./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --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 64bit --witnessprinter.graph.data.programhash 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:44:33,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:44:33,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:44:33,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:44:33,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:44:33,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:44:33,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:44:33,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:44:33,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:44:33,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:44:33,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:44:33,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:44:33,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:44:33,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:44:33,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:44:33,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:44:33,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:44:33,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:44:33,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:44:33,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:44:33,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:44:33,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:44:33,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:44:33,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:44:33,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:44:33,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:44:33,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:44:33,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:44:33,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:44:33,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:44:33,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:44:33,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:44:33,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:44:33,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:44:33,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:44:33,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:44:33,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:44:33,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:44:33,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:44:33,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:44:33,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:44:33,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 01:44:33,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:44:33,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:44:33,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:44:33,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:44:33,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:44:33,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:44:33,248 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:44:33,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:44:33,248 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:44:33,249 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:44:33,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:44:33,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:44:33,249 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:44:33,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:44:33,250 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:44:33,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:44:33,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:44:33,250 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:44:33,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:44:33,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:44:33,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:44:33,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:44:33,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:44:33,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:44:33,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:44:33,253 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:44:33,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:44:33,253 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:44:33,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:44:33,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:44:33,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:44:33,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:44:33,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:44:33,254 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:44:33,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:44:33,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:44:33,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:44:33,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:44:33,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:44:33,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:44:33,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-11-22 01:44:33,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:44:33,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:44:33,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:44:33,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:44:33,613 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:44:33,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-11-22 01:44:36,860 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:44:37,103 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:44:37,103 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/sv-benchmarks/c/termination-numeric/twisted.c [2022-11-22 01:44:37,109 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/data/8cfee7ea2/d2814492b26745e98814cc039cd455c3/FLAG3f301c46b [2022-11-22 01:44:37,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/data/8cfee7ea2/d2814492b26745e98814cc039cd455c3 [2022-11-22 01:44:37,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:44:37,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:44:37,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:44:37,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:44:37,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:44:37,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306951c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37, skipping insertion in model container [2022-11-22 01:44:37,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:44:37,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:44:37,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:44:37,336 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:44:37,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:44:37,363 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:44:37,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37 WrapperNode [2022-11-22 01:44:37,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:44:37,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:44:37,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:44:37,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:44:37,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,396 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-11-22 01:44:37,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:44:37,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:44:37,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:44:37,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:44:37,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:44:37,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:44:37,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:44:37,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:44:37,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (1/1) ... [2022-11-22 01:44:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:44:37,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:37,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:44:37,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:44:37,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:44:37,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:44:37,571 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:44:37,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:44:37,749 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:44:37,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:44:37,775 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:44:37,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:37 BoogieIcfgContainer [2022-11-22 01:44:37,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:44:37,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:44:37,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:44:37,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:44:37,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:44:37" (1/3) ... [2022-11-22 01:44:37,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d78df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:37, skipping insertion in model container [2022-11-22 01:44:37,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:37" (2/3) ... [2022-11-22 01:44:37,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d78df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:37, skipping insertion in model container [2022-11-22 01:44:37,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:37" (3/3) ... [2022-11-22 01:44:37,794 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-11-22 01:44:37,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:44:37,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 01:44:37,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:44:37,883 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=LoopsAndPotentialCycles, 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;@371c1623, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:44:37,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 01:44:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-11-22 01:44:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:44:37,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:37,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:44:37,897 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)] === [2022-11-22 01:44:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2538354, now seen corresponding path program 1 times [2022-11-22 01:44:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:37,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398198948] [2022-11-22 01:44:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:38,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:38,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398198948] [2022-11-22 01:44:38,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398198948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:38,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:38,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:44:38,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522227795] [2022-11-22 01:44:38,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:44:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:44:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:44:38,227 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:38,321 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-11-22 01:44:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:44:38,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:44:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:38,334 INFO L225 Difference]: With dead ends: 56 [2022-11-22 01:44:38,334 INFO L226 Difference]: Without dead ends: 35 [2022-11-22 01:44:38,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:44:38,342 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:38,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-22 01:44:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2022-11-22 01:44:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 26 states have internal predecessors, (35), 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) [2022-11-22 01:44:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-22 01:44:38,416 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 4 [2022-11-22 01:44:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:38,417 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-22 01:44:38,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-22 01:44:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:44:38,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:38,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:44:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:44:38,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 78689019, now seen corresponding path program 1 times [2022-11-22 01:44:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:38,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156359890] [2022-11-22 01:44:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:38,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:38,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156359890] [2022-11-22 01:44:38,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156359890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:38,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:38,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:44:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177218219] [2022-11-22 01:44:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:38,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:44:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:44:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:44:38,540 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:38,606 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2022-11-22 01:44:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:44:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:44:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:38,608 INFO L225 Difference]: With dead ends: 27 [2022-11-22 01:44:38,608 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:44:38,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:44:38,610 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:38,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:38,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:44:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-22 01:44:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.619047619047619) internal successors, (34), 25 states have internal predecessors, (34), 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) [2022-11-22 01:44:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-22 01:44:38,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 5 [2022-11-22 01:44:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:38,623 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-22 01:44:38,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-22 01:44:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:44:38,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:38,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:44:38,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:44:38,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:38,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654287, now seen corresponding path program 1 times [2022-11-22 01:44:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:38,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120516426] [2022-11-22 01:44:38,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:38,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120516426] [2022-11-22 01:44:38,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120516426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:38,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:38,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:44:38,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533592310] [2022-11-22 01:44:38,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:38,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:44:38,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:44:38,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:38,677 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:38,755 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-11-22 01:44:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:44:38,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:44:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:38,757 INFO L225 Difference]: With dead ends: 39 [2022-11-22 01:44:38,757 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:44:38,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:38,759 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:38,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:44:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-11-22 01:44:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 30 states have internal predecessors, (41), 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) [2022-11-22 01:44:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2022-11-22 01:44:38,796 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 6 [2022-11-22 01:44:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:38,797 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2022-11-22 01:44:38,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2022-11-22 01:44:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:44:38,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:38,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:44:38,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:44:38,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:38,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654237, now seen corresponding path program 1 times [2022-11-22 01:44:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:38,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648281554] [2022-11-22 01:44:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:38,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:38,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:38,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648281554] [2022-11-22 01:44:38,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648281554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:38,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:38,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:44:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428810199] [2022-11-22 01:44:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:38,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:44:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:44:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:44:38,892 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:38,972 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-11-22 01:44:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:44:38,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 01:44:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:38,974 INFO L225 Difference]: With dead ends: 49 [2022-11-22 01:44:38,977 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:44:38,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:44:38,979 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:38,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:44:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:44:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2022-11-22 01:44:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.542857142857143) internal successors, (54), 39 states have internal predecessors, (54), 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) [2022-11-22 01:44:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-11-22 01:44:39,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 6 [2022-11-22 01:44:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:39,004 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-11-22 01:44:39,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-11-22 01:44:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:44:39,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:39,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:39,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:44:39,008 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)] === [2022-11-22 01:44:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1690707972, now seen corresponding path program 1 times [2022-11-22 01:44:39,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:39,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487895465] [2022-11-22 01:44:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:39,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:39,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:39,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487895465] [2022-11-22 01:44:39,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487895465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:39,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:39,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:44:39,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704398944] [2022-11-22 01:44:39,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:44:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:39,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:44:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:39,092 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:39,129 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-11-22 01:44:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:44:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:44:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:39,131 INFO L225 Difference]: With dead ends: 45 [2022-11-22 01:44:39,131 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 01:44:39,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:39,133 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:39,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:44:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 01:44:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-11-22 01:44:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 38 states have internal predecessors, (52), 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) [2022-11-22 01:44:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2022-11-22 01:44:39,143 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 7 [2022-11-22 01:44:39,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:39,144 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2022-11-22 01:44:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2022-11-22 01:44:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:44:39,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:39,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:39,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:44:39,146 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)] === [2022-11-22 01:44:39,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1690706434, now seen corresponding path program 1 times [2022-11-22 01:44:39,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:39,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712989963] [2022-11-22 