./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6ceef81d5d5c6ec4b435ae3bf6300a70928e11f3a8c1d376463323495e50f12 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:44:47,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:44:47,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:44:47,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:44:47,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:44:47,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:44:47,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:44:47,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:44:47,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:44:47,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:44:47,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:44:47,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:44:47,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:44:47,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:44:47,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:44:47,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:44:47,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:44:47,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:44:47,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:44:47,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:44:47,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:44:47,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:44:47,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:44:47,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:44:47,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:44:47,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:44:47,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:44:47,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:44:47,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:44:47,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:44:47,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:44:47,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:44:47,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:44:47,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:44:47,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:44:47,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:44:47,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:44:47,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:44:47,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:44:47,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:44:47,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:44:47,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:44:47,547 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:44:47,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:44:47,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:44:47,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:44:47,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:44:47,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:44:47,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:44:47,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:44:47,550 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:44:47,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:44:47,551 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:44:47,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:44:47,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:44:47,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:44:47,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:44:47,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:44:47,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:44:47,552 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:44:47,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:44:47,552 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:44:47,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:44:47,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:44:47,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:44:47,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:44:47,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:44:47,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:44:47,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:44:47,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:44:47,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:44:47,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:44:47,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:44:47,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:44:47,555 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:44:47,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:44:47,555 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:44:47,555 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6ceef81d5d5c6ec4b435ae3bf6300a70928e11f3a8c1d376463323495e50f12 [2023-02-17 06:44:47,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:44:47,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:44:47,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:44:47,741 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:44:47,742 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:44:47,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c [2023-02-17 06:44:48,706 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:44:48,877 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:44:48,877 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c [2023-02-17 06:44:48,881 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48911f5ea/d9f3c1448b724c5d84155f8b54c3e857/FLAG4c87b5a99 [2023-02-17 06:44:48,893 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48911f5ea/d9f3c1448b724c5d84155f8b54c3e857 [2023-02-17 06:44:48,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:44:48,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:44:48,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:44:48,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:44:48,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:44:48,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:44:48" (1/1) ... [2023-02-17 06:44:48,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edfc8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:48, skipping insertion in model container [2023-02-17 06:44:48,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:44:48" (1/1) ... [2023-02-17 06:44:48,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:44:48,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:44:49,001 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[557,570] [2023-02-17 06:44:49,005 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[613,626] [2023-02-17 06:44:49,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:44:49,014 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:44:49,025 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[557,570] [2023-02-17 06:44:49,026 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[613,626] [2023-02-17 06:44:49,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:44:49,034 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:44:49,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49 WrapperNode [2023-02-17 06:44:49,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:44:49,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:44:49,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:44:49,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:44:49,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,055 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-02-17 06:44:49,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:44:49,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:44:49,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:44:49,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:44:49,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:44:49,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:44:49,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:44:49,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:44:49,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (1/1) ... [2023-02-17 06:44:49,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:44:49,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:44:49,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 06:44:49,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 06:44:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:44:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:44:49,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:44:49,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:44:49,156 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:44:49,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:44:49,225 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:44:49,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:44:49,228 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:44:49,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:44:49 BoogieIcfgContainer [2023-02-17 06:44:49,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:44:49,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:44:49,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:44:49,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:44:49,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:44:48" (1/3) ... [2023-02-17 