (+ .cse9 1) (mod (+ |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) .cse1 (<= 0 (+ |c_ULTIMATE.start_main_#t~post8#1| 2147483649)) .cse11 .cse2))))) is different from false [2023-12-02 15:03:29,893 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5745#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647) (= |ULTIMATE.start_main_~v~0#1| 0))' at error location [2023-12-02 15:03:29,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:03:29,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:03:29,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2023-12-02 15:03:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600888238] [2023-12-02 15:03:29,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:03:29,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:03:29,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:03:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:03:29,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1094, Unknown=1, NotChecked=68, Total=1332 [2023-12-02 15:03:29,895 INFO L87 Difference]: Start difference. First operand 194 states and 235 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 15:03:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:03:30,278 INFO L93 Difference]: Finished difference Result 247 states and 306 transitions. [2023-12-02 15:03:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 15:03:30,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 53 [2023-12-02 15:03:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:03:30,282 INFO L225 Difference]: With dead ends: 247 [2023-12-02 15:03:30,282 INFO L226 Difference]: Without dead ends: 198 [2023-12-02 15:03:30,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 109 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=242, Invalid=1741, Unknown=1, NotChecked=86, Total=2070 [2023-12-02 15:03:30,283 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:03:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 189 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:03:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-02 15:03:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2023-12-02 15:03:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 151 states have (on average 1.2251655629139073) internal successors, (185), 154 states have internal predecessors, (185), 27 states have call successors, (27), 17 states have call predecessors, (27), 17 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:03:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 239 transitions. [2023-12-02 15:03:30,306 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 239 transitions. Word has length 53 [2023-12-02 15:03:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:03:30,306 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 239 transitions. [2023-12-02 15:03:30,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 15:03:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 239 transitions. [2023-12-02 15:03:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 15:03:30,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:03:30,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:03:30,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:03:30,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:03:30,508 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:03:30,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:03:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash -361769345, now seen corresponding path program 1 times [2023-12-02 15:03:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:03:30,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455457981] [2023-12-02 15:03:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:30,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:03:30,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:03:30,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178263450] [2023-12-02 15:03:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:30,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:03:30,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:03:30,518 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:03:30,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:03:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:03:30,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:03:30,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:03:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:03:30,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:03:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 15:03:30,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:03:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455457981] [2023-12-02 15:03:30,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:03:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178263450] [2023-12-02 15:03:30,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178263450] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:03:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1320143686] [2023-12-02 15:03:30,779 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-12-02 15:03:30,779 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:03:30,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:03:30,780 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:03:30,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:03:32,672 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 118 for LOIs [2023-12-02 15:03:32,723 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:03:32,724 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:03:39,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6717#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (<= 1 |#StackHeapBarrier|) (<= ~counter~0 2147483647) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 15:03:39,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:03:39,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:03:39,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2023-12-02 15:03:39,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258881316] [2023-12-02 15:03:39,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:03:39,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:03:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:03:39,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:03:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 15:03:39,494 INFO L87 Difference]: Start difference. First operand 198 states and 239 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 15:03:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:03:40,221 INFO L93 Difference]: Finished difference Result 248 states and 307 transitions. [2023-12-02 15:03:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 15:03:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 53 [2023-12-02 15:03:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:03:40,224 INFO L225 Difference]: With dead ends: 248 [2023-12-02 15:03:40,224 INFO L226 Difference]: Without dead ends: 199 [2023-12-02 15:03:40,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 113 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=267, Invalid=1539, Unknown=0, NotChecked=0, Total=1806 [2023-12-02 15:03:40,225 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:03:40,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 194 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:03:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-02 15:03:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-12-02 15:03:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 27 states have call successors, (27), 17 states have call predecessors, (27), 17 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-02 15:03:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 240 transitions. [2023-12-02 15:03:40,243 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 240 transitions. Word has length 53 [2023-12-02 15:03:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:03:40,243 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 240 transitions. [2023-12-02 15:03:40,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 5 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2023-12-02 15:03:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 240 transitions. [2023-12-02 15:03:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 15:03:40,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:03:40,245 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:03:40,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:03:40,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 15:03:40,445 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:03:40,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:03:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 3003121, now seen corresponding path program 1 times [2023-12-02 15:03:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:03:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589050418] [2023-12-02 15:03:40,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:40,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:03:40,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:03:40,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814063482] [2023-12-02 15:03:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:03:40,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:03:40,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:03:40,455 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:03:40,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:03:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:03:40,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:03:40,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:03:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:03:40,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:03:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 15:03:40,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:03:40,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589050418] [2023-12-02 15:03:40,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:03:40,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814063482] [2023-12-02 15:03:40,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814063482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:03:40,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1848687447] [2023-12-02 15:03:40,782 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:03:40,782 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:03:40,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:03:40,782 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:03:40,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:03:42,566 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:03:42,567 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:03:42,568 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:03:59,513 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7726#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (= |ULTIMATE.start_main_~v~0#1| 0))' at error location [2023-12-02 15:03:59,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:03:59,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:03:59,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-12-02 15:03:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999800949] [2023-12-02 15:03:59,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:03:59,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 15:03:59,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:03:59,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 15:03:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2104, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 15:03:59,515 INFO L87 Difference]: Start difference. First operand 199 states and 240 transitions. Second operand has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-02 