01:44:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:39,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:39,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:39,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712989963] [2022-11-22 01:44:39,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712989963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:39,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:39,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:44:39,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369484870] [2022-11-22 01:44:39,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:39,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:44:39,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:39,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:44:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:44:39,188 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:39,219 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2022-11-22 01:44:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:44:39,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 01:44:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:39,220 INFO L225 Difference]: With dead ends: 39 [2022-11-22 01:44:39,221 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:44:39,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:44:39,222 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:39,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:44:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:44:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-22 01:44:39,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 37 states have internal predecessors, (50), 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) [2022-11-22 01:44:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2022-11-22 01:44:39,233 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 7 [2022-11-22 01:44:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:39,233 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2022-11-22 01:44:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2022-11-22 01:44:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:44:39,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:39,235 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:44:39,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash -827531145, now seen corresponding path program 1 times [2022-11-22 01:44:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:39,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599491497] [2022-11-22 01:44:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:39,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:39,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599491497] [2022-11-22 01:44:39,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599491497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:39,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935990897] [2022-11-22 01:44:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:39,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:39,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:39,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:39,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:44:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:39,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:44:39,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:39,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:39,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935990897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:39,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1769665187] [2022-11-22 01:44:39,535 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-22 01:44:39,535 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:39,539 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:39,545 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:39,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:39,807 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:40,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1769665187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:40,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:40,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2022-11-22 01:44:40,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324785013] [2022-11-22 01:44:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:44:40,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:40,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:44:40,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:44:40,237 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:40,559 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-22 01:44:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:44:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:44:40,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:40,560 INFO L225 Difference]: With dead ends: 46 [2022-11-22 01:44:40,560 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 01:44:40,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:44:40,561 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:40,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:40,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 01:44:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2022-11-22 01:44:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 36 states have internal predecessors, (47), 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) [2022-11-22 01:44:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-11-22 01:44:40,570 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2022-11-22 01:44:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:40,570 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-11-22 01:44:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-11-22 01:44:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:44:40,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:40,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:40,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:40,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 01:44:40,776 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:40,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:40,777 INFO L85 PathProgramCache]: Analyzing trace with hash -753827850, now seen corresponding path program 1 times [2022-11-22 01:44:40,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:40,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755721011] [2022-11-22 01:44:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:40,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:40,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755721011] [2022-11-22 01:44:40,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755721011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16933134] [2022-11-22 01:44:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:40,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:40,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:40,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:44:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:40,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:44:40,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:41,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:41,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16933134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:41,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806588201] [2022-11-22 01:44:41,074 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:44:41,075 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:41,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:41,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:41,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:41,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:41,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1806588201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:41,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:41,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2022-11-22 01:44:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377892500] [2022-11-22 01:44:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:44:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:44:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:44:41,425 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-22 01:44:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:41,507 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2022-11-22 01:44:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:44:41,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 01:44:41,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:41,508 INFO L225 Difference]: With dead ends: 74 [2022-11-22 01:44:41,508 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:44:41,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:44:41,510 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:41,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 34 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:44:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-11-22 01:44:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.358974358974359) internal successors, (53), 42 states have internal predecessors, (53), 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) [2022-11-22 01:44:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-11-22 01:44:41,520 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 10 [2022-11-22 01:44:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:41,521 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-11-22 01:44:41,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-22 01:44:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-11-22 01:44:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:44:41,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:41,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:44:41,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:41,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:41,728 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1133512047, now seen corresponding path program 1 times [2022-11-22 01:44:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288864275] [2022-11-22 01:44:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:41,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:41,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288864275] [2022-11-22 01:44:41,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288864275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:41,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460118451] [2022-11-22 01:44:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:41,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:41,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:41,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:41,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:44:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:41,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:44:41,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:41,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:41,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460118451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:41,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078358524] [2022-11-22 01:44:41,951 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 01:44:41,951 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:41,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:41,952 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:41,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:42,234 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:42,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2078358524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:42,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:42,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 13 [2022-11-22 01:44:42,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027314175] [2022-11-22 01:44:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:44:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:44:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:44:42,667 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:43,203 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2022-11-22 01:44:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:44:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:44:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:43,204 INFO L225 Difference]: With dead ends: 71 [2022-11-22 01:44:43,204 INFO L226 Difference]: Without dead ends: 46 [2022-11-22 01:44:43,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:44:43,205 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:43,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 42 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-22 01:44:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-11-22 01:44:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 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) [2022-11-22 01:44:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-22 01:44:43,223 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 13 [2022-11-22 01:44:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:43,224 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-22 01:44:43,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-22 01:44:43,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:44:43,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:43,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:43,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:43,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:43,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1862452426, now seen corresponding path program 1 times [2022-11-22 01:44:43,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:43,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063205680] [2022-11-22 01:44:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:43,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:43,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063205680] [2022-11-22 01:44:43,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063205680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:43,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205213340] [2022-11-22 01:44:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:43,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:43,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:43,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:43,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:44:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:43,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:44:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:43,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:43,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205213340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:43,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1596003347] [2022-11-22 01:44:43,778 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:44:43,779 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:43,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:43,779 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:43,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:43,817 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:43,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1596003347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:43,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:43,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 19 [2022-11-22 01:44:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700244756] [2022-11-22 01:44:43,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:43,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:44:43,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:44:43,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:44:43,965 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:44,027 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2022-11-22 01:44:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:44:44,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:44:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:44,028 INFO L225 Difference]: With dead ends: 72 [2022-11-22 01:44:44,029 INFO L226 Difference]: Without dead ends: 53 [2022-11-22 01:44:44,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:44:44,030 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:44,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:44:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-22 01:44:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-11-22 01:44:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 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) [2022-11-22 01:44:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-22 01:44:44,042 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 13 [2022-11-22 01:44:44,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:44,043 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-22 01:44:44,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-22 01:44:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:44:44,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:44,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:44,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:44,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:44:44,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1948716347, now seen corresponding path program 1 times [2022-11-22 01:44:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:44,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734207623] [2022-11-22 01:44:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:44,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:44,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:44,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734207623] [2022-11-22 01:44:44,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734207623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:44,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727703160] [2022-11-22 01:44:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:44,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:44,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:44,337 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:44,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:44:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:44,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:44:44,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:44,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:44,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727703160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:44,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2000682878] [2022-11-22 01:44:44,576 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:44:44,576 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:44,576 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:44,577 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:44,577 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:44,791 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:45,923 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1701#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-22 01:44:45,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:45,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:45,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-22 01:44:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464966045] [2022-11-22 01:44:45,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 01:44:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 01:44:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:44:45,926 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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) [2022-11-22 01:44:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:46,400 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2022-11-22 01:44:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:44:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 01:44:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:46,402 INFO L225 Difference]: With dead ends: 136 [2022-11-22 01:44:46,402 INFO L226 Difference]: Without dead ends: 133 [2022-11-22 01:44:46,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=344, Invalid=1462, Unknown=0, NotChecked=0, Total=1806 [2022-11-22 01:44:46,404 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 102 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:46,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 46 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:44:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-22 01:44:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2022-11-22 01:44:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.3043478260869565) internal successors, (120), 95 states have internal predecessors, (120), 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) [2022-11-22 01:44:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2022-11-22 01:44:46,444 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 14 [2022-11-22 01:44:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:46,444 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2022-11-22 01:44:46,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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) [2022-11-22 01:44:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2022-11-22 01:44:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:44:46,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:46,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:46,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:46,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:46,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1948716397, now seen corresponding path program 1 times [2022-11-22 01:44:46,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:46,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522985462] [2022-11-22 01:44:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:46,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:46,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:46,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522985462] [2022-11-22 01:44:46,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522985462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:46,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435157681] [2022-11-22 01:44:46,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:46,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:46,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:46,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:46,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:44:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:44:46,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:46,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:46,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435157681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:46,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550255897] [2022-11-22 01:44:46,820 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:44:46,820 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:46,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:46,820 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:46,821 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:47,043 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:47,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [550255897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:47,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:47,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 17 [2022-11-22 01:44:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354640256] [2022-11-22 01:44:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:47,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:44:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:44:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:44:47,913 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:49,258 INFO L93 Difference]: Finished difference Result 164 states and 208 transitions. [2022-11-22 01:44:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:44:49,259 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-22 01:44:49,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:49,259 INFO L225 Difference]: With dead ends: 164 [2022-11-22 01:44:49,259 INFO L226 Difference]: Without dead ends: 139 [2022-11-22 01:44:49,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:44:49,261 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:49,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:44:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-22 01:44:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2022-11-22 01:44:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 123 states have (on average 1.2845528455284554) internal successors, (158), 126 states have internal predecessors, (158), 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) [2022-11-22 01:44:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2022-11-22 01:44:49,290 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 14 [2022-11-22 01:44:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:49,290 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2022-11-22 01:44:49,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2022-11-22 01:44:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:44:49,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:49,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:49,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:49,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 01:44:49,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash 280701081, now seen corresponding path program 1 times [2022-11-22 01:44:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:49,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928328537] [2022-11-22 01:44:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:49,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:49,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:49,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928328537] [2022-11-22 01:44:49,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928328537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:49,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:44:49,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:44:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342869093] [2022-11-22 01:44:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:44:49,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:44:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:49,534 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:49,583 INFO L93 Difference]: Finished difference Result 164 states and 204 transitions. [2022-11-22 01:44:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:44:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:44:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:49,585 INFO L225 Difference]: With dead ends: 164 [2022-11-22 01:44:49,585 INFO L226 Difference]: Without dead ends: 134 [2022-11-22 01:44:49,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:44:49,586 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:44:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-22 01:44:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2022-11-22 01:44:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 127 states have internal predecessors, (154), 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) [2022-11-22 01:44:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2022-11-22 01:44:49,624 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 15 [2022-11-22 01:44:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:49,625 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2022-11-22 01:44:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2022-11-22 01:44:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:44:49,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:49,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:44:49,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:49,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -829245942, now seen corresponding path program 1 times [2022-11-22 01:44:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:49,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571863601] [2022-11-22 01:44:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:49,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571863601] [2022-11-22 01:44:49,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571863601] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858488024] [2022-11-22 01:44:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:49,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:49,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:49,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:49,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:44:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:49,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:44:49,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:49,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:44:49,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858488024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [881698658] [2022-11-22 01:44:49,800 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:44:49,800 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:49,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:49,801 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:49,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:50,464 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:51,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3166#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#t~post1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:44:51,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:51,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:51,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-22 01:44:51,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687928363] [2022-11-22 01:44:51,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:51,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:44:51,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:44:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:44:51,288 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2022-11-22 01:44:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:51,431 INFO L93 Difference]: Finished difference Result 243 states and 301 transitions. [2022-11-22 01:44:51,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:44:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 01:44:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:51,433 INFO L225 Difference]: With dead ends: 243 [2022-11-22 01:44:51,433 INFO L226 Difference]: Without dead ends: 242 [2022-11-22 01:44:51,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:44:51,434 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:51,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 70 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:44:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-22 01:44:51,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 202. [2022-11-22 01:44:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.2777777777777777) internal successors, (253), 201 states have internal predecessors, (253), 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) [2022-11-22 01:44:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 253 transitions. [2022-11-22 01:44:51,469 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 253 transitions. Word has length 17 [2022-11-22 01:44:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:51,469 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 253 transitions. [2022-11-22 01:44:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2022-11-22 01:44:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 253 transitions. [2022-11-22 01:44:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:44:51,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:51,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:51,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:51,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 01:44:51,677 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)] === [2022-11-22 01:44:51,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:51,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1677561500, now seen corresponding path program 1 times [2022-11-22 01:44:51,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638366289] [2022-11-22 01:44:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:51,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:51,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:51,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638366289] [2022-11-22 01:44:51,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638366289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:51,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7973005] [2022-11-22 01:44:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:51,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:51,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:51,811 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:51,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:44:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:51,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 01:44:51,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:52,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:44:52,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7973005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:52,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:44:52,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2022-11-22 01:44:52,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253281648] [2022-11-22 01:44:52,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:52,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:44:52,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:44:52,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:44:52,012 INFO L87 Difference]: Start difference. First operand 202 states and 253 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:52,243 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2022-11-22 01:44:52,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:44:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 01:44:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:52,245 INFO L225 Difference]: With dead ends: 218 [2022-11-22 01:44:52,245 INFO L226 Difference]: Without dead ends: 215 [2022-11-22 01:44:52,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-11-22 01:44:52,246 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:52,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 55 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:44:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-22 01:44:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2022-11-22 01:44:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 197 states have internal predecessors, (247), 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) [2022-11-22 01:44:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 247 transitions. [2022-11-22 01:44:52,290 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 247 transitions. Word has length 18 [2022-11-22 01:44:52,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:52,291 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 247 transitions. [2022-11-22 01:44:52,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 247 transitions. [2022-11-22 01:44:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:44:52,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:52,292 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:52,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:52,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:52,497 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1677597891, now seen corresponding path program 1 times [2022-11-22 01:44:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:52,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708297047] [2022-11-22 01:44:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:52,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:52,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708297047] [2022-11-22 01:44:52,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708297047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:52,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551835215] [2022-11-22 01:44:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:52,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:52,577 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:52,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:44:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:52,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:44:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:52,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:52,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551835215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34515320] [2022-11-22 01:44:52,723 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:44:52,724 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:52,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:52,724 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:52,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:52,966 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:53,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [34515320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:53,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:53,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6, 6] total 19 [2022-11-22 01:44:53,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278596928] [2022-11-22 01:44:53,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:53,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:44:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:44:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:44:53,726 INFO L87 Difference]: Start difference. First operand 198 states and 247 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:54,396 INFO L93 Difference]: Finished difference Result 304 states and 390 transitions. [2022-11-22 01:44:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:44:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 01:44:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:54,399 INFO L225 Difference]: With dead ends: 304 [2022-11-22 01:44:54,399 INFO L226 Difference]: Without dead ends: 250 [2022-11-22 01:44:54,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:44:54,401 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:54,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:44:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-22 01:44:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 195. [2022-11-22 01:44:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 193 states have (on average 1.233160621761658) internal successors, (238), 194 states have internal predecessors, (238), 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) [2022-11-22 01:44:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 238 transitions. [2022-11-22 01:44:54,437 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 238 transitions. Word has length 18 [2022-11-22 01:44:54,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:54,437 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 238 transitions. [2022-11-22 01:44:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:44:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 238 transitions. [2022-11-22 01:44:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:44:54,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:54,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:54,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:54,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -789615675, now seen corresponding path program 2 times [2022-11-22 01:44:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90584769] [2022-11-22 01:44:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:54,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:54,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90584769] [2022-11-22 01:44:54,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90584769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:54,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322072510] [2022-11-22 01:44:54,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:44:54,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:54,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:54,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:44:54,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 01:44:54,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:44:54,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:44:54,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:55,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:55,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322072510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:55,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491932939] [2022-11-22 01:44:55,165 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:44:55,165 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:55,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:55,166 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:55,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:55,317 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:56,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5590#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-22 01:44:56,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:56,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:56,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-22 01:44:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004573473] [2022-11-22 01:44:56,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:56,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 01:44:56,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 01:44:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:44:56,321 INFO L87 Difference]: Start difference. First operand 195 states and 238 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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) [2022-11-22 01:44:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:56,908 INFO L93 Difference]: Finished difference Result 316 states and 379 transitions. [2022-11-22 01:44:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-22 01:44:56,908 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 01:44:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:56,912 INFO L225 Difference]: With dead ends: 316 [2022-11-22 01:44:56,912 INFO L226 Difference]: Without dead ends: 310 [2022-11-22 01:44:56,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=651, Invalid=2541, Unknown=0, NotChecked=0, Total=3192 [2022-11-22 01:44:56,915 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 172 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:56,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 73 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:44:56,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-11-22 01:44:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 281. [2022-11-22 01:44:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 279 states have (on average 1.1935483870967742) internal successors, (333), 280 states have internal predecessors, (333), 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) [2022-11-22 01:44:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 333 transitions. [2022-11-22 01:44:56,977 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 333 transitions. Word has length 22 [2022-11-22 01:44:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:56,977 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 333 transitions. [2022-11-22 01:44:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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) [2022-11-22 01:44:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 333 transitions. [2022-11-22 01:44:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:44:56,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:56,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:56,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:57,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 01:44:57,184 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1390090171, now seen corresponding path program 3 times [2022-11-22 01:44:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:57,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046244600] [2022-11-22 01:44:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:57,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:57,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046244600] [2022-11-22 01:44:57,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046244600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:57,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323923591] [2022-11-22 01:44:57,311 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:44:57,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:57,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:57,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:57,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:44:57,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:44:57,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:44:57,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:44:57,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:57,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:44:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:44:57,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323923591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:44:57,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576081754] [2022-11-22 01:44:57,696 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:44:57,696 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:44:57,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:44:57,697 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:44:57,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:44:57,850 