06:44:49,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afcd882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:44:49, skipping insertion in model container [2023-02-17 06:44:49,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:44:49" (2/3) ... [2023-02-17 06:44:49,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afcd882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:44:49, skipping insertion in model container [2023-02-17 06:44:49,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:44:49" (3/3) ... [2023-02-17 06:44:49,244 INFO L112 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-a.c [2023-02-17 06:44:49,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:44:49,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-02-17 06:44:49,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:44:49,288 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=PETRI_NET, 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;@31224ad7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:44:49,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-02-17 06:44:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:49,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:44:49,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:44:49,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:44:49,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:44:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:44:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 889577263, now seen corresponding path program 1 times [2023-02-17 06:44:49,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:44:49,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191642563] [2023-02-17 06:44:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:49,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:44:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:44:49,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191642563] [2023-02-17 06:44:49,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191642563] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:44:49,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:44:49,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 06:44:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099931531] [2023-02-17 06:44:49,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:44:49,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 06:44:49,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:44:49,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 06:44:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:44:49,467 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:49,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:44:49,476 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-02-17 06:44:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 06:44:49,478 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 06:44:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:44:49,482 INFO L225 Difference]: With dead ends: 22 [2023-02-17 06:44:49,482 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 06:44:49,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:44:49,487 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:44:49,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:44:49,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 06:44:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 06:44:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 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) [2023-02-17 06:44:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-02-17 06:44:49,508 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2023-02-17 06:44:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:44:49,509 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-02-17 06:44:49,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-02-17 06:44:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:44:49,510 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:44:49,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:44:49,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 06:44:49,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:44:49,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:44:49,513 INFO L85 PathProgramCache]: Analyzing trace with hash 889573419, now seen corresponding path program 1 times [2023-02-17 06:44:49,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:44:49,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205920426] [2023-02-17 06:44:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:49,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:44:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:49,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:44:49,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205920426] [2023-02-17 06:44:49,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205920426] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:44:49,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:44:49,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 06:44:49,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141174039] [2023-02-17 06:44:49,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:44:49,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 06:44:49,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:44:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 06:44:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:44:49,690 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 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) [2023-02-17 06:44:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:44:49,702 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-02-17 06:44:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 06:44:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-02-17 06:44:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:44:49,703 INFO L225 Difference]: With dead ends: 17 [2023-02-17 06:44:49,703 INFO L226 Difference]: Without dead ends: 11 [2023-02-17 06:44:49,703 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 [2023-02-17 06:44:49,704 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:44:49,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:44:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-17 06:44:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-17 06:44:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-02-17 06:44:49,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2023-02-17 06:44:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:44:49,708 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-02-17 06:44:49,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-02-17 06:44:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-02-17 06:44:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:44:49,709 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:44:49,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:44:49,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 06:44:49,709 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:44:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:44:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1807024099, now seen corresponding path program 1 times [2023-02-17 06:44:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:44:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185512653] [2023-02-17 06:44:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:44:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:49,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:44:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185512653] [2023-02-17 06:44:49,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185512653] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:44:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287273680] [2023-02-17 06:44:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:49,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:44:49,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:44:49,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 06:44:49,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 06:44:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:49,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 06:44:49,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:44:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:49,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:44:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:49,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287273680] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:44:49,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:44:49,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-17 06:44:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052069323] [2023-02-17 06:44:49,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:44:49,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 06:44:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:44:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 06:44:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-17 06:44:49,961 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:51,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:44:53,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:44:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:44:53,083 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-02-17 06:44:53,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 06:44:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 06:44:53,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:44:53,084 INFO L225 Difference]: With dead ends: 28 [2023-02-17 06:44:53,084 INFO L226 Difference]: Without dead ends: 22 [2023-02-17 06:44:53,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-17 06:44:53,085 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:44:53,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 22 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-02-17 06:44:53,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-17 06:44:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2023-02-17 06:44:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-17 06:44:53,089 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2023-02-17 06:44:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:44:53,090 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-17 06:44:53,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-17 06:44:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 06:44:53,090 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:44:53,090 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:44:53,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 06:44:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:44:53,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:44:53,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:44:53,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1384984081, now seen corresponding path program 1 times [2023-02-17 06:44:53,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:44:53,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16329934] [2023-02-17 06:44:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:53,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:44:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:44:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16329934] [2023-02-17 06:44:53,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16329934] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:44:53,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707456582] [2023-02-17 06:44:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:53,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:44:53,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:44:53,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 06:44:53,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 06:44:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:53,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 06:44:53,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:44:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:53,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:44:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:53,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707456582] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:44:53,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:44:53,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-17 06:44:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655697742] [2023-02-17 06:44:53,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:44:53,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 06:44:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:44:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 06:44:53,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:44:53,762 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:44:53,876 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-02-17 06:44:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 06:44:53,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 9 [2023-02-17 06:44:53,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:44:53,878 INFO L225 Difference]: With dead ends: 26 [2023-02-17 06:44:53,878 INFO L226 Difference]: Without dead ends: 18 [2023-02-17 06:44:53,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:44:53,879 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:44:53,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:44:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-17 06:44:53,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-02-17 06:44:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-17 06:44:53,884 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2023-02-17 06:44:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:44:53,884 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-17 06:44:53,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:44:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-17 06:44:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 06:44:53,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:44:53,885 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-02-17 06:44:53,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 06:44:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 06:44:54,086 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:44:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:44:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -13631957, now seen corresponding path program 2 times [2023-02-17 06:44:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:44:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430653492] [2023-02-17 06:44:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:44:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:44:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:44:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:54,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:44:54,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430653492] [2023-02-17 06:44:54,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430653492] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:44:54,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476203958] [2023-02-17 06:44:54,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 06:44:54,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:44:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:44:54,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 06:44:54,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 06:44:54,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 06:44:54,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:44:54,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 06:44:54,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:44:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:44:54,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:45:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:45:26,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476203958] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:45:26,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:45:26,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-17 06:45:26,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077740446] [2023-02-17 06:45:26,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:45:26,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 06:45:26,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:45:26,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 06:45:26,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=94, Unknown=4, NotChecked=0, Total=156 [2023-02-17 06:45:26,189 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:45:42,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:43,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:45,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:47,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:50,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:53,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:56,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:58,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:45:59,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:46:01,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-02-17 06:46:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:46:02,013 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-02-17 06:46:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 06:46:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 [2023-02-17 06:46:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:46:02,014 INFO L225 Difference]: With dead ends: 40 [2023-02-17 06:46:02,015 INFO L226 Difference]: Without dead ends: 36 [2023-02-17 06:46:02,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=162, Invalid=249, Unknown=9, NotChecked=0, Total=420 [2023-02-17 06:46:02,015 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-02-17 06:46:02,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 27 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 7 Unknown, 0 Unchecked, 21.8s Time] [2023-02-17 06:46:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-17 06:46:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 21. [2023-02-17 06:46:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 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) [2023-02-17 06:46:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-17 06:46:02,021 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2023-02-17 06:46:02,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:46:02,021 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-17 06:46:02,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:46:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-17 06:46:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 06:46:02,021 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:46:02,021 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:46:02,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 06:46:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:46:02,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:46:02,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:46:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1963737105, now seen corresponding path program 2 times [2023-02-17 06:46:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:46:02,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739750812] [2023-02-17 06:46:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:46:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:46:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:46:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:46:02,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:46:02,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739750812] [2023-02-17 06:46:02,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739750812] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:46:02,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598609486] [2023-02-17 06:46:02,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 06:46:02,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:46:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:46:02,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 06:46:02,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 06:46:02,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 06:46:02,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:46:02,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 06:46:02,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:46:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:46:02,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:46:52,027 WARN L837 $PredicateComparison]: unable to prove that (forall ((|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_17_43_94_106| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| Int) (|aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_17_43_94| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_17_43_94_106_117| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157| Int)) (let ((.cse43 (+ |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| 256))) (.cse19 (+ |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| 256))) (.cse47 (+ |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| 256)))) (let ((.cse24 (+ .cse47 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229| 256))) (.cse60 (+ .cse19 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229| 256))) (.cse32 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229| 256) .cse43))) (let ((.cse50 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217| 256) .cse32)) (.cse4 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217| 256) .cse60)) (.cse51 (+ .cse24 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217| 256)))) (let ((.cse53 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205| 256) .cse51)) (.cse56 (+ .cse4 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205| 256))) (.cse22 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205| 256) .cse50))) (let ((.cse18 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193| 256) .cse22)) (.cse54 (+ .cse56 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193| 256))) (.cse20 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193| 256) .cse53))) (let ((.cse26 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181| 256) .cse20)) (.cse1 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181| 256) .cse54)) (.cse55 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181| 256) .cse18))) (let ((.cse25 (+ .cse55 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169| 256))) (.cse9 (+ .cse1 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169| 256))) (.cse42 (+ .cse26 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169| 256)))) (let ((.cse13 (+ .cse42 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157| 256))) (.cse0 (+ .cse9 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157| 256))) (.cse28 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157| 256) .cse25))) (let ((.cse36 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145| 256) .cse28)) (.cse23 (+ .cse0 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145| 256))) (.cse38 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145| 256) .cse13))) (let ((.cse8 (+ .cse38 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133| 256))) (.cse35 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133| 256) .cse23)) (.cse12 (+ .cse36 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133| 256)))) (let ((.cse33 (+ .cse12 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121| 256))) (.cse44 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121| 256) .cse35)) (.cse49 (+ .cse8 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121| 256)))) (let ((.cse34 (+ .cse49 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109| 256))) (.cse6 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109| 256) .cse44)) (.cse30 (+ .cse33 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109| 256)))) (let ((.cse5 (+ .cse30 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98| 256))) (.cse48 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98| 256) .cse6)) (.cse3 (+ .cse34 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98| 256)))) (let ((.cse10 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87| 256) .cse3)) (.cse29 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87| 256) .cse48)) (.cse21 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87| 256) .cse5))) (let ((.cse37 (+ .cse21 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76| 256))) (.cse46 (+ .cse29 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76| 256))) (.cse2 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76| 256) .cse10))) (let ((.cse11 (+ .cse2 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65| 256))) (.cse7 (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65| 256) .cse46)) (.cse41 (+ .cse37 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65| 256)))) (let ((.cse31 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54| 256) .cse41)) (.cse40 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54| 256) .cse7)) (.cse52 (+ .cse11 (* |aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54| 256))) (.cse17 (* |aux_div_aux_mod_v_ULTIMATE.start_main_~v~0#1_17_43_94| (- 4294967296))) (.cse15 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_17_43_94_106| (- 256))) (.cse16 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_17_43_94_106_117| (- 4294967296)))) (or (>= .cse0 256) (>= .cse1 256) (>= .cse2 256) (>= .cse3 256) (> 0 .cse4) (> 0 .cse5) (> 0 .cse6) (> 0 .cse7) (> 0 .cse8) (> 0 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241|) (>= .cse9 256) (>= .cse10 256) (>= .cse11 256) (>= .cse12 256) (> 0 .cse2) (>= .cse13 256) (let ((.cse14 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse18) .cse19) .cse20))) (< (+ (* .cse14 256) .cse15 .cse16 4294967295) (+ .cse17 (* .cse14 257) .cse15 .cse16))) (> 0 .cse3) (>= .cse21 256) (< 4294967295 (+ (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse22) .cse23) .cse24) .cse16)) (< (+ .cse17 (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse25) .cse4) .cse26) 257) .cse15 .cse16 255) 64771) (> 0 .cse0) (> 0 .cse26) (let ((.cse27 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse28) .cse29) .cse3))) (< (+ .cse27 .cse16 255) (+ (* .cse27 256) .cse15 .cse16))) (>= .cse20 256) (> 0 .cse13) (> 0 .cse30) (> 0 .cse31) (> 0 .cse32) (>= .cse33 256) (>= .cse34 256) (>= .cse19 256) (>= .cse8 256) (> 0 .cse28) (>= .cse35 256) (> 0 .cse36) (>= .cse37 256) (>= .cse30 256) (< (+ (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse12) .cse0) .cse38) 256) .cse15 .cse16 4294967295) 64771) (>= |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| 256) (let ((.cse39 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse32) .cse40) .cse2))) (< (+ .cse17 (* .cse39 257) .cse15 .cse16 255) (+ (* .cse39 256) .cse15 .cse16))) (> 0 .cse41) (>= .cse42 256) (> 0 .cse43) (> 0 .cse34) (> 0 .cse21) (< (+ (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse41) .cse1) |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241|) 256) .cse15 .cse16 4294967295) 0) (>= .cse36 256) (>= .cse44 256) (let ((.cse45 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse37) .cse46) .cse47))) (< (+ (* .cse45 256) .cse15 .cse16 4294967295) (+ .cse45 .cse16))) (>= .cse24 256) (> 0 .cse40) (> 0 .cse19) (> 0 .cse48) (> 0 .cse10) (> 0 .cse49) (>= .cse31 256) (> 0 .cse23) (> 0 .cse25) (>= .cse38 256) (>= .cse25 256) (> 0 .cse18) (< (+ (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse50) .cse6) .cse51) .cse16 255) 64771) (>= .cse52 256) (>= .cse28 256) (> 0 .cse52) (> 0 .cse35) (> 0 .cse29) (> 0 .cse9) (> 0 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241|) (> 0 .cse1) (< 4294967295 (+ (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse5) .cse35) .cse8) 256) .cse15 .cse16 (- 255))) (>= .cse26 256) (> 0 .cse53) (> 0 .cse54) (>= .cse46 256) (>= .cse32 256) (> 0 .cse50) (>= .cse50 256) (< 4294967295 (+ .cse17 (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse31) .cse7) .cse10) 257) .cse15 .cse16)) (> 0 .cse22) (>= .cse55 256) (> 0 .cse42) (> 0 .cse11) (>= .cse48 256) (> 0 .cse44) (>= .cse56 256) (let ((.cse57 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse33) .cse44) .cse11))) (< (+ .cse57 .cse16 255) (+ .cse17 (* .cse57 257) .cse15 .cse16))) (>= .cse49 256) (let ((.cse58 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse30) .cse48) .cse49))) (< (+ .cse17 (* .cse58 257) .cse15 .cse16 255) (+ .cse58 .cse16))) (> 0 |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241|) (>= .cse40 256) (< 4294967295 (+ (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse21) .cse56) .cse53) 256) .cse15 .cse16)) (>= .cse18 256) (> 0 .cse12) (>= .cse6 256) (>= .cse5 256) (> 0 .cse47) (> 0 .cse37) (> 0 .cse38) (>= .cse22 256) (>= .cse51 256) (>= .cse47 256) (let ((.cse59 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse43) .cse9) .cse52))) (< (+ .cse59 .cse16 255) (+ (* .cse59 256) .cse15 .cse16 (- 255)))) (>= |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_18_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| 256) (> 0 .cse24) (> 0 .cse56) (>= .cse43 256) (>= .cse41 256) (> 0 .cse20) (>= .cse53 256) (< (+ (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse55) .cse60) .cse13) .cse16 255) 0) (> 0 .cse33) (>= .cse7 256) (> 0 .cse60) (> 0 .cse55) (> 0 .cse51) (>= .cse54 256) (>= .cse23 256) (> 0 .cse46) (>= .cse4 256) (< (+ .cse17 (* (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| .cse36) |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_19_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241|) .cse34) 257) .cse15 .cse16 255) 0) (>= .cse29 256) (>= .cse60 256) (let ((.cse61 (+ (+ (+ |c_ULTIMATE.start_main_~s~0#1| |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241|) .cse54) .cse42))) (< (+ .cse17 (* .cse61 257) .cse15 .cse16 255) (+ (* .cse61 256) .cse15 .cse16 (- 255)))) (>= |aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~v~0#1_20_43_54_65_76_87_98_109_121_133_145_157_169_181_193_205_217_229_241| 256)))))))))))))))))))) is different from false [2023-02-17 06:47:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 0 trivial. 6 not checked. [2023-02-17 06:47:48,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598609486] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:47:48,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:47:48,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-02-17 06:47:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675175055] [2023-02-17 06:47:48,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:47:48,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 06:47:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:47:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 06:47:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=103, Unknown=10, NotChecked=26, Total=240 [2023-02-17 06:47:48,780 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:09,540 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-02-17 06:48:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 06:48:09,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 77.6s TimeCoverageRelationStatistics Valid=101, Invalid=103, Unknown=10, NotChecked=26, Total=240 [2023-02-17 06:48:09,541 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:09,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 2 Unchecked, 1.2s Time] [2023-02-17 06:48:09,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-02-17 06:48:09,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 06:48:09,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:48:09,742 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:898) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:772) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:346) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:391) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 48 more [2023-02-17 06:48:09,745 INFO L158 Benchmark]: Toolchain (without parser) took 200849.73ms. Allocated memory was 174.1MB in the beginning and 629.1MB in the end (delta: 455.1MB). Free memory was 136.8MB in the beginning and 467.1MB in the end (delta: -330.2MB). Peak memory consumption was 128.0MB. Max. memory is 16.1GB. [2023-02-17 06:48:09,746 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:48:09,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.74ms. Allocated memory is still 174.1MB. Free memory was 136.8MB in the beginning and 126.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:48:09,746 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.19ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 125.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:48:09,746 INFO L158 Benchmark]: Boogie Preprocessor took 12.41ms. Allocated memory is still 174.1MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:48:09,746 INFO L158 Benchmark]: RCFGBuilder took 160.82ms. Allocated memory is still 174.1MB. Free memory was 124.2MB in the beginning and 114.8MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:48:09,746 INFO L158 Benchmark]: TraceAbstraction took 200510.71ms. Allocated memory was 174.1MB in the beginning and 629.1MB in the end (delta: 455.1MB). Free memory was 114.3MB in the beginning and 467.1MB in the end (delta: -352.8MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. [2023-02-17 06:48:09,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.74ms. Allocated memory is still 174.1MB. Free memory was 136.8MB in the beginning and 126.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.19ms. Allocated memory is still 174.1MB. Free memory was 126.4MB in the beginning and 125.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.41ms. Allocated memory is still 174.1MB. Free memory was 125.2MB in the beginning and 124.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 160.82ms. Allocated memory is still 174.1MB. Free memory was 124.2MB in the beginning and 114.8MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 200510.71ms. Allocated memory was 174.1MB in the beginning and 629.1MB in the end (delta: 455.1MB). Free memory was 114.3MB in the beginning and 467.1MB in the end (delta: -352.8MB). Peak memory consumption was 104.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6ceef81d5d5c6ec4b435ae3bf6300a70928e11f3a8c1d376463323495e50f12 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:48:11,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:48:11,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:48:11,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:48:11,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:48:11,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:48:11,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:48:11,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:48:11,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:48:11,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:48:11,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:48:11,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:48:11,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:48:11,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:48:11,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:48:11,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:48:11,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:48:11,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:48:11,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:48:11,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:48:11,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:48:11,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:48:11,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:48:11,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:48:11,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:48:11,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:48:11,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:48:11,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:48:11,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:48:11,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:48:11,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:48:11,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:48:11,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:48:11,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:48:11,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:48:11,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:48:11,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:48:11,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:48:11,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:48:11,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:48:11,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:48:11,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-17 06:48:11,566 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:48:11,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:48:11,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:48:11,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:48:11,568 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:48:11,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:48:11,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:48:11,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:48:11,570 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:48:11,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:48:11,571 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:48:11,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:48:11,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:48:11,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:48:11,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:48:11,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:48:11,572 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 06:48:11,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 06:48:11,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 06:48:11,572 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:48:11,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:48:11,573 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:48:11,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:48:11,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:48:11,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:48:11,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:48:11,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:48:11,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:48:11,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:48:11,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:48:11,574 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 06:48:11,574 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 06:48:11,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:48:11,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:48:11,575 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:48:11,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:48:11,575 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 06:48:11,575 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:48:11,576 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6ceef81d5d5c6ec4b435ae3bf6300a70928e11f3a8c1d376463323495e50f12 [2023-02-17 06:48:11,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:48:11,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:48:11,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:48:11,860 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:48:11,860 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:48:11,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c [2023-02-17 06:48:12,957 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:48:13,138 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:48:13,139 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c [2023-02-17 06:48:13,157 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051268a21/e0d87c8335b54c978824044872bfee4d/FLAGfa2cb8627 [2023-02-17 06:48:13,170 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051268a21/e0d87c8335b54c978824044872bfee4d [2023-02-17 06:48:13,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:48:13,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:48:13,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:48:13,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:48:13,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:48:13,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122bae43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13, skipping insertion in model container [2023-02-17 06:48:13,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:48:13,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:48:13,289 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[557,570] [2023-02-17 06:48:13,292 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[613,626] [2023-02-17 06:48:13,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:48:13,299 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:48:13,308 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[557,570] [2023-02-17 06:48:13,309 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invariants/linear-inequality-inv-a.c[613,626] [2023-02-17 06:48:13,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:48:13,318 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:48:13,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13 WrapperNode [2023-02-17 06:48:13,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:48:13,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:48:13,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:48:13,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:48:13,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,341 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2023-02-17 06:48:13,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:48:13,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:48:13,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:48:13,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:48:13,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,369 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:48:13,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:48:13,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:48:13,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:48:13,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (1/1) ... [2023-02-17 06:48:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:48:13,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:48:13,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 06:48:13,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 06:48:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:48:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:48:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:48:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 06:48:13,480 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:48:13,481 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:48:13,608 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:48:13,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:48:13,615 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:48:13,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:48:13 BoogieIcfgContainer [2023-02-17 06:48:13,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:48:13,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:48:13,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:48:13,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:48:13,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:48:13" (1/3) ... [2023-02-17 06:48:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b40f223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:48:13, skipping insertion in model container [2023-02-17 06:48:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:48:13" (2/3) ... [2023-02-17 06:48:13,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b40f223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:48:13, skipping insertion in model container [2023-02-17 06:48:13,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:48:13" (3/3) ... [2023-02-17 06:48:13,635 INFO L112 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-a.c [2023-02-17 06:48:13,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:48:13,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-02-17 06:48:13,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:48:13,709 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=PETRI_NET, 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;@90019b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:48:13,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-02-17 06:48:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:48:13,719 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:13,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:48:13,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:13,725 INFO L85 PathProgramCache]: Analyzing trace with hash 889577263, now seen corresponding path program 1 times [2023-02-17 06:48:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365629677] [2023-02-17 06:48:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:48:13,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:13,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:13,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 06:48:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:48:13,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 06:48:13,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:48:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:13,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:48:13,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 06:48:13,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365629677] [2023-02-17 06:48:13,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365629677] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:48:13,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:48:13,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 06:48:13,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160493775] [2023-02-17 06:48:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:48:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 06:48:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 06:48:13,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 06:48:13,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:48:13,862 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:48:13,873 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2023-02-17 06:48:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 06:48:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 06:48:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:48:13,884 INFO L225 Difference]: With dead ends: 22 [2023-02-17 06:48:13,884 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 06:48:13,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 06:48:13,888 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:13,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:48:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 06:48:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 06:48:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 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) [2023-02-17 06:48:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-02-17 06:48:13,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2023-02-17 06:48:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:48:13,911 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-02-17 06:48:13,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-02-17 06:48:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:48:13,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:13,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:48:13,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-17 06:48:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:14,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash 889573419, now seen corresponding path program 1 times [2023-02-17 06:48:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:14,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150823806] [2023-02-17 06:48:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:48:14,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:14,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:14,121 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:14,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 06:48:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:48:14,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 06:48:14,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:48:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:14,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:48:14,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 06:48:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150823806] [2023-02-17 06:48:14,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150823806] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:48:14,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:48:14,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 06:48:14,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392462281] [2023-02-17 06:48:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:48:14,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 06:48:14,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 06:48:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 06:48:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:48:14,192 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 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) [2023-02-17 06:48:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:48:14,224 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-02-17 06:48:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 06:48:14,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-02-17 06:48:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:48:14,225 INFO L225 Difference]: With dead ends: 17 [2023-02-17 06:48:14,225 INFO L226 Difference]: Without dead ends: 15 [2023-02-17 06:48:14,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:48:14,227 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:14,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:48:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-17 06:48:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2023-02-17 06:48:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-17 06:48:14,230 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2023-02-17 06:48:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:48:14,231 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-17 06:48:14,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-02-17 06:48:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-17 06:48:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:48:14,231 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:14,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:48:14,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 06:48:14,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:14,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1807024099, now seen corresponding path program 1 times [2023-02-17 06:48:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:14,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735078529] [2023-02-17 06:48:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:48:14,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:14,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:14,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:14,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 06:48:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:48:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 06:48:14,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:48:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:14,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:48:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:14,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 06:48:14,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735078529] [2023-02-17 06:48:14,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735078529] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:48:14,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:48:14,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-17 06:48:14,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79926912] [2023-02-17 06:48:14,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:48:14,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 06:48:14,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 06:48:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 06:48:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 06:48:14,552 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:48:14,614 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2023-02-17 06:48:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 06:48:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 06:48:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:48:14,615 INFO L225 Difference]: With dead ends: 27 [2023-02-17 06:48:14,615 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 06:48:14,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:48:14,616 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:14,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 06:48:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 06:48:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2023-02-17 06:48:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-17 06:48:14,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2023-02-17 06:48:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:48:14,620 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-17 06:48:14,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-17 06:48:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 06:48:14,621 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:14,621 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:48:14,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 06:48:14,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:14,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:14,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1384984081, now seen corresponding path program 1 times [2023-02-17 06:48:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:14,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656765247] [2023-02-17 06:48:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:48:14,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:14,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:14,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:14,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 06:48:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:48:14,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 06:48:14,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:48:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:14,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:48:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:14,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 06:48:14,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656765247] [2023-02-17 06:48:14,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656765247] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:48:14,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:48:14,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-17 06:48:14,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042049250] [2023-02-17 06:48:14,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:48:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 06:48:14,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 06:48:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 06:48:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:48:14,991 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:48:15,507 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-02-17 06:48:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 06:48:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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 9 [2023-02-17 06:48:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:48:15,508 INFO L225 Difference]: With dead ends: 26 [2023-02-17 06:48:15,508 INFO L226 Difference]: Without dead ends: 18 [2023-02-17 06:48:15,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:48:15,510 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:15,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 06:48:15,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-17 06:48:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-02-17 06:48:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-17 06:48:15,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2023-02-17 06:48:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:48:15,514 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-17 06:48:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-02-17 06:48:15,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 06:48:15,515 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:15,515 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-02-17 06:48:15,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 06:48:15,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:15,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:15,716 INFO L85 PathProgramCache]: Analyzing trace with hash -13631957, now seen corresponding path program 2 times [2023-02-17 06:48:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:15,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513679722] [2023-02-17 06:48:15,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 06:48:15,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:15,722 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:15,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 06:48:15,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 06:48:15,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:48:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 06:48:15,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:48:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:17,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:48:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:17,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 06:48:17,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513679722] [2023-02-17 06:48:17,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513679722] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:48:17,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:48:17,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-17 06:48:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181716491] [2023-02-17 06:48:17,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:48:17,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 06:48:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 06:48:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 06:48:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2023-02-17 06:48:17,850 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:19,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:48:19,628 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2023-02-17 06:48:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 06:48:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 06:48:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:48:19,629 INFO L225 Difference]: With dead ends: 37 [2023-02-17 06:48:19,629 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 06:48:19,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=150, Invalid=230, Unknown=0, NotChecked=0, Total=380 [2023-02-17 06:48:19,631 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:19,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 06:48:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 06:48:19,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2023-02-17 06:48:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 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) [2023-02-17 06:48:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-17 06:48:19,638 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2023-02-17 06:48:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:48:19,638 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-17 06:48:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-17 06:48:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 06:48:19,639 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:19,639 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:48:19,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-17 06:48:19,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:19,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1963737105, now seen corresponding path program 2 times [2023-02-17 06:48:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:19,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519326688] [2023-02-17 06:48:19,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 06:48:19,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:19,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:19,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:19,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 06:48:19,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 06:48:19,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:48:19,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 06:48:19,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:48:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:35,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:48:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:48:36,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 06:48:36,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519326688] [2023-02-17 06:48:36,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519326688] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:48:36,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:48:36,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-17 06:48:36,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534396978] [2023-02-17 06:48:36,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:48:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 06:48:36,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 06:48:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 06:48:36,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=119, Unknown=4, NotChecked=0, Total=240 [2023-02-17 06:48:36,229 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:50,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-17 06:48:51,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-17 06:48:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:48:52,869 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2023-02-17 06:48:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 06:48:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-17 06:48:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:48:52,871 INFO L225 Difference]: With dead ends: 42 [2023-02-17 06:48:52,871 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 06:48:52,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=145, Invalid=152, Unknown=9, NotChecked=0, Total=306 [2023-02-17 06:48:52,872 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:48:52,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 26 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2023-02-17 06:48:52,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 06:48:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2023-02-17 06:48:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-02-17 06:48:52,876 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 13 [2023-02-17 06:48:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:48:52,877 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-02-17 06:48:52,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:48:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-02-17 06:48:52,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 06:48:52,877 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:48:52,877 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-02-17 06:48:52,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-17 06:48:53,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:53,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:48:53,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:48:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1418863403, now seen corresponding path program 3 times [2023-02-17 06:48:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 06:48:53,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864153131] [2023-02-17 06:48:53,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 06:48:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 06:48:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 06:48:53,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 06:48:53,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 06:48:53,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 06:48:53,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:48:53,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 06:48:53,115 INFO L286 TraceCheckSpWp]: Computing forward predicates...