./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/nla-digbench-scaling/bresenham-ll_valuebound20.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 cb384ff5c9201b9f90543357d3375f0a0ac9cc5fac01729f538d89799a1d7226 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:08:50,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:08:50,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:08:50,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:08:50,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:08:50,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:08:50,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:08:50,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:08:50,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:08:50,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:08:50,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:08:50,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:08:50,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:08:50,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:08:50,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:08:50,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:08:50,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:08:50,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:08:50,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:08:50,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:08:50,483 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:08:50,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:08:50,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:08:50,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:08:50,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:08:50,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:08:50,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:08:50,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:08:50,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:08:50,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:08:50,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:08:50,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:08:50,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:08:50,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:08:50,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:08:50,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:08:50,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:08:50,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:08:50,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:08:50,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:08:50,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:08:50,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:08:50,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:08:50,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:08:50,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:08:50,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:08:50,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:08:50,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:08:50,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:08:50,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:08:50,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:08:50,540 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:08:50,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:08:50,541 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:08:50,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:08:50,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:08:50,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:08:50,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:08:50,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:08:50,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:08:50,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:08:50,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:08:50,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:08:50,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:08:50,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:08:50,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:08:50,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:08:50,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:08:50,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:08:50,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:08:50,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:08:50,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:08:50,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:08:50,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:08:50,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:08:50,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:08:50,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb384ff5c9201b9f90543357d3375f0a0ac9cc5fac01729f538d89799a1d7226 [2022-07-21 03:08:50,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:08:50,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:08:50,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:08:50,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:08:50,854 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:08:50,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c [2022-07-21 03:08:50,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36a0b07c/23f0a48f3c414977a8aa6d7d00f08145/FLAGaab8be46a [2022-07-21 03:08:51,302 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:08:51,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c [2022-07-21 03:08:51,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36a0b07c/23f0a48f3c414977a8aa6d7d00f08145/FLAGaab8be46a [2022-07-21 03:08:51,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36a0b07c/23f0a48f3c414977a8aa6d7d00f08145 [2022-07-21 03:08:51,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:08:51,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:08:51,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:08:51,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:08:51,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:08:51,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:51,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453bff27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51, skipping insertion in model container [2022-07-21 03:08:51,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:51,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:08:51,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:08:51,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c[597,610] [2022-07-21 03:08:51,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:08:51,906 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:08:51,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c[597,610] [2022-07-21 03:08:51,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:08:51,994 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:08:51,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51 WrapperNode [2022-07-21 03:08:51,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:08:51,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:08:51,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:08:51,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:08:52,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,025 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-07-21 03:08:52,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:08:52,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:08:52,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:08:52,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:08:52,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:08:52,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:08:52,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:08:52,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:08:52,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (1/1) ... [2022-07-21 03:08:52,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:08:52,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:08:52,088 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) [2022-07-21 03:08:52,119 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 [2022-07-21 03:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 03:08:52,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 03:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:08:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:08:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:08:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:08:52,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:08:52,188 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:08:52,190 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:08:52,324 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:08:52,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:08:52,330 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:08:52,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:08:52 BoogieIcfgContainer [2022-07-21 03:08:52,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:08:52,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:08:52,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:08:52,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:08:52,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:08:51" (1/3) ... [2022-07-21 03:08:52,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0344aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:08:52, skipping insertion in model container [2022-07-21 03:08:52,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:08:51" (2/3) ... [2022-07-21 03:08:52,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0344aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:08:52, skipping insertion in model container [2022-07-21 03:08:52,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:08:52" (3/3) ... [2022-07-21 03:08:52,353 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound20.c [2022-07-21 03:08:52,364 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:08:52,364 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:08:52,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:08:52,407 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7481da07, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24bb1cc1 [2022-07-21 03:08:52,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:08:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 03:08:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 03:08:52,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:08:52,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:08:52,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:08:52,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:08:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2022-07-21 03:08:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:08:52,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520371423] [2022-07-21 03:08:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:52,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:08:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 03:08:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 03:08:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:08:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:08:52,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520371423] [2022-07-21 03:08:52,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520371423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:08:52,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:08:52,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:08:52,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428816409] [2022-07-21 03:08:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:08:52,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:08:52,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:08:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:08:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:08:52,602 