15:04:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:00,509 INFO L93 Difference]: Finished difference Result 278 states and 337 transitions. [2023-12-02 15:04:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-02 15:04:00,510 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 57 [2023-12-02 15:04:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:00,512 INFO L225 Difference]: With dead ends: 278 [2023-12-02 15:04:00,512 INFO L226 Difference]: Without dead ends: 275 [2023-12-02 15:04:00,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2079 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=754, Invalid=4946, Unknown=0, NotChecked=0, Total=5700 [2023-12-02 15:04:00,514 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 139 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:00,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 275 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:04:00,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-02 15:04:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 222. [2023-12-02 15:04:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 169 states have (on average 1.2307692307692308) internal successors, (208), 172 states have internal predecessors, (208), 30 states have call successors, (30), 20 states have call predecessors, (30), 20 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-02 15:04:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 268 transitions. [2023-12-02 15:04:00,536 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 268 transitions. Word has length 57 [2023-12-02 15:04:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:00,536 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 268 transitions. [2023-12-02 15:04:00,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-02 15:04:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 268 transitions. [2023-12-02 15:04:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 15:04:00,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:00,537 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:00,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:04:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 15:04:00,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:04:00,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 112331837, now seen corresponding path program 1 times [2023-12-02 15:04:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344530728] [2023-12-02 15:04:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:00,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:04:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866588279] [2023-12-02 15:04:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:00,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:04:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:00,746 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:04:00,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:04:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:00,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:04:00,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:04:00,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:04:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 15:04:01,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:01,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344530728] [2023-12-02 15:04:01,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:04:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866588279] [2023-12-02 15:04:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866588279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:04:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1199531729] [2023-12-02 15:04:01,053 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:04:01,053 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:04:01,053 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:04:01,053 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:04:01,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:04:03,012 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 79 for LOIs [2023-12-02 15:04:03,027 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:04:03,028 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:04:48,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8844#(and (<= 2147483647 |ULTIMATE.start_main_#t~post8#1|) (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (<= 1 |#StackHeapBarrier|) (<= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296)) (= ~counter~0 |ULTIMATE.start_main_#t~post8#1|))' at error location [2023-12-02 15:04:48,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:04:48,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:04:48,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2023-12-02 15:04:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639190021] [2023-12-02 15:04:48,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:04:48,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 15:04:48,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 15:04:48,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=2063, Unknown=2, NotChecked=0, Total=2450 [2023-12-02 15:04:48,025 INFO L87 Difference]: Start difference. First operand 222 states and 268 transitions. Second operand has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-02 15:04:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:50,314 INFO L93 Difference]: Finished difference Result 424 states and 518 transitions. [2023-12-02 15:04:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-02 15:04:50,315 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 57 [2023-12-02 15:04:50,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:50,318 INFO L225 Difference]: With dead ends: 424 [2023-12-02 15:04:50,318 INFO L226 Difference]: Without dead ends: 421 [2023-12-02 15:04:50,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 46.1s TimeCoverageRelationStatistics Valid=884, Invalid=5434, Unknown=2, NotChecked=0, Total=6320 [2023-12-02 15:04:50,321 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 163 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:50,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 216 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 15:04:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-12-02 15:04:50,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 360. [2023-12-02 15:04:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 271 states have (on average 1.2398523985239853) internal successors, (336), 275 states have internal predecessors, (336), 49 states have call successors, (49), 37 states have call predecessors, (49), 37 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-02 15:04:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 434 transitions. [2023-12-02 15:04:50,355 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 434 transitions. Word has length 57 [2023-12-02 15:04:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:50,355 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 434 transitions. [2023-12-02 15:04:50,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-02 15:04:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 434 transitions. [2023-12-02 15:04:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 15:04:50,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:50,356 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:50,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:04:50,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:04:50,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:04:50,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1939189632, now seen corresponding path program 2 times [2023-12-02 15:04:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795639785] [2023-12-02 15:04:50,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:50,566 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:04:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042325995] [2023-12-02 15:04:50,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:04:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:04:50,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:50,567 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:04:50,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:04:50,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 15:04:50,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:04:50,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:04:50,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 15:04:50,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:04:50,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795639785] [2023-12-02 15:04:50,647 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:04:50,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042325995] [2023-12-02 15:04:50,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042325995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:50,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:50,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:04:50,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363790818] [2023-12-02 15:04:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:50,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:04:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:04:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:04:50,648 INFO L87 Difference]: Start difference. First operand 360 states and 434 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:04:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:50,946 INFO L93 Difference]: Finished difference Result 427 states and 511 transitions. [2023-12-02 15:04:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:04:50,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2023-12-02 15:04:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:50,949 INFO L225 Difference]: With dead ends: 427 [2023-12-02 15:04:50,949 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 15:04:50,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-02 15:04:50,950 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:50,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 112 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:04:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 15:04:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 397. [2023-12-02 15:04:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 297 states have (on average 1.2323232323232323) internal successors, (366), 306 states have internal predecessors, (366), 54 states have call successors, (54), 43 states have call predecessors, (54), 43 states have return successors, (54), 47 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-02 15:04:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 474 transitions. [2023-12-02 15:04:50,985 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 474 transitions. Word has length 61 [2023-12-02 15:04:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:50,985 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 474 transitions. [2023-12-02 15:04:50,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:04:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 474 transitions. [2023-12-02 15:04:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 15:04:50,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:50,987 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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] [2023-12-02 15:04:50,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-02 15:04:51,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:04:51,188 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:04:51,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:51,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1456824155, now seen corresponding path program 1 times [2023-12-02 15:04:51,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130905052] [2023-12-02 15:04:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:51,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:04:51,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492702254] [2023-12-02 15:04:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:51,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:04:51,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:51,195 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:04:51,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:04:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:51,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:04:51,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 15:04:51,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:04:51,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130905052] [2023-12-02 15:04:51,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:04:51,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492702254] [2023-12-02 15:04:51,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492702254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:04:51,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:04:51,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:04:51,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208805077] [2023-12-02 15:04:51,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:04:51,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:04:51,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:04:51,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:04:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:04:51,273 INFO L87 Difference]: Start difference. First operand 397 states and 474 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:04:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:04:51,394 INFO L93 Difference]: Finished difference Result 521 states and 628 transitions. [2023-12-02 15:04:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:04:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2023-12-02 15:04:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:04:51,397 INFO L225 Difference]: With dead ends: 521 [2023-12-02 15:04:51,397 INFO L226 Difference]: Without dead ends: 371 [2023-12-02 15:04:51,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:04:51,398 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 15 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:04:51,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:04:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-02 15:04:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 345. [2023-12-02 15:04:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 263 states have (on average 1.2357414448669202) internal successors, (325), 266 states have internal predecessors, (325), 44 states have call successors, (44), 35 states have call predecessors, (44), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 15:04:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 413 transitions. [2023-12-02 15:04:51,437 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 413 transitions. Word has length 65 [2023-12-02 15:04:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:04:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 413 transitions. [2023-12-02 15:04:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 15:04:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 413 transitions. [2023-12-02 15:04:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 15:04:51,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:04:51,438 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:04:51,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:04:51,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:04:51,644 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:04:51,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:04:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash -598876519, now seen corresponding path program 1 times [2023-12-02 15:04:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:04:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518458131] [2023-12-02 15:04:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:04:51,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:04:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355293183] [2023-12-02 15:04:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:04:51,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:04:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:04:51,655 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:04:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:04:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:04:51,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 15:04:51,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:04:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:04:51,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:04:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 15:04:52,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:04:52,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518458131] [2023-12-02 15:04:52,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:04:52,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355293183] [2023-12-02 15:04:52,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355293183] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:04:52,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1052802308] [2023-12-02 15:04:52,085 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-12-02 15:04:52,085 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:04:52,085 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:04:52,085 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:04:52,085 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:04:55,640 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-12-02 15:04:55,642 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:04:55,643 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:05:25,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13125#(and (<= 1 |#StackHeapBarrier|) (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647))' at error location [2023-12-02 15:05:25,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:05:25,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:05:25,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 33 [2023-12-02 15:05:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366068686] [2023-12-02 15:05:25,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:05:25,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 15:05:25,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:05:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 15:05:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=2860, Unknown=1, NotChecked=0, Total=3306 [2023-12-02 15:05:25,175 INFO L87 Difference]: Start difference. First operand 345 states and 413 transitions. Second operand has 34 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 34 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-02 15:05:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:27,608 INFO L93 Difference]: Finished difference Result 557 states and 676 transitions. [2023-12-02 15:05:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-02 15:05:27,608 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 34 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 65 [2023-12-02 15:05:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:27,612 INFO L225 Difference]: With dead ends: 557 [2023-12-02 15:05:27,612 INFO L226 Difference]: Without dead ends: 551 [2023-12-02 15:05:27,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=1299, Invalid=8012, Unknown=1, NotChecked=0, Total=9312 [2023-12-02 15:05:27,616 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 197 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:27,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 361 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 15:05:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-02 15:05:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 459. [2023-12-02 15:05:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 350 states have (on average 1.24) internal successors, (434), 357 states have internal predecessors, (434), 59 states have call successors, (59), 47 states have call predecessors, (59), 47 states have return successors, (59), 54 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 15:05:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 552 transitions. [2023-12-02 15:05:27,667 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 552 transitions. Word has length 65 [2023-12-02 15:05:27,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:27,667 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 552 transitions. [2023-12-02 15:05:27,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.5454545454545454) internal successors, (84), 34 states have internal predecessors, (84), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-12-02 15:05:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 552 transitions. [2023-12-02 15:05:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 15:05:27,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:27,669 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:05:27,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:05:27,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 15:05:27,870 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:05:27,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1570850903, now seen corresponding path program 1 times [2023-12-02 15:05:27,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:05:27,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333264790] [2023-12-02 15:05:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:27,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:05:27,881 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:05:27,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511871734] [2023-12-02 15:05:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:27,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:27,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:27,882 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:27,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:05:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:27,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:05:27,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-02 15:05:27,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:05:27,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:05:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333264790] [2023-12-02 15:05:27,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:05:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511871734] [2023-12-02 15:05:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511871734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:05:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:05:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:05:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979690039] [2023-12-02 15:05:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:05:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:05:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:05:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:05:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:05:27,969 INFO L87 Difference]: Start difference. First operand 459 states and 552 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:05:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:05:28,037 INFO L93 Difference]: Finished difference Result 633 states and 757 transitions. [2023-12-02 15:05:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:05:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2023-12-02 15:05:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:05:28,041 INFO L225 Difference]: With dead ends: 633 [2023-12-02 15:05:28,041 INFO L226 Difference]: Without dead ends: 405 [2023-12-02 15:05:28,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:05:28,042 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:05:28,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 119 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:05:28,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-12-02 15:05:28,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 344. [2023-12-02 15:05:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.17578125) internal successors, (301), 258 states have internal predecessors, (301), 44 states have call successors, (44), 41 states have call predecessors, (44), 41 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 15:05:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 389 transitions. [2023-12-02 15:05:28,083 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 389 transitions. Word has length 69 [2023-12-02 15:05:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:05:28,083 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 389 transitions. [2023-12-02 15:05:28,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:05:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 389 transitions. [2023-12-02 15:05:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 15:05:28,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:05:28,085 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-02 15:05:28,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 15:05:28,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:28,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:05:28,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:05:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -35238605, now seen corresponding path program 1 times [2023-12-02 15:05:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:05:28,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066512320] [2023-12-02 15:05:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:05:28,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:05:28,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167511152] [2023-12-02 15:05:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:05:28,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:05:28,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:05:28,298 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:05:28,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:05:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:05:28,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:05:28,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:05:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:05:28,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:05:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 15:05:28,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:05:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066512320] [2023-12-02 15:05:28,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:05:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167511152] [2023-12-02 15:05:28,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167511152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:05:28,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [498697143] [2023-12-02 15:05:28,628 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:05:28,628 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:05:28,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:05:28,629 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:05:28,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:05:32,661 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 15:05:32,662 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:05:32,664 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:05:35,098 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (<= c_~counter~0 2147483647)) (.cse4 (<= 6 c_~counter~0)) (.cse0 (<= 1 |c_#StackHeapBarrier|)) (.cse1 (= |c_ULTIMATE.start_main_~v~0#1| 0)) (.cse2 (= c_~counter~0 0))) (and (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4)) (or (and .cse3 .cse4 (exists ((v_~counter~0_183 Int)) (let ((.cse5 (<= 2 v_~counter~0_183)) (.cse9 (<= 3 v_~counter~0_183)) (.cse10 (<= v_~counter~0_183 5))) (and (let ((.cse6 (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296)) (.cse7 (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~v~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~u~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~b~0#1|) 4294967296))) (.cse8 (= (+ v_~counter~0_183 1) c_~counter~0))) (or (and .cse5 .cse0 (<= .cse6 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296)) .cse7 .cse8) (and .cse9 .cse0 (<= (+ .cse6 1) (mod (+ |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) .cse7 .cse8 .cse10))) (or (and .cse5 .cse0) (and .cse9 .cse0 (= c_~counter~0 6) .cse10)))))) (let ((.cse12 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse13 (mod |c_ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse14 (select |c_#memory_int| 1)) (.cse11 (select |c_#memory_int| 2))) (and (= 108 (select .cse11 0)) (= (select |c_#valid| 0) 0) (= (select |c_#valid| 3) 1) (= (select .cse11 6) 0) (= (select .cse11 1) 99) (= |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~b~0#1|) (= 2 (select |c_#length| 1)) (= (select |c_#valid| 1) 1) (<= 1 .cse12) (<= .cse13 65535) .cse0 (= |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~a~0#1|) (= (select .cse11 2) 109) (= 7 (select |c_#length| 2)) .cse1 (= (select |c_#valid| 2) 1) (<= .cse12 65535) (= (select .cse14 1) 0) (= |c_ULTIMATE.start_main_~u~0#1| |c_ULTIMATE.start_main_~b~0#1|) (<= 1 .cse13) (= (select |c_#length| 3) 12) (= (select .cse11 5) 99) .cse2 (= 48 (select .cse14 0)) (= 49 (select .cse11 3)) (= (select .cse11 4) 46)))))) is different from false [2023-12-02 15:05:40,839 WARN L293 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 115 DAG size of output: 109 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:06:23,555 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16585#(and (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647))' at error location [2023-12-02 15:06:23,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:06:23,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:06:23,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 14 [2023-12-02 15:06:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918333657] [2023-12-02 15:06:23,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:06:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:06:23,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:06:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:06:23,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1211, Unknown=5, NotChecked=72, Total=1482 [2023-12-02 15:06:23,557 INFO L87 Difference]: Start difference. First operand 344 states and 389 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-02 15:06:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:06:24,211 INFO L93 Difference]: Finished difference Result 552 states and 621 transitions. [2023-12-02 15:06:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:06:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 69 [2023-12-02 15:06:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:06:24,213 INFO L225 Difference]: With dead ends: 552 [2023-12-02 15:06:24,214 INFO L226 Difference]: Without dead ends: 496 [2023-12-02 15:06:24,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 152 SyntacticMatches, 16 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=368, Invalid=2601, Unknown=5, NotChecked=106, Total=3080 [2023-12-02 15:06:24,215 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 60 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:06:24,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 208 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:06:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-02 15:06:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 453. [2023-12-02 15:06:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 341 states have (on average 1.1935483870967742) internal successors, (407), 343 states have internal predecessors, (407), 56 states have call successors, (56), 53 states have call predecessors, (56), 53 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 15:06:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 519 transitions. [2023-12-02 15:06:24,251 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 519 transitions. Word has length 69 [2023-12-02 15:06:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:06:24,251 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 519 transitions. [2023-12-02 15:06:24,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-02 15:06:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 519 transitions. [2023-12-02 15:06:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 15:06:24,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:06:24,253 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 15:06:24,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 15:06:24,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:24,453 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:06:24,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:06:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash -646811131, now seen corresponding path program 2 times [2023-12-02 15:06:24,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:06:24,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325942425] [2023-12-02 15:06:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:06:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:06:24,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:06:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349635029] [2023-12-02 15:06:24,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:06:24,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:06:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:06:24,461 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:06:24,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:06:24,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 15:06:24,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:06:24,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:06:24,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:06:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-02 15:06:24,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:06:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 15:06:24,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:06:24,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325942425] [2023-12-02 15:06:24,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:06:24,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349635029] [2023-12-02 15:06:24,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349635029] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:06:24,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [458036037] [2023-12-02 15:06:24,600 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:06:24,600 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:06:24,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:06:24,601 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:06:24,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:06:28,806 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 53 for LOIs [2023-12-02 15:06:28,818 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:06:28,820 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:07:18,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18438#(and (<= 0 ~counter~0) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= ~counter~0 2147483647))' at error location [2023-12-02 15:07:18,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:07:18,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:07:18,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 15:07:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748002514] [2023-12-02 15:07:18,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:07:18,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:07:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:07:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:07:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1161, Unknown=2, NotChecked=0, Total=1332 [2023-12-02 15:07:18,809 INFO L87 Difference]: Start difference. First operand 453 states and 519 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:07:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:07:19,371 INFO L93 Difference]: Finished difference Result 474 states and 540 transitions. [2023-12-02 15:07:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:07:19,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 69 [2023-12-02 15:07:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:07:19,374 INFO L225 Difference]: With dead ends: 474 [2023-12-02 15:07:19,374 INFO L226 Difference]: Without dead ends: 462 [2023-12-02 15:07:19,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 166 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=216, Invalid=1504, Unknown=2, NotChecked=0, Total=1722 [2023-12-02 15:07:19,376 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:07:19,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 176 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:07:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-02 15:07:19,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 324. [2023-12-02 15:07:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 246 states have (on average 1.1869918699186992) internal successors, (292), 248 states have internal predecessors, (292), 39 states have call successors, (39), 36 states have call predecessors, (39), 36 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-02 15:07:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 370 transitions. [2023-12-02 15:07:19,423 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 370 transitions. Word has length 69 [2023-12-02 15:07:19,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:07:19,424 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 370 transitions. [2023-12-02 15:07:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:07:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 370 transitions. [2023-12-02 15:07:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 15:07:19,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:07:19,426 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2023-12-02 15:07:19,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 15:07:19,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 15:07:19,633 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:07:19,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:07:19,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1026457831, now seen corresponding path program 1 times [2023-12-02 15:07:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:07:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755286710] [2023-12-02 15:07:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:07:19,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:07:19,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:07:19,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143361913] [2023-12-02 15:07:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:07:19,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:07:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:07:19,647 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:07:19,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:07:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:07:19,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:07:19,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:07:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 15:07:19,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:07:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-02 15:07:19,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:07:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755286710] [2023-12-02 15:07:19,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:07:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143361913] [2023-12-02 15:07:19,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143361913] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:07:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116714159] [2023-12-02 15:07:19,914 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:07:19,914 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:07:19,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:07:19,914 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:07:19,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:07:27,880 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-12-02 15:07:27,882 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:07:27,883 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:07:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1116714159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:07:45,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:07:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [13, 14] total 37 [2023-12-02 15:07:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755786535] [2023-12-02 15:07:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:07:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-02 15:07:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:07:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-02 15:07:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1150, Unknown=1, NotChecked=0, Total=1332 [2023-12-02 15:07:45,612 INFO L87 Difference]: Start difference. First operand 324 states and 370 transitions. Second operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:08:01,279 WARN L293 SmtUtils]: Spent 11.89s on a formula simplification. DAG size of input: 82 DAG size of output: 78 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:08:15,209 WARN L293 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 85 DAG size of output: 80 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:08:26,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:08:29,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:08:31,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:08:33,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:08:35,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:08:37,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:08:39,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:08:42,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:08:44,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:08:54,868 WARN L293 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 105 DAG size of output: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:09:14,837 WARN L293 SmtUtils]: Spent 14.16s on a formula simplification. DAG size of input: 108 DAG size of output: 102 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:09:18,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:09:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:19,646 INFO L93 Difference]: Finished difference Result 428 states and 491 transitions. [2023-12-02 15:09:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 15:09:19,647 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 73 [2023-12-02 15:09:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:19,649 INFO L225 Difference]: With dead ends: 428 [2023-12-02 15:09:19,650 INFO L226 Difference]: Without dead ends: 427 [2023-12-02 15:09:19,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 163 SyntacticMatches, 19 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 80.8s TimeCoverageRelationStatistics Valid=310, Invalid=1942, Unknown=4, NotChecked=0, Total=2256 [2023-12-02 15:09:19,651 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 14 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:19,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 102 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 560 Invalid, 7 Unknown, 0 Unchecked, 30.9s Time] [2023-12-02 15:09:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-02 15:09:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 424. [2023-12-02 15:09:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 322 states have (on average 1.186335403726708) internal successors, (382), 324 states have internal predecessors, (382), 51 states have call successors, (51), 48 states have call predecessors, (51), 48 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-02 15:09:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 484 transitions. [2023-12-02 15:09:19,702 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 484 transitions. Word has length 73 [2023-12-02 15:09:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:19,703 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 484 transitions. [2023-12-02 15:09:19,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:09:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 484 transitions. [2023-12-02 15:09:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 15:09:19,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:19,704 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 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] [2023-12-02 15:09:19,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:09:19,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 15:09:19,905 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:09:19,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1220585778, now seen corresponding path program 1 times [2023-12-02 15:09:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:19,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479086548] [2023-12-02 15:09:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:19,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:19,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:09:19,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850784237] [2023-12-02 15:09:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:19,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:09:19,914 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:09:19,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:09:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:19,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:09:19,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:09:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 15:09:20,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:09:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 15:09:20,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479086548] [2023-12-02 15:09:20,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:09:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850784237] [2023-12-02 15:09:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850784237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:09:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070961717] [2023-12-02 15:09:20,186 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:09:20,186 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:09:20,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:09:20,186 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:09:20,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:09:23,907 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:09:23,908 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:09:23,909 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:09:47,312 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21666#(and (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= 