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:44:58,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6685#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-22 01:44:58,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:44:58,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:44:58,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-22 01:44:58,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431397100] [2022-11-22 01:44:58,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:44:58,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 01:44:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 01:44:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:44:58,940 INFO L87 Difference]: Start difference. First operand 281 states and 333 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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) [2022-11-22 01:44:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:59,526 INFO L93 Difference]: Finished difference Result 405 states and 477 transitions. [2022-11-22 01:44:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 01:44:59,526 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 01:44:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:59,528 INFO L225 Difference]: With dead ends: 405 [2022-11-22 01:44:59,528 INFO L226 Difference]: Without dead ends: 397 [2022-11-22 01:44:59,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=624, Invalid=2682, Unknown=0, NotChecked=0, Total=3306 [2022-11-22 01:44:59,530 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 181 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 57 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:44:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-22 01:44:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 275. [2022-11-22 01:44:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 273 states have (on average 1.1941391941391941) internal successors, (326), 274 states have internal predecessors, (326), 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) [2022-11-22 01:44:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 326 transitions. [2022-11-22 01:44:59,596 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 326 transitions. Word has length 22 [2022-11-22 01:44:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:59,596 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 326 transitions. [2022-11-22 01:44:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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) [2022-11-22 01:44:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 326 transitions. [2022-11-22 01:44:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:44:59,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:59,598 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:59,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:59,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 01:44:59,803 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:44:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash -685928817, now seen corresponding path program 4 times [2022-11-22 01:44:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:59,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411554043] [2022-11-22 01:44:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:00,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411554043] [2022-11-22 01:45:00,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411554043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:00,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841808978] [2022-11-22 01:45:00,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:45:00,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:00,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:00,019 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:00,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:45:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:00,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:45:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:00,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:00,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841808978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [988665775] [2022-11-22 01:45:00,673 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:00,673 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:00,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:00,674 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:00,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:00,865 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:01,959 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7963#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-22 01:45:01,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:01,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:01,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-22 01:45:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008725486] [2022-11-22 01:45:01,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:01,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-22 01:45:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-22 01:45:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=2178, Unknown=0, NotChecked=0, Total=2652 [2022-11-22 01:45:01,962 INFO L87 Difference]: Start difference. First operand 275 states and 326 transitions. Second operand has 41 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 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) [2022-11-22 01:45:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:02,893 INFO L93 Difference]: Finished difference Result 494 states and 577 transitions. [2022-11-22 01:45:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-22 01:45:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-22 01:45:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:02,895 INFO L225 Difference]: With dead ends: 494 [2022-11-22 01:45:02,895 INFO L226 Difference]: Without dead ends: 486 [2022-11-22 01:45:02,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1293, Invalid=5027, Unknown=0, NotChecked=0, Total=6320 [2022-11-22 01:45:02,898 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 406 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:02,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 72 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:45:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-22 01:45:02,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 327. [2022-11-22 01:45:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.1815384615384616) internal successors, (384), 326 states have internal predecessors, (384), 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) [2022-11-22 01:45:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 384 transitions. [2022-11-22 01:45:02,968 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 384 transitions. Word has length 30 [2022-11-22 01:45:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:02,968 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 384 transitions. [2022-11-22 01:45:02,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 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) [2022-11-22 01:45:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 384 transitions. [2022-11-22 01:45:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 01:45:02,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:02,970 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-22 01:45:02,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:03,175 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1482474188, now seen corresponding path program 1 times [2022-11-22 01:45:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:03,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761330473] [2022-11-22 01:45:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:03,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:03,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761330473] [2022-11-22 01:45:03,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761330473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397494881] [2022-11-22 01:45:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:03,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:03,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:03,377 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:03,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 01:45:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:03,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:45:03,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:03,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:03,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397494881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:03,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [91376710] [2022-11-22 01:45:03,994 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:03,994 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:03,995 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:03,995 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:03,995 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:04,423 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:05,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9489#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647) (<= 1 |ULTIMATE.start_f_~i~0#1|))' at error location [2022-11-22 01:45:05,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:05,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:05,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-22 01:45:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153545667] [2022-11-22 01:45:05,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-22 01:45:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-22 01:45:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=2174, Unknown=0, NotChecked=0, Total=2550 [2022-11-22 01:45:05,352 INFO L87 Difference]: Start difference. First operand 327 states and 384 transitions. Second operand has 41 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 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) [2022-11-22 01:45:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:06,411 INFO L93 Difference]: Finished difference Result 580 states and 679 transitions. [2022-11-22 01:45:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-22 01:45:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-22 01:45:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:06,415 INFO L225 Difference]: With dead ends: 580 [2022-11-22 01:45:06,415 INFO L226 Difference]: Without dead ends: 573 [2022-11-22 01:45:06,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1116, Invalid=5204, Unknown=0, NotChecked=0, Total=6320 [2022-11-22 01:45:06,417 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 303 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:06,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 79 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:45:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-22 01:45:06,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 384. [2022-11-22 01:45:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 382 states have (on average 1.1858638743455496) internal successors, (453), 383 states have internal predecessors, (453), 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) [2022-11-22 01:45:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 453 transitions. [2022-11-22 01:45:06,498 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 453 transitions. Word has length 33 [2022-11-22 01:45:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:06,498 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 453 transitions. [2022-11-22 01:45:06,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 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) [2022-11-22 01:45:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 453 transitions. [2022-11-22 01:45:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 01:45:06,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:06,500 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:45:06,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:06,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:06,703 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash 788101896, now seen corresponding path program 1 times [2022-11-22 01:45:06,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:06,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705581937] [2022-11-22 01:45:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:06,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:45:06,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:06,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705581937] [2022-11-22 01:45:06,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705581937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:06,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083286700] [2022-11-22 01:45:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:06,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:06,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:06,865 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:06,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 01:45:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:06,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:45:06,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:45:06,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:45:07,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083286700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:07,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1620997089] [2022-11-22 01:45:07,155 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:45:07,156 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:07,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:07,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:07,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:07,679 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:08,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11239#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#t~post1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:45:08,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:08,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:08,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-11-22 01:45:08,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006114908] [2022-11-22 01:45:08,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:08,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 01:45:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 01:45:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-11-22 01:45:08,447 INFO L87 Difference]: Start difference. First operand 384 states and 453 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 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) [2022-11-22 01:45:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:08,848 INFO L93 Difference]: Finished difference Result 664 states and 776 transitions. [2022-11-22 01:45:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 01:45:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-22 01:45:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:08,851 INFO L225 Difference]: With dead ends: 664 [2022-11-22 01:45:08,852 INFO L226 Difference]: Without dead ends: 663 [2022-11-22 01:45:08,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=336, Invalid=1304, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 01:45:08,853 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 349 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:08,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 164 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:45:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-11-22 01:45:08,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 501. [2022-11-22 01:45:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 499 states have (on average 1.2044088176352705) internal successors, (601), 500 states have internal predecessors, (601), 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) [2022-11-22 01:45:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 601 transitions. [2022-11-22 01:45:08,932 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 601 transitions. Word has length 36 [2022-11-22 01:45:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:08,932 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 601 transitions. [2022-11-22 01:45:08,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 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) [2022-11-22 01:45:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 601 transitions. [2022-11-22 01:45:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-22 01:45:08,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:08,934 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:08,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-22 01:45:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:09,139 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:09,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2106323360, now seen corresponding path program 1 times [2022-11-22 01:45:09,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101540434] [2022-11-22 01:45:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:09,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:09,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101540434] [2022-11-22 01:45:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101540434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686132817] [2022-11-22 01:45:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:09,504 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:09,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 01:45:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:09,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 01:45:09,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:10,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:10,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686132817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:10,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [480989109] [2022-11-22 01:45:10,480 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:10,480 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:10,481 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:10,481 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:10,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:10,901 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:12,195 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13344#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:45:12,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:12,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:12,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-11-22 01:45:12,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821903321] [2022-11-22 01:45:12,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-22 01:45:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:12,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-22 01:45:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=3852, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 01:45:12,199 INFO L87 Difference]: Start difference. First operand 501 states and 601 transitions. Second operand has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 58 states have internal predecessors, (132), 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) [2022-11-22 01:45:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:13,785 INFO L93 Difference]: Finished difference Result 1111 states and 1315 transitions. [2022-11-22 01:45:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-22 01:45:13,788 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 58 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-22 01:45:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:13,792 INFO L225 Difference]: With dead ends: 1111 [2022-11-22 01:45:13,792 INFO L226 Difference]: Without dead ends: 1101 [2022-11-22 01:45:13,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5489 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2390, Invalid=9820, Unknown=0, NotChecked=0, Total=12210 [2022-11-22 01:45:13,796 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 436 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:13,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 92 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:45:13,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-11-22 01:45:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 855. [2022-11-22 01:45:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.1910902696365768) internal successors, (1016), 854 states have internal predecessors, (1016), 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) [2022-11-22 01:45:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1016 transitions. [2022-11-22 01:45:13,966 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1016 transitions. Word has length 44 [2022-11-22 01:45:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:13,966 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1016 transitions. [2022-11-22 01:45:13,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 58 states have internal predecessors, (132), 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) [2022-11-22 01:45:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1016 transitions. [2022-11-22 01:45:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 01:45:13,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:13,968 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2022-11-22 01:45:13,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:14,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:14,174 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:14,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1193896251, now seen corresponding path program 2 times [2022-11-22 01:45:14,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:14,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584510820] [2022-11-22 01:45:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:14,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:14,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584510820] [2022-11-22 01:45:14,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584510820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:14,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349612264] [2022-11-22 01:45:14,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:45:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:14,525 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:14,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-22 01:45:14,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-22 01:45:14,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:14,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-22 01:45:14,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:14,698 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:45:14,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:45:14,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349612264] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:14,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965425603] [2022-11-22 01:45:14,760 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:14,760 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:14,760 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:14,761 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:14,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:15,102 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:16,221 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16702#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647) (<= 1 |ULTIMATE.start_f_~i~0#1|))' at error location [2022-11-22 01:45:16,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:16,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:16,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 25 [2022-11-22 01:45:16,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850199782] [2022-11-22 01:45:16,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:16,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-22 01:45:16,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-22 01:45:16,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 01:45:16,224 INFO L87 Difference]: Start difference. First operand 855 states and 1016 transitions. Second operand has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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) [2022-11-22 01:45:17,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:17,087 INFO L93 Difference]: Finished difference Result 1265 states and 1509 transitions. [2022-11-22 01:45:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-22 01:45:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-22 01:45:17,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:17,090 INFO L225 Difference]: With dead ends: 1265 [2022-11-22 01:45:17,090 INFO L226 Difference]: Without dead ends: 423 [2022-11-22 01:45:17,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 120 SyntacticMatches, 7 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=525, Invalid=3135, Unknown=0, NotChecked=0, Total=3660 [2022-11-22 01:45:17,095 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 182 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:17,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 67 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:45:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-22 01:45:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 414. [2022-11-22 01:45:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.1019417475728155) internal successors, (454), 413 states have internal predecessors, (454), 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) [2022-11-22 01:45:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 454 transitions. [2022-11-22 01:45:17,215 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 454 transitions. Word has length 45 [2022-11-22 01:45:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:17,216 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 454 transitions. [2022-11-22 01:45:17,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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) [2022-11-22 01:45:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 454 transitions. [2022-11-22 01:45:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 01:45:17,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:17,217 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-22 01:45:17,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:17,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-22 01:45:17,423 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:17,424 INFO L85 PathProgramCache]: Analyzing trace with hash 951903332, now seen corresponding path program 1 times [2022-11-22 01:45:17,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:17,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851570352] [2022-11-22 01:45:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:17,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:17,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851570352] [2022-11-22 01:45:17,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851570352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:17,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548356101] [2022-11-22 01:45:17,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:17,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:17,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:17,780 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:17,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 01:45:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:17,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 01:45:17,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:18,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:18,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548356101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:18,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [14340666] [2022-11-22 01:45:18,713 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:18,713 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:18,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:18,714 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:18,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:19,204 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:20,362 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19555#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:45:20,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:20,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:20,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-11-22 01:45:20,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196745765] [2022-11-22 01:45:20,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:20,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-22 01:45:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-22 01:45:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=3852, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 01:45:20,365 INFO L87 Difference]: Start difference. First operand 414 states and 454 transitions. Second operand has 59 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 58 states have internal predecessors, (144), 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) [2022-11-22 01:45:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:22,014 INFO L93 Difference]: Finished difference Result 509 states and 555 transitions. [2022-11-22 01:45:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-22 01:45:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 58 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-22 01:45:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:22,017 INFO L225 Difference]: With dead ends: 509 [2022-11-22 01:45:22,017 INFO L226 Difference]: Without dead ends: 498 [2022-11-22 01:45:22,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 89 SyntacticMatches, 6 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5499 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2371, Invalid=10739, Unknown=0, NotChecked=0, Total=13110 [2022-11-22 01:45:22,020 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 430 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:22,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 100 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:45:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-11-22 01:45:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 415. [2022-11-22 01:45:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 413 states have (on average 1.0871670702179177) internal successors, (449), 414 states have internal predecessors, (449), 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) [2022-11-22 01:45:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 449 transitions. [2022-11-22 01:45:22,157 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 449 transitions. Word has length 48 [2022-11-22 01:45:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:22,157 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 449 transitions. [2022-11-22 01:45:22,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.4827586206896552) internal successors, (144), 58 states have internal predecessors, (144), 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) [2022-11-22 01:45:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 449 transitions. [2022-11-22 01:45:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-22 01:45:22,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:22,159 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:45:22,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:22,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-22 01:45:22,365 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 437630886, now seen corresponding path program 2 times [2022-11-22 01:45:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:22,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905759314] [2022-11-22 01:45:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:45:22,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905759314] [2022-11-22 01:45:22,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905759314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330759369] [2022-11-22 01:45:22,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:45:22,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:22,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:22,817 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:22,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-22 01:45:22,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 01:45:22,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:22,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:45:22,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-22 01:45:22,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-22 01:45:23,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330759369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:23,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610483381] [2022-11-22 01:45:23,079 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-22 01:45:23,079 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:23,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:23,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:23,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:23,637 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:24,846 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21334#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#t~post1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:45:24,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:24,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:24,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 2, 2] total 24 [2022-11-22 01:45:24,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937246339] [2022-11-22 01:45:24,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:24,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 01:45:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 01:45:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=981, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 01:45:24,848 INFO L87 Difference]: Start difference. First operand 415 states and 449 transitions. Second operand has 26 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 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) [2022-11-22 01:45:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:25,481 INFO L93 Difference]: Finished difference Result 542 states and 581 transitions. [2022-11-22 01:45:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-22 01:45:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-22 01:45:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:25,483 INFO L225 Difference]: With dead ends: 542 [2022-11-22 01:45:25,484 INFO L226 Difference]: Without dead ends: 541 [2022-11-22 01:45:25,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 155 SyntacticMatches, 12 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=675, Invalid=2631, Unknown=0, NotChecked=0, Total=3306 [2022-11-22 01:45:25,485 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 258 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:25,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 160 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:45:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-22 01:45:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 267. [2022-11-22 01:45:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.0676691729323309) internal successors, (284), 266 states have internal predecessors, (284), 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) [2022-11-22 01:45:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 284 transitions. [2022-11-22 01:45:25,560 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 284 transitions. Word has length 60 [2022-11-22 01:45:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:25,561 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 284 transitions. [2022-11-22 01:45:25,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 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) [2022-11-22 01:45:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 284 transitions. [2022-11-22 01:45:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 01:45:25,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:25,562 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:45:25,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:25,767 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 164394038, now seen corresponding path program 2 times [2022-11-22 01:45:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918317814] [2022-11-22 01:45:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:26,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918317814] [2022-11-22 01:45:26,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918317814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394140518] [2022-11-22 01:45:26,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:45:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:26,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:26,351 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:26,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-22 01:45:26,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-22 01:45:26,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:26,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-22 01:45:26,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:27,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:27,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394140518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:27,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870236489] [2022-11-22 01:45:27,962 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:27,963 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:27,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:27,963 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:27,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:28,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:30,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22989#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:45:30,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:30,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:30,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2022-11-22 01:45:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117987633] [2022-11-22 01:45:30,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:30,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-22 01:45:30,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-22 01:45:30,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1304, Invalid=7068, Unknown=0, NotChecked=0, Total=8372 [2022-11-22 01:45:30,023 INFO L87 Difference]: Start difference. First operand 267 states and 284 transitions. Second operand has 83 states, 82 states have (on average 2.268292682926829) internal successors, (186), 82 states have internal predecessors, (186), 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) [2022-11-22 01:45:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:32,284 INFO L93 Difference]: Finished difference Result 523 states and 558 transitions. [2022-11-22 01:45:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-22 01:45:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.268292682926829) internal successors, (186), 82 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-22 01:45:32,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:32,287 INFO L225 Difference]: With dead ends: 523 [2022-11-22 01:45:32,287 INFO L226 Difference]: Without dead ends: 511 [2022-11-22 01:45:32,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 107 SyntacticMatches, 14 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10614 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4534, Invalid=18116, Unknown=0, NotChecked=0, Total=22650 [2022-11-22 01:45:32,290 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 643 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:32,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 106 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:45:32,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-22 01:45:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 311. [2022-11-22 01:45:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0580645161290323) internal successors, (328), 310 states have internal predecessors, (328), 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) [2022-11-22 01:45:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 328 transitions. [2022-11-22 01:45:32,435 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 328 transitions. Word has length 62 [2022-11-22 01:45:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:32,435 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 328 transitions. [2022-11-22 01:45:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.268292682926829) internal successors, (186), 82 states have internal predecessors, (186), 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) [2022-11-22 01:45:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 328 transitions. [2022-11-22 01:45:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 01:45:32,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:32,437 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:32,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-22 01:45:32,643 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 476501520, now seen corresponding path program 5 times [2022-11-22 01:45:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:32,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865483431] [2022-11-22 01:45:32,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:32,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:33,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865483431] [2022-11-22 01:45:33,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865483431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591535616] [2022-11-22 01:45:33,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:45:33,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:33,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:33,796 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:33,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-22 01:45:33,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-11-22 01:45:33,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:33,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-22 01:45:33,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:35,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:36,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591535616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:36,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2028759767] [2022-11-22 01:45:36,694 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:36,694 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:36,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:36,695 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:36,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:36,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:38,073 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24914#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-22 01:45:38,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:38,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:38,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 117 [2022-11-22 01:45:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101878647] [2022-11-22 01:45:38,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-22 01:45:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-22 01:45:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3402, Invalid=13368, Unknown=0, NotChecked=0, Total=16770 [2022-11-22 01:45:38,077 INFO L87 Difference]: Start difference. First operand 311 states and 328 transitions. Second operand has 119 states, 118 states have (on average 2.0847457627118646) internal successors, (246), 118 states have internal predecessors, (246), 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) [2022-11-22 01:45:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:41,550 INFO L93 Difference]: Finished difference Result 839 states and 894 transitions. [2022-11-22 01:45:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-22 01:45:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.0847457627118646) internal successors, (246), 118 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-22 01:45:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:41,554 INFO L225 Difference]: With dead ends: 839 [2022-11-22 01:45:41,555 INFO L226 Difference]: Without dead ends: 817 [2022-11-22 01:45:41,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17334 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=10131, Invalid=32511, Unknown=0, NotChecked=0, Total=42642 [2022-11-22 01:45:41,558 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 896 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:41,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 153 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:45:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-22 01:45:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 527. [2022-11-22 01:45:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.0342205323193916) internal successors, (544), 526 states have internal predecessors, (544), 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) [2022-11-22 01:45:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 544 transitions. [2022-11-22 01:45:41,769 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 544 transitions. Word has length 82 [2022-11-22 01:45:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:41,769 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 544 transitions. [2022-11-22 01:45:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.0847457627118646) internal successors, (246), 118 states have internal predecessors, (246), 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) [2022-11-22 01:45:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 544 transitions. [2022-11-22 01:45:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-22 01:45:41,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:41,771 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2022-11-22 01:45:41,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:41,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:41,977 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash -15011631, now seen corresponding path program 3 times [2022-11-22 01:45:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:41,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733035896] [2022-11-22 01:45:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:41,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:42,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:42,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733035896] [2022-11-22 01:45:42,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733035896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:42,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080681981] [2022-11-22 01:45:42,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:45:42,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:42,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:42,952 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:42,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-22 01:45:43,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:45:43,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:43,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-22 01:45:43,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:44,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:45,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080681981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:45,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [92932092] [2022-11-22 01:45:45,457 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:45,457 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:45,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:45,458 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:45,458 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:45,838 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:48,052 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27673#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:45:48,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:48,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:48,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 111 [2022-11-22 01:45:48,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147060162] [2022-11-22 01:45:48,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-11-22 01:45:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-11-22 01:45:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2338, Invalid=12424, Unknown=0, NotChecked=0, Total=14762 [2022-11-22 01:45:48,054 INFO L87 Difference]: Start difference. First operand 527 states and 544 transitions. Second operand has 113 states, 112 states have (on average 2.25) internal successors, (252), 112 states have internal predecessors, (252), 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) [2022-11-22 01:45:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:51,944 INFO L93 Difference]: Finished difference Result 1209 states and 1252 transitions. [2022-11-22 01:45:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-11-22 01:45:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.25) internal successors, (252), 112 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-22 01:45:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:51,948 INFO L225 Difference]: With dead ends: 1209 [2022-11-22 01:45:51,948 INFO L226 Difference]: Without dead ends: 1193 [2022-11-22 01:45:51,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 148 SyntacticMatches, 19 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19881 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=8459, Invalid=33361, Unknown=0, NotChecked=0, Total=41820 [2022-11-22 01:45:51,950 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1026 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:51,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 133 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:45:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-11-22 01:45:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 532. [2022-11-22 01:45:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 1.0357815442561205) internal successors, (550), 531 states have internal predecessors, (550), 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) [2022-11-22 01:45:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 550 transitions. [2022-11-22 01:45:52,250 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 550 transitions. Word has length 84 [2022-11-22 01:45:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:52,250 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 550 transitions. [2022-11-22 01:45:52,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.25) internal successors, (252), 112 states have internal predecessors, (252), 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) [2022-11-22 01:45:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 550 transitions. [2022-11-22 01:45:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 01:45:52,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:52,252 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1] [2022-11-22 01:45:52,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:52,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-22 01:45:52,452 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:45:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1919874278, now seen corresponding path program 3 times [2022-11-22 01:45:52,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:52,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272275833] [2022-11-22 01:45:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:52,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:53,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:53,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272275833] [2022-11-22 01:45:53,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272275833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:53,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298523296] [2022-11-22 01:45:53,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:45:53,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:53,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:53,643 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:53,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-22 01:45:53,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:45:53,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:53,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-22 01:45:53,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:55,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:56,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298523296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653449365] [2022-11-22 01:45:56,674 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:45:56,674 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:56,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:56,674 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:56,674 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:57,009 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:45:58,859 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31074#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647) (<= 1 |ULTIMATE.start_f_~i~0#1|))' at error location [2022-11-22 01:45:58,859 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:45:58,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:45:58,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 123 [2022-11-22 01:45:58,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967799562] [2022-11-22 01:45:58,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:45:58,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-11-22 01:45:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:58,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-11-22 01:45:58,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2932, Invalid=15158, Unknown=0, NotChecked=0, Total=18090 [2022-11-22 01:45:58,862 INFO L87 Difference]: Start difference. First operand 532 states and 550 transitions. Second operand has 125 states, 124 states have (on average 2.346774193548387) internal successors, (291), 124 states have internal predecessors, (291), 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) [2022-11-22 01:46:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:03,829 INFO L93 Difference]: Finished difference Result 1134 states and 1187 transitions. [2022-11-22 01:46:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-22 01:46:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.346774193548387) internal successors, (291), 124 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-11-22 01:46:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:03,832 INFO L225 Difference]: With dead ends: 1134 [2022-11-22 01:46:03,832 INFO L226 Difference]: Without dead ends: 1114 [2022-11-22 01:46:03,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 183 SyntacticMatches, 14 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24181 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=9890, Invalid=43702, Unknown=0, NotChecked=0, Total=53592 [2022-11-22 01:46:03,835 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1225 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:03,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 157 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:46:03,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-22 01:46:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 627. [2022-11-22 01:46:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.049520766773163) internal successors, (657), 626 states have internal predecessors, (657), 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) [2022-11-22 01:46:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 657 transitions. [2022-11-22 01:46:04,128 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 657 transitions. Word has length 97 [2022-11-22 01:46:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:04,128 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 657 transitions. [2022-11-22 01:46:04,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 2.346774193548387) internal successors, (291), 124 states have internal predecessors, (291), 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) [2022-11-22 01:46:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 657 transitions. [2022-11-22 01:46:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-22 01:46:04,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:04,131 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-11-22 01:46:04,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-22 01:46:04,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-22 01:46:04,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:46:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:04,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2053995599, now seen corresponding path program 4 times [2022-11-22 01:46:04,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:04,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117851312] [2022-11-22 01:46:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:04,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:05,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117851312] [2022-11-22 01:46:05,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117851312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:46:05,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688781924] [2022-11-22 01:46:05,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:46:05,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:05,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:46:05,856 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:46:05,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-22 01:46:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:05,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-22 01:46:05,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:46:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:07,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:46:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:09,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688781924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:46:09,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [760488998] [2022-11-22 01:46:09,923 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:46:09,924 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:46:09,924 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:46:09,924 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:46:09,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:46:10,278 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:46:13,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34604#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:46:13,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:46:13,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:46:13,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 147 [2022-11-22 01:46:13,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412122827] [2022-11-22 01:46:13,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:46:13,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-11-22 01:46:13,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:13,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-11-22 01:46:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3998, Invalid=20808, Unknown=0, NotChecked=0, Total=24806 [2022-11-22 01:46:13,418 INFO L87 Difference]: Start difference. First operand 627 states and 657 transitions. Second operand has 149 states, 148 states have (on average 2.22972972972973) internal successors, (330), 148 states have internal predecessors, (330), 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) [2022-11-22 01:46:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:19,740 INFO L93 Difference]: Finished difference Result 1463 states and 1525 transitions. [2022-11-22 01:46:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-11-22 01:46:19,740 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 2.22972972972973) internal successors, (330), 148 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-22 01:46:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:19,743 INFO L225 Difference]: With dead ends: 1463 [2022-11-22 01:46:19,743 INFO L226 Difference]: Without dead ends: 1444 [2022-11-22 01:46:19,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 196 SyntacticMatches, 25 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34642 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=14785, Invalid=57307, Unknown=0, NotChecked=0, Total=72092 [2022-11-22 01:46:19,746 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1135 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:19,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 195 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:46:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-11-22 01:46:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 627. [2022-11-22 01:46:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.049520766773163) internal successors, (657), 626 states have internal predecessors, (657), 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) [2022-11-22 01:46:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 657 transitions. [2022-11-22 01:46:20,047 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 657 transitions. Word has length 110 [2022-11-22 01:46:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:20,048 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 657 transitions. [2022-11-22 01:46:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 2.22972972972973) internal successors, (330), 148 states have internal predecessors, (330), 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) [2022-11-22 01:46:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 657 transitions. [2022-11-22 01:46:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 01:46:20,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:20,049 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 15, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1] [2022-11-22 01:46:20,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-22 01:46:20,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:20,255 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:46:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash 872565974, now seen corresponding path program 5 times [2022-11-22 01:46:20,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:20,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954806395] [2022-11-22 01:46:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:22,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954806395] [2022-11-22 01:46:22,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954806395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:46:22,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472542764] [2022-11-22 01:46:22,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:46:22,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:22,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:46:22,659 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:46:22,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-22 01:46:22,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-22 01:46:22,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:46:22,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-22 01:46:22,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:46:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:25,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:46:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:28,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472542764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:46:28,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667965701] [2022-11-22 01:46:29,000 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:46:29,000 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:46:29,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:46:29,001 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:46:29,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:46:29,361 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:46:33,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38864#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:46:33,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:46:33,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:46:33,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 189 [2022-11-22 01:46:33,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180963751] [2022-11-22 01:46:33,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:46:33,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-11-22 01:46:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:46:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-11-22 01:46:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6524, Invalid=33276, Unknown=0, NotChecked=0, Total=39800 [2022-11-22 01:46:33,689 INFO L87 Difference]: Start difference. First operand 627 states and 657 transitions. Second operand has 191 states, 190 states have (on average 2.210526315789474) internal successors, (420), 190 states have internal predecessors, (420), 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) [2022-11-22 01:46:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:46:43,325 INFO L93 Difference]: Finished difference Result 1740 states and 1812 transitions. [2022-11-22 01:46:43,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-11-22 01:46:43,326 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.210526315789474) internal successors, (420), 190 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-22 01:46:43,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:46:43,329 INFO L225 Difference]: With dead ends: 1740 [2022-11-22 01:46:43,329 INFO L226 Difference]: Without dead ends: 1716 [2022-11-22 01:46:43,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 251 SyntacticMatches, 32 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56842 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=24400, Invalid=92906, Unknown=0, NotChecked=0, Total=117306 [2022-11-22 01:46:43,334 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1615 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:46:43,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 234 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:46:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-22 01:46:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 675. [2022-11-22 01:46:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.045994065281899) internal successors, (705), 674 states have internal predecessors, (705), 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) [2022-11-22 01:46:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 705 transitions. [2022-11-22 01:46:43,739 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 705 transitions. Word has length 140 [2022-11-22 01:46:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:46:43,739 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 705 transitions. [2022-11-22 01:46:43,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.210526315789474) internal successors, (420), 190 states have internal predecessors, (420), 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) [2022-11-22 01:46:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 705 transitions. [2022-11-22 01:46:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 01:46:43,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:46:43,742 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 13, 13, 13, 12, 12, 12, 11, 11, 2, 1, 1, 1, 1] [2022-11-22 01:46:43,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-22 01:46:43,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:43,948 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:46:43,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:46:43,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1631626053, now seen corresponding path program 6 times [2022-11-22 01:46:43,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:46:43,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866779738] [2022-11-22 01:46:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:46:43,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:46:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:46:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:47,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:46:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866779738] [2022-11-22 01:46:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866779738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:46:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759568049] [2022-11-22 01:46:47,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:46:47,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:46:47,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:46:47,140 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:46:47,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-22 01:46:47,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:46:47,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:46:47,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-22 01:46:47,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:46:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:50,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:46:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:46:55,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759568049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:46:55,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2141647671] [2022-11-22 01:46:55,581 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:46:55,582 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:46:55,582 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:46:55,582 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:46:55,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:46:55,948 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:47:00,995 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43875#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:47:00,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:47:00,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:47:00,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 219 [2022-11-22 01:47:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157803251] [2022-11-22 01:47:00,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:47:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2022-11-22 01:47:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2022-11-22 01:47:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8662, Invalid=44008, Unknown=0, NotChecked=0, Total=52670 [2022-11-22 01:47:01,002 INFO L87 Difference]: Start difference. First operand 675 states and 705 transitions. Second operand has 221 states, 220 states have (on average 2.3454545454545452) internal successors, (516), 220 states have internal predecessors, (516), 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) [2022-11-22 01:47:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:15,139 INFO L93 Difference]: Finished difference Result 1530 states and 1627 transitions. [2022-11-22 01:47:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-22 01:47:15,140 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 220 states have (on average 2.3454545454545452) internal successors, (516), 220 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-11-22 01:47:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:15,147 INFO L225 Difference]: With dead ends: 1530 [2022-11-22 01:47:15,147 INFO L226 Difference]: Without dead ends: 1494 [2022-11-22 01:47:15,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 322 SyntacticMatches, 37 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83528 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=33028, Invalid=140444, Unknown=0, NotChecked=0, Total=173472 [2022-11-22 01:47:15,156 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2345 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:15,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 259 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:47:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-22 01:47:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 820. [2022-11-22 01:47:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 1.0622710622710623) internal successors, (870), 819 states have internal predecessors, (870), 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) [2022-11-22 01:47:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 870 transitions. [2022-11-22 01:47:15,787 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 870 transitions. Word has length 172 [2022-11-22 01:47:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:15,788 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 870 transitions. [2022-11-22 01:47:15,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 220 states have (on average 2.3454545454545452) internal successors, (516), 220 states have internal predecessors, (516), 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) [2022-11-22 01:47:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 870 transitions. [2022-11-22 01:47:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-22 01:47:15,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:15,790 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:47:15,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-22 01:47:15,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:47:15,997 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:47:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash -432884600, now seen corresponding path program 6 times [2022-11-22 01:47:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:15,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382093659] [2022-11-22 01:47:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:47:20,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:20,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382093659] [2022-11-22 01:47:20,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382093659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:47:20,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772551312] [2022-11-22 01:47:20,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:47:20,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:47:20,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:47:20,529 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:47:20,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-22 01:47:20,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:47:20,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:47:20,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-22 01:47:20,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:47:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:47:25,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:47:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:47:32,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772551312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:47:32,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [246472023] [2022-11-22 01:47:32,232 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:47:32,232 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:47:32,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:47:32,233 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:47:32,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:47:32,348 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:47:34,099 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48929#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-22 01:47:34,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:47:34,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:47:34,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 261 [2022-11-22 01:47:34,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624287217] [2022-11-22 01:47:34,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:47:34,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2022-11-22 01:47:34,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:47:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2022-11-22 01:47:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15882, Invalid=58920, Unknown=0, NotChecked=0, Total=74802 [2022-11-22 01:47:34,109 INFO L87 Difference]: Start difference. First operand 820 states and 870 transitions. Second operand has 263 states, 262 states have (on average 2.0381679389312977) internal successors, (534), 262 states have internal predecessors, (534), 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) [2022-11-22 01:47:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:47:49,746 INFO L93 Difference]: Finished difference Result 2068 states and 2204 transitions. [2022-11-22 01:47:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2022-11-22 01:47:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 262 states have (on average 2.0381679389312977) internal successors, (534), 262 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2022-11-22 01:47:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:47:49,753 INFO L225 Difference]: With dead ends: 2068 [2022-11-22 01:47:49,753 INFO L226 Difference]: Without dead ends: 2022 [2022-11-22 01:47:49,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80530 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=49167, Invalid=150195, Unknown=0, NotChecked=0, Total=199362 [2022-11-22 01:47:49,767 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2331 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:47:49,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 330 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:47:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2022-11-22 01:47:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1300. [2022-11-22 01:47:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.0392609699769053) internal successors, (1350), 1299 states have internal predecessors, (1350), 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) [2022-11-22 01:47:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1350 transitions. [2022-11-22 01:47:50,724 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1350 transitions. Word has length 178 [2022-11-22 01:47:50,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:47:50,725 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1350 transitions. [2022-11-22 01:47:50,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 262 states have (on average 2.0381679389312977) internal successors, (534), 262 states have internal predecessors, (534), 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) [2022-11-22 01:47:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1350 transitions. [2022-11-22 01:47:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-22 01:47:50,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:47:50,727 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 22, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1] [2022-11-22 01:47:50,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-22 01:47:50,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:47:50,934 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:47:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:47:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2144638538, now seen corresponding path program 7 times [2022-11-22 01:47:50,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:47:50,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550341679] [2022-11-22 01:47:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:47:50,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:47:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:47:54,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:47:54,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550341679] [2022-11-22 01:47:54,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550341679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:47:54,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154118778] [2022-11-22 01:47:54,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:47:54,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:47:54,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:47:54,800 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:47:54,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-22 01:47:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:47:54,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-22 01:47:54,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:47:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:47:58,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:48:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:48:04,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154118778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:48:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735950232] [2022-11-22 01:48:04,900 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:48:04,900 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:48:04,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:48:04,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:48:04,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:48:05,225 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:48:11,742 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55500#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:48:11,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:48:11,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:48:11,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 249 [2022-11-22 01:48:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512080608] [2022-11-22 01:48:11,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:48:11,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2022-11-22 01:48:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:11,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2022-11-22 01:48:11,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11312, Invalid=56028, Unknown=0, NotChecked=0, Total=67340 [2022-11-22 01:48:11,748 INFO L87 Difference]: Start difference. First operand 1300 states and 1350 transitions. Second operand has 251 states, 250 states have (on average 2.184) internal successors, (546), 250 states have internal predecessors, (546), 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) [2022-11-22 01:48:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:28,812 INFO L93 Difference]: Finished difference Result 3244 states and 3352 transitions. [2022-11-22 01:48:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-11-22 01:48:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 250 states have (on average 2.184) internal successors, (546), 250 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-11-22 01:48:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:28,822 INFO L225 Difference]: With dead ends: 3244 [2022-11-22 01:48:28,822 INFO L226 Difference]: Without dead ends: 3212 [2022-11-22 01:48:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 327 SyntacticMatches, 42 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97425 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=42348, Invalid=157014, Unknown=0, NotChecked=0, Total=199362 [2022-11-22 01:48:28,835 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2566 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2566 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:28,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2566 Valid, 296 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 01:48:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-11-22 01:48:30,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 1300. [2022-11-22 01:48:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.0392609699769053) internal successors, (1350), 1299 states have internal predecessors, (1350), 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) [2022-11-22 01:48:30,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1350 transitions. [2022-11-22 01:48:30,030 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1350 transitions. Word has length 182 [2022-11-22 01:48:30,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:30,031 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1350 transitions. [2022-11-22 01:48:30,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 250 states have (on average 2.184) internal successors, (546), 250 states have internal predecessors, (546), 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) [2022-11-22 01:48:30,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1350 transitions. [2022-11-22 01:48:30,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-22 01:48:30,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:30,034 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 28, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1] [2022-11-22 01:48:30,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-22 01:48:30,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-22 01:48:30,240 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:48:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1216761593, now seen corresponding path program 8 times [2022-11-22 01:48:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:30,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350949470] [2022-11-22 01:48:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:48:35,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350949470] [2022-11-22 01:48:35,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350949470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:48:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143014865] [2022-11-22 01:48:35,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:48:35,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:48:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:48:35,713 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:48:35,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-22 01:48:35,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-11-22 01:48:35,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:48:35,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-22 01:48:35,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:48:41,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:48:41,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:48:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:48:50,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143014865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:48:50,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4003142] [2022-11-22 01:48:50,378 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:48:50,378 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:48:50,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:48:50,379 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:48:50,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:48:50,752 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:48:59,569 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64061#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:48:59,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:48:59,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:48:59,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 303 [2022-11-22 01:48:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138505691] [2022-11-22 01:48:59,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:48:59,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 305 states [2022-11-22 01:48:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 305 interpolants. [2022-11-22 01:48:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16738, Invalid=81544, Unknown=0, NotChecked=0, Total=98282 [2022-11-22 01:48:59,577 INFO L87 Difference]: Start difference. First operand 1300 states and 1350 transitions. Second operand has 305 states, 304 states have (on average 2.1710526315789473) internal successors, (660), 304 states have internal predecessors, (660), 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) [2022-11-22 01:49:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:49:24,750 INFO L93 Difference]: Finished difference Result 3377 states and 3499 transitions. [2022-11-22 01:49:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2022-11-22 01:49:24,751 INFO L78 Accepts]: Start accepts. Automaton has has 305 states, 304 states have (on average 2.1710526315789473) internal successors, (660), 304 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2022-11-22 01:49:24,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:49:24,756 INFO L225 Difference]: With dead ends: 3377 [2022-11-22 01:49:24,756 INFO L226 Difference]: Without dead ends: 3338 [2022-11-22 01:49:24,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 396 SyntacticMatches, 51 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143331 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=62715, Invalid=229425, Unknown=0, NotChecked=0, Total=292140 [2022-11-22 01:49:24,767 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3476 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:49:24,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3476 Valid, 339 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:49:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2022-11-22 01:49:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 1300. [2022-11-22 01:49:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.0392609699769053) internal successors, (1350), 1299 states have internal predecessors, (1350), 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) [2022-11-22 01:49:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1350 transitions. [2022-11-22 01:49:26,184 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1350 transitions. Word has length 220 [2022-11-22 01:49:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:49:26,184 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1350 transitions. [2022-11-22 01:49:26,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 305 states, 304 states have (on average 2.1710526315789473) internal successors, (660), 304 states have internal predecessors, (660), 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) [2022-11-22 01:49:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1350 transitions. [2022-11-22 01:49:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-11-22 01:49:26,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:49:26,187 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 25, 25, 25, 16, 16, 16, 15, 15, 10, 1, 1, 1, 1] [2022-11-22 01:49:26,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-22 01:49:26,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-22 01:49:26,390 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:49:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:49:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash -916229721, now seen corresponding path program 9 times [2022-11-22 01:49:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:49:26,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468569014] [2022-11-22 01:49:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:49:26,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:49:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:49:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:32,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:49:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468569014] [2022-11-22 01:49:32,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468569014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:49:32,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924354456] [2022-11-22 01:49:32,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:49:32,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:49:32,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:49:32,844 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:49:32,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-22 01:49:32,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:49:32,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:49:32,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-22 01:49:32,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:49:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:40,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:50,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924354456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [846288631] [2022-11-22 01:49:50,754 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:49:50,754 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:50,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:50,755 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:50,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:51,084 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:01,131 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73134#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:50:01,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:01,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:50:01,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 339 [2022-11-22 01:50:01,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670497756] [2022-11-22 01:50:01,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:01,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 341 states [2022-11-22 01:50:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 341 interpolants. [2022-11-22 01:50:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19934, Invalid=102216, Unknown=0, NotChecked=0, Total=122150 [2022-11-22 01:50:01,145 INFO L87 Difference]: Start difference. First operand 1300 states and 1350 transitions. Second operand has 341 states, 340 states have (on average 2.2941176470588234) internal successors, (780), 340 states have internal predecessors, (780), 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) [2022-11-22 01:50:37,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:37,988 INFO L93 Difference]: Finished difference Result 3321 states and 3455 transitions. [2022-11-22 01:50:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2022-11-22 01:50:37,989 INFO L78 Accepts]: Start accepts. Automaton has has 341 states, 340 states have (on average 2.2941176470588234) internal successors, (780), 340 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2022-11-22 01:50:37,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:37,994 INFO L225 Difference]: With dead ends: 3321 [2022-11-22 01:50:37,994 INFO L226 Difference]: Without dead ends: 3276 [2022-11-22 01:50:38,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 486 SyntacticMatches, 57 SemanticMatches, 631 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194073 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=78450, Invalid=321606, Unknown=0, NotChecked=0, Total=400056 [2022-11-22 01:50:38,020 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3974 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3974 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:38,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3974 Valid, 407 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-22 01:50:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2022-11-22 01:50:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 1420. [2022-11-22 01:50:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.0472163495419309) internal successors, (1486), 1419 states have internal predecessors, (1486), 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) [2022-11-22 01:50:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1486 transitions. [2022-11-22 01:50:39,609 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1486 transitions. Word has length 260 [2022-11-22 01:50:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:39,609 INFO L495 AbstractCegarLoop]: Abstraction has 1420 states and 1486 transitions. [2022-11-22 01:50:39,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 341 states, 340 states have (on average 2.2941176470588234) internal successors, (780), 340 states have internal predecessors, (780), 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) [2022-11-22 01:50:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1486 transitions. [2022-11-22 01:50:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-22 01:50:39,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:39,611 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 44, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1] [2022-11-22 01:50:39,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:39,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-22 01:50:39,812 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:50:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1242585498, now seen corresponding path program 10 times [2022-11-22 01:50:39,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:39,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114946133] [2022-11-22 01:50:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:39,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:50:49,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:49,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114946133] [2022-11-22 01:50:49,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114946133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:50:49,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495720307] [2022-11-22 01:50:49,414 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:50:49,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:49,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:49,415 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:49,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-22 01:50:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-22 01:50:49,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:00,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:51:16,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495720307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:16,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [654330135] [2022-11-22 01:51:16,574 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:51:16,574 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:51:16,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:51:16,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:51:16,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:51:16,892 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:51:32,124 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82699#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:51:32,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:51:32,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:51:32,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 417 [2022-11-22 01:51:32,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862720470] [2022-11-22 01:51:32,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:32,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-11-22 01:51:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:32,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-11-22 01:51:32,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32296, Invalid=150460, Unknown=0, NotChecked=0, Total=182756 [2022-11-22 01:51:32,144 INFO L87 Difference]: Start difference. First operand 1420 states and 1486 transitions. Second operand has 419 states, 418 states have (on average 2.138755980861244) internal successors, (894), 418 states have internal predecessors, (894), 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) [2022-11-22 01:52:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:26,002 INFO L93 Difference]: Finished difference Result 4647 states and 4819 transitions. [2022-11-22 01:52:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 448 states. [2022-11-22 01:52:26,003 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 418 states have (on average 2.138755980861244) internal successors, (894), 418 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-11-22 01:52:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:26,014 INFO L225 Difference]: With dead ends: 4647 [2022-11-22 01:52:26,015 INFO L226 Difference]: Without dead ends: 4591 [2022-11-22 01:52:26,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1338 GetRequests, 535 SyntacticMatches, 70 SemanticMatches, 733 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266443 ImplicationChecksByTransitivity, 71.3s TimeCoverageRelationStatistics Valid=119134, Invalid=420356, Unknown=0, NotChecked=0, Total=539490 [2022-11-22 01:52:26,034 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4401 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:26,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 498 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 01:52:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2022-11-22 01:52:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 1644. [2022-11-22 01:52:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 1.040779062690201) internal successors, (1710), 1643 states have internal predecessors, (1710), 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) [2022-11-22 01:52:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 1710 transitions. [2022-11-22 01:52:29,025 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 1710 transitions. Word has length 298 [2022-11-22 01:52:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:29,026 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 1710 transitions. [2022-11-22 01:52:29,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 418 states have (on average 2.138755980861244) internal successors, (894), 418 states have internal predecessors, (894), 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) [2022-11-22 01:52:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 1710 transitions. [2022-11-22 01:52:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-22 01:52:29,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:29,031 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 52, 19, 19, 19, 10, 10, 10, 9, 9, 1, 1, 1, 1] [2022-11-22 01:52:29,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-22 01:52:29,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-22 01:52:29,232 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:52:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash 566088787, now seen corresponding path program 11 times [2022-11-22 01:52:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:29,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318009387] [2022-11-22 01:52:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:52:42,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:52:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318009387] [2022-11-22 01:52:42,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318009387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:52:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964211916] [2022-11-22 01:52:42,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:52:42,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:52:42,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:52:42,012 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:52:42,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-22 01:52:42,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-11-22 01:52:42,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:52:42,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-22 01:52:42,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:52:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:52:55,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:17,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964211916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:17,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1040883282] [2022-11-22 01:53:17,752 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:53:17,752 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:17,752 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:53:17,752 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:53:17,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:53:18,204 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:53:37,583 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '94848#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:53:37,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:53:37,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:53:37,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-11-22 01:53:37,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284715262] [2022-11-22 01:53:37,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:53:37,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-11-22 01:53:37,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-11-22 01:53:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43406, Invalid=200136, Unknown=0, NotChecked=0, Total=243542 [2022-11-22 01:53:37,601 INFO L87 Difference]: Start difference. First operand 1644 states and 1710 transitions. Second operand has 485 states, 484 states have (on average 2.1322314049586777) internal successors, (1032), 484 states have internal predecessors, (1032), 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) [2022-11-22 01:54:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:54:53,264 INFO L93 Difference]: Finished difference Result 4552 states and 4742 transitions. [2022-11-22 01:54:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 518 states. [2022-11-22 01:54:53,265 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.1322314049586777) internal successors, (1032), 484 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-22 01:54:53,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:54:53,275 INFO L225 Difference]: With dead ends: 4552 [2022-11-22 01:54:53,275 INFO L226 Difference]: Without dead ends: 4487 [2022-11-22 01:54:53,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 618 SyntacticMatches, 81 SemanticMatches, 847 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356138 ImplicationChecksByTransitivity, 92.8s TimeCoverageRelationStatistics Valid=159906, Invalid=560046, Unknown=0, NotChecked=0, Total=719952 [2022-11-22 01:54:53,320 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7436 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7436 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 3492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:54:53,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7436 Valid, 541 Invalid, 3492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [657 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 01:54:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2022-11-22 01:54:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 1842. [2022-11-22 01:54:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.0363932645301466) internal successors, (1908), 1841 states have internal predecessors, (1908), 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) [2022-11-22 01:54:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 1908 transitions. [2022-11-22 01:54:56,647 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 1908 transitions. Word has length 344 [2022-11-22 01:54:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:54:56,647 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 1908 transitions. [2022-11-22 01:54:56,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.1322314049586777) internal successors, (1032), 484 states have internal predecessors, (1032), 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) [2022-11-22 01:54:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 1908 transitions. [2022-11-22 01:54:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-22 01:54:56,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:54:56,650 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 39, 39, 39, 22, 20, 20, 20, 19, 19, 1, 1, 1, 1] [2022-11-22 01:54:56,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-22 01:54:56,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:54:56,851 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:54:56,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:54:56,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1689947559, now seen corresponding path program 12 times [2022-11-22 01:54:56,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:54:56,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959148155] [2022-11-22 01:54:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:54:56,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:54:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:55:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:09,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:55:09,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959148155] [2022-11-22 01:55:09,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959148155] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:55:09,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655295923] [2022-11-22 01:55:09,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:55:09,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:55:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:55:09,860 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:55:09,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-22 01:55:10,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:55:10,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:55:10,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-22 01:55:10,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:55:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:23,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:55:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:44,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655295923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:55:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1300825536] [2022-11-22 01:55:44,650 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:55:44,650 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:55:44,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:55:44,650 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:55:44,650 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:55:44,962 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:03,408 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '107377#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-22 01:56:03,408 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:56:03,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:56:03,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-11-22 01:56:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336359541] [2022-11-22 01:56:03,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:56:03,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-11-22 01:56:03,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-11-22 01:56:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39886, Invalid=203656, Unknown=0, NotChecked=0, Total=243542 [2022-11-22 01:56:03,428 INFO L87 Difference]: Start difference. First operand 1842 states and 1908 transitions. Second operand has 485 states, 484 states have (on average 2.256198347107438) internal successors, (1092), 484 states have internal predecessors, (1092), 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) [2022-11-22 01:57:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:57:26,716 INFO L93 Difference]: Finished difference Result 4270 states and 4452 transitions. [2022-11-22 01:57:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 558 states. [2022-11-22 01:57:26,717 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.256198347107438) internal successors, (1092), 484 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2022-11-22 01:57:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:57:26,728 INFO L225 Difference]: With dead ends: 4270 [2022-11-22 01:57:26,728 INFO L226 Difference]: Without dead ends: 4209 [2022-11-22 01:57:26,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 678 SyntacticMatches, 81 SemanticMatches, 887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385032 ImplicationChecksByTransitivity, 95.6s TimeCoverageRelationStatistics Valid=158646, Invalid=630786, Unknown=0, NotChecked=0, Total=789432 [2022-11-22 01:57:26,778 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6436 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 1054 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6436 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 3939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:57:26,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6436 Valid, 543 Invalid, 3939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1054 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 01:57:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-11-22 01:57:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 1962. [2022-11-22 01:57:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.0423253442121367) internal successors, (2044), 1961 states have internal predecessors, (2044), 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) [2022-11-22 01:57:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2044 transitions. [2022-11-22 01:57:29,939 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2044 transitions. Word has length 364 [2022-11-22 01:57:29,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:57:29,940 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2044 transitions. [2022-11-22 01:57:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.256198347107438) internal successors, (1092), 484 states have internal predecessors, (1092), 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) [2022-11-22 01:57:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2044 transitions. [2022-11-22 01:57:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-22 01:57:29,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:57:29,943 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 74, 21, 21, 21, 11, 11, 11, 10, 10, 1, 1, 1, 1] [2022-11-22 01:57:29,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-22 01:57:30,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-22 01:57:30,144 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 01:57:30,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:57:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1383624174, now seen corresponding path program 13 times [2022-11-22 01:57:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:57:30,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350175276] [2022-11-22 01:57:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:57:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:57:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14999 backedges. 0 proven. 14999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:57:52,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:57:52,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350175276] [2022-11-22 01:57:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350175276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:57:52,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680164419] [2022-11-22 01:57:52,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:57:52,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:52,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:52,717 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:57:52,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19c51798-f8d4-4d91-aee1-87e13a072d36/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-22 01:57:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:57:52,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 213 conjunts are in the unsatisfiable core [2022-11-22 01:57:52,916 INFO L286 TraceCheckSpWp]: Computing forward predicates...