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:08:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:08:52,620 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-07-21 03:08:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:08:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-21 03:08:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:08:52,632 INFO L225 Difference]: With dead ends: 51 [2022-07-21 03:08:52,633 INFO L226 Difference]: Without dead ends: 23 [2022-07-21 03:08:52,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:08:52,640 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-07-21 03:08:52,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:08:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-21 03:08:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-21 03:08:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 03:08:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-21 03:08:52,685 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-07-21 03:08:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:08:52,685 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-21 03:08:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:08:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-21 03:08:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 03:08:52,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:08:52,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:08:52,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 03:08:52,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:08:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:08:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2022-07-21 03:08:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:08:52,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842692600] [2022-07-21 03:08:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:08:52,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:08:52,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095665912] [2022-07-21 03:08:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:52,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:08:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:08:52,727 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) [2022-07-21 03:08:52,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:08:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:52,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 03:08:52,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:08:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:08:52,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:08:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:08:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842692600] [2022-07-21 03:08:52,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:08:52,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095665912] [2022-07-21 03:08:52,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095665912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:08:52,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:08:52,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 03:08:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645374967] [2022-07-21 03:08:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:08:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:08:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:08:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:08:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:08:52,867 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:08:52,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:08:52,943 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-21 03:08:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:08:52,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-21 03:08:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:08:52,945 INFO L225 Difference]: With dead ends: 35 [2022-07-21 03:08:52,946 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 03:08:52,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:08:52,947 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:08:52,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:08:52,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 03:08:52,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-07-21 03:08:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 03:08:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-21 03:08:52,954 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2022-07-21 03:08:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:08:52,955 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-21 03:08:52,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:08:52,956 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-21 03:08:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 03:08:52,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:08:52,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:08:52,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:08:53,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:08:53,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:08:53,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:08:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2022-07-21 03:08:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:08:53,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291276786] [2022-07-21 03:08:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:08:53,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:08:53,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261210946] [2022-07-21 03:08:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:53,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:08:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:08:53,205 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) [2022-07-21 03:08:53,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 03:08:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:53,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 03:08:53,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:08:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 03:08:53,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:08:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 03:08:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:08:53,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291276786] [2022-07-21 03:08:53,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:08:53,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261210946] [2022-07-21 03:08:53,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261210946] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:08:53,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:08:53,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2022-07-21 03:08:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956504349] [2022-07-21 03:08:53,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:08:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 03:08:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:08:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 03:08:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:08:53,593 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 03:08:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:08:54,082 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-07-21 03:08:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 03:08:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2022-07-21 03:08:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:08:54,084 INFO L225 Difference]: With dead ends: 44 [2022-07-21 03:08:54,084 INFO L226 Difference]: Without dead ends: 38 [2022-07-21 03:08:54,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-07-21 03:08:54,086 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 03:08:54,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 71 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 03:08:54,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-21 03:08:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-07-21 03:08:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 03:08:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-21 03:08:54,101 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2022-07-21 03:08:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:08:54,101 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-21 03:08:54,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 03:08:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-21 03:08:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 03:08:54,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:08:54,103 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:08:54,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 03:08:54,303 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,SelfDestructingSolverStorable2 [2022-07-21 03:08:54,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:08:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:08:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2022-07-21 03:08:54,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:08:54,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453392941] [2022-07-21 03:08:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:08:54,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:08:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185380048] [2022-07-21 03:08:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:54,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:08:54,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:08:54,323 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) [2022-07-21 03:08:54,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 03:08:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:54,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 03:08:54,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:08:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 03:08:54,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:08:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 03:08:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:08:55,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453392941] [2022-07-21 03:08:55,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:08:55,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185380048] [2022-07-21 03:08:55,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185380048] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:08:55,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:08:55,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-07-21 03:08:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648209153] [2022-07-21 03:08:55,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:08:55,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 03:08:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:08:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 03:08:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-21 03:08:55,043 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 03:08:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:08:55,637 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-07-21 03:08:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 03:08:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2022-07-21 03:08:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:08:55,639 INFO L225 Difference]: With dead ends: 56 [2022-07-21 03:08:55,639 INFO L226 Difference]: Without dead ends: 48 [2022-07-21 03:08:55,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 03:08:55,641 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 03:08:55,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-07-21 