0 (+ ~counter~0 2147483649)))' at error location [2023-12-02 15:09:47,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:09:47,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:09:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 14 [2023-12-02 15:09:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718632657] [2023-12-02 15:09:47,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:09:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:09:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:09:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:09:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1267, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 15:09:47,313 INFO L87 Difference]: Start difference. First operand 424 states and 484 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-02 15:09:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:49,566 INFO L93 Difference]: Finished difference Result 625 states and 706 transitions. [2023-12-02 15:09:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 15:09:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 73 [2023-12-02 15:09:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:49,568 INFO L225 Difference]: With dead ends: 625 [2023-12-02 15:09:49,568 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 15:09:49,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 170 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=307, Invalid=2663, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 15:09:49,569 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 77 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:49,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 167 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:09:49,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 15:09:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 372. [2023-12-02 15:09:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 284 states have (on average 1.1725352112676057) internal successors, (333), 286 states have internal predecessors, (333), 44 states have call successors, (44), 41 states have call predecessors, (44), 41 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-02 15:09:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 421 transitions. [2023-12-02 15:09:49,633 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 421 transitions. Word has length 73 [2023-12-02 15:09:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:49,633 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 421 transitions. [2023-12-02 15:09:49,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 7 states have call successors, (20), 8 states have call predecessors, (20), 8 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-12-02 15:09:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 421 transitions. [2023-12-02 15:09:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 15:09:49,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:49,634 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 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] [2023-12-02 15:09:49,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:09:49,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 15:09:49,835 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:09:49,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:49,835 INFO L85 PathProgramCache]: Analyzing trace with hash -303261390, now seen corresponding path program 2 times [2023-12-02 15:09:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512869049] [2023-12-02 15:09:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:49,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:49,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:09:49,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080405873] [2023-12-02 15:09:49,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:09:49,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:49,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:09:49,843 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:09:49,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 15:09:49,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:09:49,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:09:49,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:09:49,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:09:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 15:09:49,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:09:49,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512869049] [2023-12-02 15:09:49,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:09:49,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080405873] [2023-12-02 15:09:49,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080405873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:09:49,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:09:49,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 15:09:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335467780] [2023-12-02 15:09:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:09:49,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:09:49,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:09:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:09:49,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:09:49,931 INFO L87 Difference]: Start difference. First operand 372 states and 421 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:09:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:09:50,430 INFO L93 Difference]: Finished difference Result 428 states and 482 transitions. [2023-12-02 15:09:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 15:09:50,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-12-02 15:09:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:09:50,432 INFO L225 Difference]: With dead ends: 428 [2023-12-02 15:09:50,432 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 15:09:50,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-02 15:09:50,434 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:09:50,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 124 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:09:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 15:09:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 186. [2023-12-02 15:09:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 138 states have (on average 1.1159420289855073) internal successors, (154), 140 states have internal predecessors, (154), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 15:09:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 202 transitions. [2023-12-02 15:09:50,459 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 202 transitions. Word has length 73 [2023-12-02 15:09:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:09:50,460 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 202 transitions. [2023-12-02 15:09:50,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:09:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 202 transitions. [2023-12-02 15:09:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 15:09:50,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:09:50,461 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:09:50,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 15:09:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:50,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:09:50,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:09:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -281857290, now seen corresponding path program 1 times [2023-12-02 15:09:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:09:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815366366] [2023-12-02 15:09:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:09:50,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:09:50,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499186860] [2023-12-02 15:09:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:09:50,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:09:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:09:50,672 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:09:50,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:09:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:09:50,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:09:50,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:09:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 15:09:50,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:09:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 125 proven. 4 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-02 15:09:50,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:09:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815366366] [2023-12-02 15:09:50,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:09:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499186860] [2023-12-02 15:09:50,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499186860] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:09:50,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [806246866] [2023-12-02 15:09:50,976 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 15:09:50,976 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:09:50,977 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:09:50,977 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:09:50,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:09:54,891 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2023-12-02 15:09:54,892 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 7 for LOIs [2023-12-02 15:09:54,894 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:10:12,408 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24724#(and (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= 1 ~counter~0))' at error location [2023-12-02 15:10:12,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:10:12,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:10:12,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 14 [2023-12-02 15:10:12,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548204154] [2023-12-02 15:10:12,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:10:12,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:10:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:10:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:10:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:10:12,410 INFO L87 Difference]: Start difference. First operand 186 states and 202 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 7 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-02 15:10:12,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:10:12,986 INFO L93 Difference]: Finished difference Result 224 states and 242 transitions. [2023-12-02 15:10:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 15:10:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 7 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 93 [2023-12-02 15:10:12,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:10:12,987 INFO L225 Difference]: With dead ends: 224 [2023-12-02 15:10:12,987 INFO L226 Difference]: Without dead ends: 138 [2023-12-02 15:10:12,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 228 SyntacticMatches, 14 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=328, Invalid=1928, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 15:10:12,988 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:10:12,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 218 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:10:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-02 15:10:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-12-02 15:10:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 102 states have (on average 1.088235294117647) internal successors, (111), 104 states have internal predecessors, (111), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:10:13,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2023-12-02 15:10:13,002 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 93 [2023-12-02 15:10:13,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:10:13,003 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2023-12-02 15:10:13,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 7 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-12-02 15:10:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2023-12-02 15:10:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 15:10:13,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:10:13,004 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 7, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:10:13,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:10:13,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:10:13,205 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:10:13,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:10:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1297408262, now seen corresponding path program 2 times [2023-12-02 15:10:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:10:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342484260] [2023-12-02 15:10:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:10:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:10:13,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:10:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718259546] [2023-12-02 15:10:13,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:10:13,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:10:13,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:10:13,216 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:10:13,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:10:13,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:10:13,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:10:13,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:10:13,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:10:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-02 15:10:13,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:10:13,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:10:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342484260] [2023-12-02 15:10:13,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:10:13,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718259546] [2023-12-02 15:10:13,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718259546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:10:13,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:10:13,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:10:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026876182] [2023-12-02 15:10:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:10:13,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:10:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:10:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:10:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:10:13,294 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:10:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:10:13,587 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2023-12-02 15:10:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:10:13,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2023-12-02 15:10:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:10:13,589 INFO L225 Difference]: With dead ends: 142 [2023-12-02 15:10:13,589 INFO L226 Difference]: Without dead ends: 141 [2023-12-02 15:10:13,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:10:13,589 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:10:13,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 85 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:10:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-02 15:10:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2023-12-02 15:10:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 103 states have internal predecessors, (110), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 15:10:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 146 transitions. [2023-12-02 15:10:13,605 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 146 transitions. Word has length 105 [2023-12-02 15:10:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:10:13,605 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 146 transitions. [2023-12-02 15:10:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 15:10:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 146 transitions. [2023-12-02 15:10:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 15:10:13,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:10:13,606 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:10:13,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 15:10:13,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:10:13,806 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-12-02 15:10:13,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:10:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash 433042859, now seen corresponding path program 1 times [2023-12-02 15:10:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:10:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174987574] [2023-12-02 15:10:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:10:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:10:13,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:10:13,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561896996] [2023-12-02 15:10:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:10:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:10:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:10:13,818 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:10:13,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 15:10:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:10:13,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:10:13,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:10:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-02 15:10:13,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:10:13,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:10:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174987574] [2023-12-02 15:10:13,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:10:13,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561896996] [2023-12-02 15:10:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561896996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:10:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:10:13,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:10:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127026374] [2023-12-02 15:10:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:10:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:10:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:10:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:10:13,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:10:13,919 INFO L87 Difference]: Start difference. First operand 137 states and 146 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:10:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:10:13,952 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2023-12-02 15:10:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:10:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 109 [2023-12-02 15:10:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:10:13,953 INFO L225 Difference]: With dead ends: 137 [2023-12-02 15:10:13,953 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 15:10:13,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:10:13,954 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:10:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 79 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:10:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 15:10:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 15:10:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:10:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 15:10:13,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2023-12-02 15:10:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:10:13,955 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 15:10:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:10:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 15:10:13,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 15:10:13,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-12-02 15:10:13,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-12-02 15:10:13,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-12-02 15:10:13,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-12-02 15:10:13,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-12-02 15:10:13,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-12-02 15:10:13,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 15:10:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 15:10:14,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 15:10:25,163 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse2 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 .cse1) (= ~counter~0 0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (<= .cse1 65535) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) (= 49 (select .cse0 3)) (= (select .cse2 1) 0))) [2023-12-02 15:10:25,163 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-12-02 15:10:25,163 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-12-02 15:10:25,163 INFO L899 garLoopResultBuilder]: For program point L52-1(line 52) no Hoare annotation was computed. [2023-12-02 15:10:25,163 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 52 58) no Hoare annotation was computed. [2023-12-02 15:10:25,163 INFO L895 garLoopResultBuilder]: At program point L52-4(lines 52 58) the Hoare annotation is: (or (and (<= 2 ~counter~0) (<= ~counter~0 5) (<= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296))) (and (or (= 2147483645 ~counter~0) (< ~counter~0 2147483645)) (<= 5 ~counter~0)) (and (or (= ~counter~0 3) (< 3 ~counter~0)) (<= ~counter~0 7))) [2023-12-02 15:10:25,163 INFO L895 garLoopResultBuilder]: At program point L52-5(lines 39 59) the Hoare annotation is: (or (let ((.cse1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse2 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (.cse0 (select |#memory_int| 2)) (.cse3 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= .cse1 65535) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~u~0#1|) (= (select .cse0 5) 99) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 .cse2) (= ~counter~0 0) (<= 1 .cse1) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (<= .cse2 65535) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= |ULTIMATE.start_main_~v~0#1| 0) (= (select |#valid| 2) 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse3 0) 48) (= 49 (select .cse0 3)) (= (select .cse3 1) 0))) (and (<= ~counter~0 5) (<= 4 ~counter~0)) (and (<= 2 ~counter~0) (<= ~counter~0 6) (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (and (<= 6 ~counter~0) (<= ~counter~0 2147483646))) [2023-12-02 15:10:25,163 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L899 garLoopResultBuilder]: For program point L44-2(line 44) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L899 garLoopResultBuilder]: For program point L44-3(lines 44 50) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (or (= ~counter~0 5) (and (<= 1 ~counter~0) (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (and (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) (<= 1 |#StackHeapBarrier|) (= ~counter~0 1))) [2023-12-02 15:10:25,164 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 39 59) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L895 garLoopResultBuilder]: At program point L44-5(lines 44 50) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|))) (or (and .cse0 (= ~counter~0 2)) (= ~counter~0 5) (and (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) .cse0 (not (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (= ~counter~0 1)) (and .cse0 (= ~counter~0 4)) (and (= ~counter~0 3) .cse0))) [2023-12-02 15:10:25,164 INFO L899 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 52) no Hoare annotation was computed. [2023-12-02 15:10:25,164 INFO L902 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2023-12-02 15:10:25,165 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= 49 (select .cse0 3)) (= (select .cse1 1) 0))) [2023-12-02 15:10:25,165 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= 49 (select .cse0 3)) (= (select .cse1 1) 0))) [2023-12-02 15:10:25,165 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (<= ~counter~0 5))) (or (and .cse0 (<= 4 ~counter~0)) (and .cse0 (<= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296)) (<= 3 ~counter~0)))) [2023-12-02 15:10:25,165 INFO L899 garLoopResultBuilder]: For program point L53-1(lines 52 58) no Hoare annotation was computed. [2023-12-02 15:10:25,165 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|))) (or (and (= (mod (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod (+ (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~x~0#1|)) 4294967296)) .cse0 (not (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (= ~counter~0 2)) (and .cse0 (= ~counter~0 5)) (and .cse0 (= ~counter~0 4)) (and (= ~counter~0 3) .cse0))) [2023-12-02 15:10:25,165 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 44 50) no Hoare annotation was computed. [2023-12-02 15:10:25,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2023-12-02 15:10:25,165 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 2)) (.cse1 (select |#memory_int| 1))) (and (= (select .cse0 0) 108) (= 7 (select |#length| 2)) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= (select .cse0 5) 99) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 1) 99) (= (select .cse0 4) 46) (<= 1 (mod |ULTIMATE.start_main_~a~0#1| 4294967296)) (= ~counter~0 0) (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= (select |#valid| 1) 1) (= (select .cse0 6) 0) (= 109 (select .cse0 2)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse1 0) 48) (= 49 (select .cse0 3)) (= (select .cse1 1) 0))) [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 52) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point L39-2(line 39) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L899 garLoopResultBuilder]: For program point L39-3(lines 39 59) no Hoare annotation was computed. [2023-12-02 15:10:25,166 INFO L902 garLoopResultBuilder]: At program point L39-5(lines 39 59) the Hoare annotation is: true [2023-12-02 15:10:25,166 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-12-02 15:10:25,167 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-12-02 15:10:25,167 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-12-02 15:10:25,167 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-12-02 15:10:25,169 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:10:25,171 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:10:25,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][0] could not be translated [2023-12-02 15:10:25,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 15:10:25,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 15:10:25,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][5] could not be translated [2023-12-02 15:10:25,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 15:10:25,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 15:10:25,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][1] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][4] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][6] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][2] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][3] could not be translated [2023-12-02 15:10:25,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 15:10:25,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:10:25 BoogieIcfgContainer [2023-12-02 15:10:25,187 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:10:25,188 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:10:25,188 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:10:25,188 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:10:25,188 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:00:33" (3/4) ... [2023-12-02 15:10:25,190 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 15:10:25,193 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-12-02 15:10:25,193 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-12-02 15:10:25,197 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-12-02 15:10:25,197 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 15:10:25,197 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 15:10:25,197 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:10:25,198 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 15:10:25,272 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 15:10:25,272 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 15:10:25,272 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:10:25,273 INFO L158 Benchmark]: Toolchain (without parser) took 592865.81ms. Allocated memory was 142.6MB in the beginning and 434.1MB in the end (delta: 291.5MB). Free memory was 101.6MB in the beginning and 369.2MB in the end (delta: -267.6MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-12-02 15:10:25,273 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:10:25,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.36ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 90.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:10:25,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.79ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 89.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:10:25,274 INFO L158 Benchmark]: Boogie Preprocessor took 23.38ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 87.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:10:25,274 INFO L158 Benchmark]: RCFGBuilder took 369.95ms. Allocated memory is still 142.6MB. Free memory was 87.9MB in the beginning and 73.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 15:10:25,275 INFO L158 Benchmark]: TraceAbstraction took 592079.40ms. Allocated memory was 142.6MB in the beginning and 434.1MB in the end (delta: 291.5MB). Free memory was 73.2MB in the beginning and 374.4MB in the end (delta: -301.2MB). Peak memory consumption was 235.1MB. Max. memory is 16.1GB. [2023-12-02 15:10:25,275 INFO L158 Benchmark]: Witness Printer took 84.61ms. Allocated memory is still 434.1MB. Free memory was 374.4MB in the beginning and 369.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 15:10:25,277 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.36ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 90.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.79ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 89.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.38ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 87.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.95ms. Allocated memory is still 142.6MB. Free memory was 87.9MB in the beginning and 73.6MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 592079.40ms. Allocated memory was 142.6MB in the beginning and 434.1MB in the end (delta: 291.5MB). Free memory was 73.2MB in the beginning and 374.4MB in the end (delta: -301.2MB). Peak memory consumption was 235.1MB. Max. memory is 16.1GB. * Witness Printer took 84.61ms. Allocated memory is still 434.1MB. Free memory was 374.4MB in the beginning and 369.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][5] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][6] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[2][3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 592.0s, OverallIterations: 27, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 158.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 1301 SdHoareTripleChecker+Valid, 71.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1294 mSDsluCounter, 4382 SdHoareTripleChecker+Invalid, 70.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3599 mSDsCounter, 153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5218 IncrementalHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 153 mSolverCounterUnsat, 783 mSDtfsCounter, 5218 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3466 GetRequests, 2475 SyntacticMatches, 112 SemanticMatches, 879 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 17448 ImplicationChecksByTransitivity, 450.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=18, InterpolantAutomatonStates: 493, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 27 MinimizatonAttempts, 705 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 185 PreInvPairs, 261 NumberOfFragments, 823 HoareAnnotationTreeSize, 185 FomulaSimplifications, 334417 FormulaSimplificationTreeSizeReduction, 3.5s HoareSimplificationTime, 14 FomulaSimplificationsInter, 6457 FormulaSimplificationTreeSizeReductionInter, 7.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1520 NumberOfCodeBlocks, 1342 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2377 ConstructedInterpolants, 0 QuantifiedInterpolants, 5339 SizeOfPredicates, 162 NumberOfNonLiveVariables, 4028 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 43 InterpolantComputations, 13 PerfectInterpolantSequences, 2370/2826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 10.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 103, DAG_INTERPRETER_EARLY_EXITS: 6, TOOLS_POST_APPLICATIONS: 169, TOOLS_POST_TIME: 2.1s, TOOLS_POST_CALL_APPLICATIONS: 82, TOOLS_POST_CALL_TIME: 1.2s, TOOLS_POST_RETURN_APPLICATIONS: 68, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 311, TOOLS_QUANTIFIERELIM_TIME: 3.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 376, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 103, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 7, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 16, DOMAIN_ISSUBSETEQ_TIME: 1.9s, DOMAIN_ISBOTTOM_APPLICATIONS: 103, DOMAIN_ISBOTTOM_TIME: 4.2s, LOOP_SUMMARIZER_APPLICATIONS: 9, LOOP_SUMMARIZER_CACHE_MISSES: 9, LOOP_SUMMARIZER_OVERALL_TIME: 6.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 6.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 16, CALL_SUMMARIZER_APPLICATIONS: 68, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 3974, DAG_COMPRESSION_RETAINED_NODES: 280, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((2 <= counter) && (counter <= 5)) && ((x % 4294967296) <= (y % 4294967296))) || (((2147483645 == counter) || (counter < 2147483645)) && (5 <= counter))) || (((counter == 3) || (3 < counter)) && (counter <= 7))) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((((b % 4294967296) <= 65535) && (b == u)) && (b == y)) && (1 <= (a % 4294967296))) && (counter == 0)) && (1 <= (b % 4294967296))) && ((a % 4294967296) <= 65535)) && (v == 0)) && (a == x)) || ((counter <= 5) && (4 <= counter))) || (((2 <= counter) && (counter <= 6)) && ((y % 4294967296) == (x % 4294967296)))) || ((6 <= counter) && (counter <= 2147483646))) - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((counter == 2) || (counter == 5)) || (((((a * b) % 4294967296) == (((v * y) + (u * x)) % 4294967296)) && !(((y % 4294967296) == (x % 4294967296)))) && (counter == 1))) || (counter == 4)) || (counter == 3)) RESULT: Ultimate proved your program to be correct! [2023-12-02 15:10:25,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0010c158-b06f-4bf9-8830-ab0252de16ad/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE