./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_valuebound1.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 1e1d72742850b95338b71e8d041fa264ac4d7956cbe86d6603297a369e94cb76 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 15:44:08,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 15:44:08,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 15:44:08,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 15:44:08,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 15:44:08,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 15:44:08,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 15:44:08,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 15:44:08,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 15:44:08,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 15:44:08,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 15:44:08,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 15:44:08,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 15:44:08,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 15:44:08,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 15:44:08,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 15:44:08,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 15:44:08,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 15:44:08,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 15:44:08,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 15:44:08,764 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 15:44:08,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 15:44:08,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 15:44:08,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 15:44:08,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 15:44:08,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 15:44:08,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 15:44:08,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 15:44:08,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 15:44:08,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 15:44:08,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 15:44:08,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 15:44:08,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 15:44:08,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 15:44:08,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 15:44:08,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 15:44:08,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 15:44:08,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 15:44:08,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 15:44:08,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 15:44:08,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 15:44:08,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 15:44:08,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 15:44:08,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 15:44:08,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 15:44:08,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 15:44:08,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 15:44:08,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 15:44:08,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 15:44:08,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 15:44:08,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 15:44:08,819 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 15:44:08,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 15:44:08,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 15:44:08,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 15:44:08,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 15:44:08,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 15:44:08,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 15:44:08,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 15:44:08,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 15:44:08,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 15:44:08,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 15:44:08,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 15:44:08,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 15:44:08,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 15:44:08,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 15:44:08,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 15:44:08,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:44:08,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 15:44:08,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 15:44:08,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 15:44:08,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 15:44:08,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 15:44:08,824 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 15:44:08,824 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 15:44:08,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 15:44:08,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1d72742850b95338b71e8d041fa264ac4d7956cbe86d6603297a369e94cb76 [2022-07-22 15:44:09,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 15:44:09,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 15:44:09,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 15:44:09,069 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 15:44:09,070 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 15:44:09,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2022-07-22 15:44:09,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb67dd02/fff9bc515486408097446d19e4657829/FLAG933b7ea86 [2022-07-22 15:44:09,562 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 15:44:09,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2022-07-22 15:44:09,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb67dd02/fff9bc515486408097446d19e4657829/FLAG933b7ea86 [2022-07-22 15:44:09,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb67dd02/fff9bc515486408097446d19e4657829 [2022-07-22 15:44:09,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 15:44:09,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 15:44:09,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 15:44:09,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 15:44:09,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 15:44:09,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d14c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09, skipping insertion in model container [2022-07-22 15:44:09,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 15:44:09,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 15:44:09,743 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_valuebound1.c[597,610] [2022-07-22 15:44:09,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:44:09,765 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 15:44:09,775 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_valuebound1.c[597,610] [2022-07-22 15:44:09,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 15:44:09,793 INFO L208 MainTranslator]: Completed translation [2022-07-22 15:44:09,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09 WrapperNode [2022-07-22 15:44:09,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 15:44:09,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 15:44:09,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 15:44:09,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 15:44:09,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,821 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-07-22 15:44:09,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 15:44:09,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 15:44:09,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 15:44:09,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 15:44:09,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 15:44:09,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 15:44:09,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 15:44:09,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 15:44:09,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (1/1) ... [2022-07-22 15:44:09,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 15:44:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:44:09,866 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) [2022-07-22 15:44:09,867 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 [2022-07-22 15:44:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 15:44:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 15:44:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 15:44:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 15:44:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 15:44:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 15:44:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 15:44:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 15:44:09,945 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 15:44:09,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 15:44:10,149 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 15:44:10,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 15:44:10,154 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 15:44:10,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:44:10 BoogieIcfgContainer [2022-07-22 15:44:10,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 15:44:10,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 15:44:10,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 15:44:10,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 15:44:10,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:44:09" (1/3) ... [2022-07-22 15:44:10,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157497f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:44:10, skipping insertion in model container [2022-07-22 15:44:10,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:44:09" (2/3) ... [2022-07-22 15:44:10,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157497f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:44:10, skipping insertion in model container [2022-07-22 15:44:10,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:44:10" (3/3) ... [2022-07-22 15:44:10,172 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.c [2022-07-22 15:44:10,196 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 15:44:10,197 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 15:44:10,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 15:44:10,264 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@187455c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b12269c [2022-07-22 15:44:10,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 15:44:10,275 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) [2022-07-22 15:44:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 15:44:10,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:44:10,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:44:10,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:44:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:44:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2022-07-22 15:44:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:44:10,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202847501] [2022-07-22 15:44:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:44:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 15:44:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 15:44:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 15:44:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:44:10,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202847501] [2022-07-22 15:44:10,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202847501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:44:10,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:44:10,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 15:44:10,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592963392] [2022-07-22 15:44:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:44:10,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 15:44:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:44:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 15:44:10,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 15:44:10,501 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) [2022-07-22 15:44:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:44:10,521 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-07-22 15:44:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 15:44:10,524 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 [2022-07-22 15:44:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:44:10,530 INFO L225 Difference]: With dead ends: 51 [2022-07-22 15:44:10,531 INFO L226 Difference]: Without dead ends: 23 [2022-07-22 15:44:10,534 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 [2022-07-22 15:44:10,537 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 [2022-07-22 15:44:10,538 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] [2022-07-22 15:44:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-22 15:44:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-22 15:44:10,578 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) [2022-07-22 15:44:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-22 15:44:10,581 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-07-22 15:44:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:44:10,581 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-22 15:44:10,583 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) [2022-07-22 15:44:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-22 15:44:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 15:44:10,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:44:10,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 15:44:10,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 15:44:10,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:44:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:44:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2022-07-22 15:44:10,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:44:10,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304885825] [2022-07-22 15:44:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:10,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:44:10,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:44:10,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434144520] [2022-07-22 15:44:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:10,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:44:10,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:44:10,636 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) [2022-07-22 15:44:10,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 15:44:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:10,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 15:44:10,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:44:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 15:44:10,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 15:44:10,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:44:10,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304885825] [2022-07-22 15:44:10,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:44:10,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434144520] [2022-07-22 15:44:10,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434144520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 15:44:10,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 15:44:10,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 15:44:10,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720636121] [2022-07-22 15:44:10,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 15:44:10,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 15:44:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:44:10,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 15:44:10,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:44:10,851 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) [2022-07-22 15:44:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:44:10,950 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-22 15:44:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:44:10,953 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 [2022-07-22 15:44:10,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:44:10,955 INFO L225 Difference]: With dead ends: 35 [2022-07-22 15:44:10,955 INFO L226 Difference]: Without dead ends: 31 [2022-07-22 15:44:10,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:44:10,957 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:44:10,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:44:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-22 15:44:10,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-07-22 15:44:10,963 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) [2022-07-22 15:44:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-22 15:44:10,964 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2022-07-22 15:44:10,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:44:10,966 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-22 15:44:10,966 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) [2022-07-22 15:44:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-22 15:44:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 15:44:10,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:44:10,967 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] [2022-07-22 15:44:10,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 15:44:11,180 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 [2022-07-22 15:44:11,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:44:11,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:44:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2022-07-22 15:44:11,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:44:11,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091549073] [2022-07-22 15:44:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:11,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:44:11,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:44:11,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730921670] [2022-07-22 15:44:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:11,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:44:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:44:11,198 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) [2022-07-22 15:44:11,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 15:44:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:11,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 15:44:11,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:44:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 15:44:11,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:44:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 15:44:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:44:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091549073] [2022-07-22 15:44:11,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:44:11,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730921670] [2022-07-22 15:44:11,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730921670] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:44:11,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:44:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2022-07-22 15:44:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10101483] [2022-07-22 15:44:11,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:44:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 15:44:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:44:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 15:44:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-22 15:44:11,706 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-22 15:44:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:44:12,170 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-07-22 15:44:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 15:44:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2022-07-22 15:44:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:44:12,172 INFO L225 Difference]: With dead ends: 62 [2022-07-22 15:44:12,172 INFO L226 Difference]: Without dead ends: 34 [2022-07-22 15:44:12,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-07-22 15:44:12,174 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 15:44:12,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 77 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 15:44:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-22 15:44:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-07-22 15:44:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 15:44:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-07-22 15:44:12,185 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2022-07-22 15:44:12,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:44:12,186 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-07-22 15:44:12,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-22 15:44:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-07-22 15:44:12,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 15:44:12,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:44:12,188 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] [2022-07-22 15:44:12,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 15:44:12,388 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 [2022-07-22 15:44:12,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:44:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:44:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2022-07-22 15:44:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:44:12,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190497730] [2022-07-22 15:44:12,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:12,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:44:12,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:44:12,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733221470] [2022-07-22 15:44:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:12,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:44:12,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:44:12,434 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) [2022-07-22 15:44:12,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 15:44:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:12,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 15:44:12,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:44:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 15:44:12,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:44:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 15:44:13,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:44:13,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190497730] [2022-07-22 15:44:13,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:44:13,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733221470] [2022-07-22 15:44:13,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733221470] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:44:13,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:44:13,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2022-07-22 15:44:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661572605] [2022-07-22 15:44:13,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:44:13,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 15:44:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:44:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 15:44:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-07-22 15:44:13,628 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 20 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-22 15:44:17,017 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 [] [2022-07-22 15:44:19,314 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 [] [2022-07-22 15:44:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:44:19,415 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-07-22 15:44:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 15:44:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 20 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 35 [2022-07-22 15:44:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:44:19,417 INFO L225 Difference]: With dead ends: 51 [2022-07-22 15:44:19,417 INFO L226 Difference]: Without dead ends: 43 [2022-07-22 15:44:19,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 15:44:19,420 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-22 15:44:19,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 141 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 336 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-07-22 15:44:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-22 15:44:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-07-22 15:44:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 15:44:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-07-22 15:44:19,438 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 35 [2022-07-22 15:44:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:44:19,438 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-07-22 15:44:19,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 20 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-22 15:44:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-07-22 15:44:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 15:44:19,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:44:19,444 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] [2022-07-22 15:44:19,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 15:44:19,668 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 [2022-07-22 15:44:19,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:44:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:44:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 1 times [2022-07-22 15:44:19,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:44:19,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839907121] [2022-07-22 15:44:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:19,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:44:19,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:44:19,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702287944] [2022-07-22 15:44:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:19,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:44:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:44:19,685 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) [2022-07-22 15:44:19,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 15:44:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 15:44:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 15:44:19,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:44:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 15:44:19,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:44:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 15:44:19,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:44:19,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839907121] [2022-07-22 15:44:19,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:44:19,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702287944] [2022-07-22 15:44:19,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702287944] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:44:19,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:44:19,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-07-22 15:44:19,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87503879] [2022-07-22 15:44:19,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:44:19,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 15:44:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:44:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 15:44:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 15:44:19,851 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-22 15:44:19,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:44:19,928 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2022-07-22 15:44:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 15:44:19,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 53 [2022-07-22 15:44:19,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:44:19,930 INFO L225 Difference]: With dead ends: 69 [2022-07-22 15:44:19,930 INFO L226 Difference]: Without dead ends: 54 [2022-07-22 15:44:19,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 15:44:19,931 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:44:19,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 79 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:44:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-22 15:44:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-07-22 15:44:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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) [2022-07-22 15:44:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2022-07-22 15:44:19,942 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 53 [2022-07-22 15:44:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:44:19,943 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2022-07-22 15:44:19,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-22 15:44:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2022-07-22 15:44:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 15:44:19,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 15:44:19,944 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] [2022-07-22 15:44:19,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 15:44:20,170 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 [2022-07-22 15:44:20,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 15:44:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 15:44:20,171 INFO L85 PathProgramCache]: Analyzing trace with hash -396725760, now seen corresponding path program 2 times [2022-07-22 15:44:20,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 15:44:20,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043223122] [2022-07-22 15:44:20,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 15:44:20,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 15:44:20,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 15:44:20,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955959614] [2022-07-22 15:44:20,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 15:44:20,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 15:44:20,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 15:44:20,183 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) [2022-07-22 15:44:20,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 15:44:20,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 15:44:20,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 15:44:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 15:44:20,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 15:44:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 15:44:20,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 15:44:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 15:44:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 15:44:20,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043223122] [2022-07-22 15:44:20,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 15:44:20,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955959614] [2022-07-22 15:44:20,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955959614] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 15:44:20,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 15:44:20,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-22 15:44:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763053288] [2022-07-22 15:44:20,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 15:44:20,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 15:44:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 15:44:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 15:44:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-22 15:44:20,448 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) [2022-07-22 15:44:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 15:44:20,516 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-07-22 15:44:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 15:44:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) Word has length 53 [2022-07-22 15:44:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 15:44:20,517 INFO L225 Difference]: With dead ends: 56 [2022-07-22 15:44:20,517 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 15:44:20,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-07-22 15:44:20,518 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 15:44:20,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 61 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 15:44:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 15:44:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 15:44:20,519 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) [2022-07-22 15:44:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 15:44:20,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-07-22 15:44:20,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 15:44:20,519 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 15:44:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 10 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) [2022-07-22 15:44:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 15:44:20,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 15:44:20,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 15:44:20,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 15:44:20,731 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 [2022-07-22 15:44:20,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 15:44:22,090 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 15:44:22,090 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 1) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2022-07-22 15:44:22,090 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-22 15:44:22,090 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-22 15:44:22,090 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-22 15:44:22,090 INFO L902 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2022-07-22 15:44:22,091 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (let ((.cse0 (* 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|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (= (+ (* (* |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 .cse1)) (<= |ULTIMATE.start_main_~Y~0#1| 1) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 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|))) (+ .cse0 .cse2 .cse1)) (<= 0 |ULTIMATE.start_main_~X~0#1|))) (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse1 (+ |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)))) [2022-07-22 15:44:22,091 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-07-22 15:44:22,091 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-07-22 15:44:22,091 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-07-22 15:44:22,091 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 15:44:22,091 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse10 (* |ULTIMATE.start_main_~Y~0#1| 4)) (.cse5 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse9 (+ (* (* |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|)) (.cse11 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse4 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse8 (= .cse9 (+ .cse11 .cse4))) (.cse0 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse6 (<= 0 |ULTIMATE.start_main_~X~0#1|)) (.cse13 (<= (div |ULTIMATE.start_main_~v~0#1| (- 2)) |ULTIMATE.start_main_~Y~0#1|)) (.cse7 (= .cse10 .cse5)) (.cse12 (< .cse4 |ULTIMATE.start_main_~X~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~Y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~X~0#1| 1)) (.cse14 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~y~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= .cse4 .cse5) .cse6 (= |ULTIMATE.start_main_~x~0#1| 0)) (and (= |ULTIMATE.start_main_~yx~0#1| |ULTIMATE.start_main_~Y~0#1|) .cse7 .cse8 (= .cse9 (+ .cse10 .cse11)) (= |ULTIMATE.start_main_~xy~0#1| 0) .cse12 .cse2) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse8 .cse0 .cse1 .cse2 (= (+ |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|))) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse11 .cse4)) .cse6 .cse13) (and .cse0 (= .cse10 (+ |ULTIMATE.start_main_~v~0#1| (* 3 |ULTIMATE.start_main_~X~0#1|))) .cse2 .cse14 (= |ULTIMATE.start_main_~y~0#1| 1) .cse6 .cse13) (and .cse7 .cse12 (= (+ |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|) .cse4)) .cse1 .cse2 .cse14 .cse3)))) [2022-07-22 15:44:22,091 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 15:44:22,092 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-07-22 15:44:22,092 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 15:44:22,092 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse11 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse12 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse3 (+ (* .cse12 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse4 (* .cse11 2)) (.cse5 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse1 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse0 (* |ULTIMATE.start_main_~Y~0#1| 4)) (.cse2 (= .cse3 (+ .cse4 .cse5))) (.cse7 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse8 (= (+ |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|) .cse5))) (.cse9 (<= 0 |ULTIMATE.start_main_~Y~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~X~0#1| 1)) (.cse10 (<= 0 |ULTIMATE.start_main_~X~0#1|)) (.cse13 (<= (div |ULTIMATE.start_main_~v~0#1| (- 2)) |ULTIMATE.start_main_~Y~0#1|))) (or (and (= |ULTIMATE.start_main_~yx~0#1| |ULTIMATE.start_main_~Y~0#1|) (= .cse0 .cse1) .cse2 (= .cse3 (+ .cse0 .cse4)) (= |ULTIMATE.start_main_~xy~0#1| 0) (< .cse5 |ULTIMATE.start_main_~X~0#1|) .cse6) (and .cse7 .cse8 .cse9 .cse6 (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse5 .cse1) .cse10 (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)) (and (<= .cse11 |ULTIMATE.start_main_~yx~0#1|) .cse7 .cse8 (= .cse0 (+ |ULTIMATE.start_main_~v~0#1| (* 3 |ULTIMATE.start_main_~X~0#1|))) .cse6 (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (<= |ULTIMATE.start_main_~xy~0#1| .cse12) .cse10 .cse13) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) .cse2 .cse7 .cse8 .cse9 .cse6 (= (+ |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|))) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5)) .cse10 .cse13))))) [2022-07-22 15:44:22,092 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-07-22 15:44:22,092 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-07-22 15:44:22,092 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-07-22 15:44:22,093 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-07-22 15:44:22,093 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-07-22 15:44:22,093 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-07-22 15:44:22,093 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-07-22 15:44:22,093 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-07-22 15:44:22,093 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-07-22 15:44:22,093 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-07-22 15:44:22,094 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-22 15:44:22,096 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-07-22 15:44:22,097 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 15:44:22,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:44:22 BoogieIcfgContainer [2022-07-22 15:44:22,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 15:44:22,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 15:44:22,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 15:44:22,112 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 15:44:22,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:44:10" (3/4) ... [2022-07-22 15:44:22,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 15:44:22,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-22 15:44:22,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-22 15:44:22,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-22 15:44:22,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 15:44:22,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 15:44:22,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 15:44:22,150 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 15:44:22,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 15:44:22,151 INFO L158 Benchmark]: Toolchain (without parser) took 12557.60ms. Allocated memory was 102.8MB in the beginning and 163.6MB in the end (delta: 60.8MB). Free memory was 74.2MB in the beginning and 75.9MB in the end (delta: -1.7MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,151 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 15:44:22,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.48ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 74.0MB in the beginning and 111.8MB in the end (delta: -37.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.72ms. Allocated memory is still 136.3MB. Free memory was 111.8MB in the beginning and 110.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,152 INFO L158 Benchmark]: Boogie Preprocessor took 14.58ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 109.2MB in the end (delta: 754.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,152 INFO L158 Benchmark]: RCFGBuilder took 319.07ms. Allocated memory is still 136.3MB. Free memory was 109.2MB in the beginning and 98.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,153 INFO L158 Benchmark]: TraceAbstraction took 11953.76ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 98.3MB in the beginning and 79.1MB in the end (delta: 19.2MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,153 INFO L158 Benchmark]: Witness Printer took 38.27ms. Allocated memory is still 163.6MB. Free memory was 78.0MB in the beginning and 75.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 15:44:22,155 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.48ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 74.0MB in the beginning and 111.8MB in the end (delta: -37.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.72ms. Allocated memory is still 136.3MB. Free memory was 111.8MB in the beginning and 110.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.58ms. Allocated memory is still 136.3MB. Free memory was 110.0MB in the beginning and 109.2MB in the end (delta: 754.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.07ms. Allocated memory is still 136.3MB. Free memory was 109.2MB in the beginning and 98.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11953.76ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 98.3MB in the beginning and 79.1MB in the end (delta: 19.2MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * Witness Printer took 38.27ms. Allocated memory is still 163.6MB. Free memory was 78.0MB in the beginning and 75.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: 11.9s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 459 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 332 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 810 IncrementalHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 127 mSDtfsCounter, 810 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 299 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=5, InterpolantAutomatonStates: 63, 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, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 28 PreInvPairs, 46 NumberOfFragments, 545 HoareAnnotationTreeSize, 28 FomulaSimplifications, 155 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 604 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 366 ConstructedInterpolants, 0 QuantifiedInterpolants, 1898 SizeOfPredicates, 21 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 251/294 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: (((((((((Y <= 1 && 0 <= Y) && X <= 1) && y == 0) && 2 * Y == X + v) && 0 <= X) && x == 0) || ((((((yx == Y && Y * 4 == X + v) && X * y * 2 + X + v == Y * x * 2 + 2 * Y) && X * y * 2 + X + v == Y * 4 + Y * x * 2) && xy == 0) && 2 * Y < X) && X <= 1)) || (((((((2 <= x && X * y * 2 + X + v == Y * x * 2 + 2 * Y) && Y <= 1) && 0 <= Y) && X <= 1) && X + v + 2 * (x * y) == 2 * y + Y * x * 2 + 2 * Y) && 0 <= X) && v / -2 <= Y)) || ((((((Y <= 1 && Y * 4 == v + 3 * X) && X <= 1) && x == 1) && y == 1) && 0 <= X) && v / -2 <= Y)) || ((((((Y * 4 == X + v && 2 * Y < X) && X + v + 2 * xy == 2 * yx + 2 * Y) && 0 <= Y) && X <= 1) && x == 1) && y == 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-22 15:44:22,191 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