03:08:55,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-21 03:08:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2022-07-21 03:08:55,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 03:08:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-21 03:08:55,650 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 35 [2022-07-21 03:08:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:08:55,650 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-21 03:08:55,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 03:08:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-21 03:08:55,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 03:08:55,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:08:55,652 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:08:55,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:08:55,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:08:55,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:08:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:08:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash 546586445, now seen corresponding path program 1 times [2022-07-21 03:08:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:08:55,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093266799] [2022-07-21 03:08:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:55,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:08:55,880 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:08:55,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357211330] [2022-07-21 03:08:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:08:55,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:08:55,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:08:55,882 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) [2022-07-21 03:08:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 03:08:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:08:55,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 03:08:55,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:08:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 03:08:59,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:08:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 03:08:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:08:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093266799] [2022-07-21 03:08:59,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:08:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357211330] [2022-07-21 03:08:59,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357211330] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:08:59,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:08:59,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-07-21 03:08:59,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420542139] [2022-07-21 03:08:59,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:08:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 03:08:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:08:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 03:08:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:08:59,949 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-21 03:09:01,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:06,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:08,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:10,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:12,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:14,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:09:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:09:16,300 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-07-21 03:09:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 03:09:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2022-07-21 03:09:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:09:16,301 INFO L225 Difference]: With dead ends: 52 [2022-07-21 03:09:16,301 INFO L226 Difference]: Without dead ends: 46 [2022-07-21 03:09:16,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-07-21 03:09:16,302 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:09:16,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 12.1s Time] [2022-07-21 03:09:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-21 03:09:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2022-07-21 03:09:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:09:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-07-21 03:09:16,312 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 44 [2022-07-21 03:09:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:09:16,312 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-07-21 03:09:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-21 03:09:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-07-21 03:09:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 03:09:16,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:09:16,314 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:09:16,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 03:09:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:16,514 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:09:16,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:09:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1258851889, now seen corresponding path program 1 times [2022-07-21 03:09:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:09:16,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309209209] [2022-07-21 03:09:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:09:16,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:09:16,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414739221] [2022-07-21 03:09:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:16,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:16,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:09:16,532 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:09:16,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 03:09:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:09:16,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:09:16,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:09:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 03:09:16,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:09:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 03:09:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:09:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309209209] [2022-07-21 03:09:16,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:09:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414739221] [2022-07-21 03:09:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414739221] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:09:16,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:09:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-21 03:09:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421784594] [2022-07-21 03:09:16,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:09:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 03:09:16,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:09:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 03:09:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-21 03:09:16,846 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 03:09:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:09:17,060 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-07-21 03:09:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 03:09:17,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 44 [2022-07-21 03:09:17,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:09:17,062 INFO L225 Difference]: With dead ends: 61 [2022-07-21 03:09:17,062 INFO L226 Difference]: Without dead ends: 55 [2022-07-21 03:09:17,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-07-21 03:09:17,063 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:09:17,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 136 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:09:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-21 03:09:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2022-07-21 03:09:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 03:09:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-07-21 03:09:17,076 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2022-07-21 03:09:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:09:17,076 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-07-21 03:09:17,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 03:09:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-07-21 03:09:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 03:09:17,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:09:17,078 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:09:17,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 03:09:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:17,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:09:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:09:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1465806458, now seen corresponding path program 2 times [2022-07-21 03:09:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:09:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264332673] [2022-07-21 03:09:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:09:17,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:09:17,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668575037] [2022-07-21 03:09:17,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 03:09:17,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:09:17,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:09:17,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 03:09:17,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 03:09:17,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:09:17,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:09:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:09:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 03:09:17,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:09:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 03:09:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:09:17,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264332673] [2022-07-21 03:09:17,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:09:17,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668575037] [2022-07-21 03:09:17,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668575037] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:09:17,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:09:17,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-21 03:09:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989252074] [2022-07-21 03:09:17,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:09:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 03:09:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:09:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 03:09:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:09:17,627 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-21 03:09:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:09:17,835 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2022-07-21 03:09:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 03:09:17,836 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 53 [2022-07-21 03:09:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:09:17,837 INFO L225 Difference]: With dead ends: 74 [2022-07-21 03:09:17,837 INFO L226 Difference]: Without dead ends: 68 [2022-07-21 03:09:17,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-21 03:09:17,838 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:09:17,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 110 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:09:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-21 03:09:17,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2022-07-21 03:09:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:09:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-07-21 03:09:17,857 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 53 [2022-07-21 03:09:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:09:17,858 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-07-21 03:09:17,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-21 03:09:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-07-21 03:09:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 03:09:17,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:09:17,862 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:09:17,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 03:09:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:18,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:09:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:09:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 3 times [2022-07-21 03:09:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:09:18,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966306606] [2022-07-21 03:09:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:09:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:09:18,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:09:18,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634409746] [2022-07-21 03:09:18,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 03:09:18,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:09:18,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:09:18,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:09:18,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 03:09:18,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 03:09:18,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:09:18,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-21 03:09:18,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:09:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 03:09:29,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:10:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 03:10:03,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:10:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966306606] [2022-07-21 03:10:03,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:10:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634409746] [2022-07-21 03:10:03,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634409746] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:10:03,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:10:03,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-07-21 03:10:03,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74026640] [2022-07-21 03:10:03,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:10:03,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 03:10:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:10:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 03:10:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=496, Unknown=7, NotChecked=0, Total=600 [2022-07-21 03:10:03,130 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 03:10:24,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:10:26,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:10:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:10:26,466 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2022-07-21 03:10:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 03:10:26,467 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 53 [2022-07-21 03:10:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:10:26,467 INFO L225 Difference]: With dead ends: 62 [2022-07-21 03:10:26,467 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 03:10:26,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=253, Invalid=1146, Unknown=7, NotChecked=0, Total=1406 [2022-07-21 03:10:26,469 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-21 03:10:26,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 204 Invalid, 0 Unknown, 58 Unchecked, 5.2s Time] [2022-07-21 03:10:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 03:10:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 03:10:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:10:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 03:10:26,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-07-21 03:10:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:10:26,470 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 03:10:26,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-21 03:10:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 03:10:26,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 03:10:26,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:10:26,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 03:10:26,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:10:26,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 03:10:31,447 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 03:10:31,447 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 20) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2022-07-21 03:10:31,447 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-21 03:10:31,447 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-21 03:10:31,447 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L902 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2022-07-21 03:10:31,448 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse0 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)) (let ((.cse1 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse1 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse2 .cse0)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ .cse1 .cse2 .cse0)) (<= |ULTIMATE.start_main_~Y~0#1| 20))))) [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (and (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= |ULTIMATE.start_main_~X~0#1| 20) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 20) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2)) (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 03:10:31,448 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) .cse0)) (<= |ULTIMATE.start_main_~X~0#1| 20) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 20) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2)) (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))))) [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-07-21 03:10:31,449 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-21 03:10:31,452 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-07-21 03:10:31,454 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:10:31,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:10:31 BoogieIcfgContainer [2022-07-21 03:10:31,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:10:31,470 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:10:31,470 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:10:31,470 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:10:31,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:08:52" (3/4) ... [2022-07-21 03:10:31,472 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 03:10:31,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-21 03:10:31,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 03:10:31,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-21 03:10:31,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 03:10:31,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 03:10:31,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 03:10:31,516 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:10:31,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:10:31,517 INFO L158 Benchmark]: Toolchain (without parser) took 99787.04ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 35.4MB in the beginning and 48.0MB in the end (delta: -12.6MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2022-07-21 03:10:31,517 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.8MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:10:31,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.43ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.5MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 03:10:31,518 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.43ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 38.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:10:31,518 INFO L158 Benchmark]: Boogie Preprocessor took 32.90ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 37.1MB in the end (delta: 998.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:10:31,518 INFO L158 Benchmark]: RCFGBuilder took 271.22ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 27.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 03:10:31,519 INFO L158 Benchmark]: TraceAbstraction took 99136.66ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 26.9MB in the beginning and 50.9MB in the end (delta: -24.1MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-07-21 03:10:31,519 INFO L158 Benchmark]: Witness Printer took 46.28ms. Allocated memory is still 83.9MB. Free memory was 50.9MB in the beginning and 48.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 03:10:31,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.8MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.43ms. Allocated memory is still 56.6MB. Free memory was 35.2MB in the beginning and 39.5MB in the end (delta: -4.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.43ms. Allocated memory is still 56.6MB. Free memory was 39.5MB in the beginning and 38.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.90ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 37.1MB in the end (delta: 998.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 271.22ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 27.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 99136.66ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 26.9MB in the beginning and 50.9MB in the end (delta: -24.1MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Witness Printer took 46.28ms. Allocated memory is still 83.9MB. Free memory was 50.9MB in the beginning and 48.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 99.1s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 18.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 739 SdHoareTripleChecker+Invalid, 18.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 114 IncrementalHoareTripleChecker+Unchecked, 576 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1218 IncrementalHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 163 mSDtfsCounter, 1218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 431 SyntacticMatches, 6 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 49.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=7, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 27 PreInvPairs, 51 NumberOfFragments, 211 HoareAnnotationTreeSize, 27 FomulaSimplifications, 504 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5256 FormulaSimplificationTreeSizeReductionInter, 4.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 50.4s InterpolantComputationTime, 295 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 538 ConstructedInterpolants, 6 QuantifiedInterpolants, 3453 SizeOfPredicates, 44 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 340/426 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((X * y * 2 + X + v == Y * x * 2 + 2 * Y && X <= 20) && 0 <= Y) && Y <= 20) && 0 <= X) && (x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 2 * y + X * y * 2 == 2 * (x * y))) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 03:10:31,747 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 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE