./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/prod4br-ll_valuebound2.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 deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 13:45:54,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 13:45:54,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 13:45:54,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 13:45:54,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 13:45:54,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 13:45:54,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 13:45:54,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 13:45:54,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 13:45:54,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 13:45:54,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 13:45:54,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 13:45:54,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 13:45:54,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 13:45:54,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 13:45:54,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 13:45:54,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 13:45:54,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 13:45:54,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 13:45:54,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 13:45:54,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 13:45:54,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 13:45:54,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 13:45:54,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 13:45:54,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 13:45:54,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 13:45:54,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 13:45:54,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 13:45:54,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 13:45:54,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 13:45:54,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 13:45:54,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 13:45:54,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 13:45:54,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 13:45:54,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 13:45:54,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 13:45:54,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 13:45:54,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 13:45:54,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 13:45:54,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 13:45:54,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 13:45:54,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 13:45:54,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 13:45:54,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 13:45:54,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 13:45:54,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 13:45:54,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 13:45:54,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 13:45:54,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 13:45:54,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 13:45:54,852 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 13:45:54,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 13:45:54,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 13:45:54,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 13:45:54,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 13:45:54,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 13:45:54,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 13:45:54,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 13:45:54,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 13:45:54,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 13:45:54,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 13:45:54,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 13:45:54,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 13:45:54,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 13:45:54,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 13:45:54,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 13:45:54,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 13:45:54,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 13:45:54,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 13:45:54,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 13:45:54,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 13:45:54,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 13:45:54,856 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 13:45:54,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 13:45:54,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 13:45:54,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 13:45:54,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deafb53b6c5560bead535ea0c1ac7bb85be5c959b9a13b21177e05987440264a [2021-12-17 13:45:55,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 13:45:55,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 13:45:55,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 13:45:55,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 13:45:55,039 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 13:45:55,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2021-12-17 13:45:55,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088e27fc9/3cd86803e1da40c3a5fb623374ffd117/FLAGfb8ac4928 [2021-12-17 13:45:55,384 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 13:45:55,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound2.c [2021-12-17 13:45:55,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088e27fc9/3cd86803e1da40c3a5fb623374ffd117/FLAGfb8ac4928 [2021-12-17 13:45:55,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/088e27fc9/3cd86803e1da40c3a5fb623374ffd117 [2021-12-17 13:45:55,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 13:45:55,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 13:45:55,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 13:45:55,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 13:45:55,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 13:45:55,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359f0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55, skipping insertion in model container [2021-12-17 13:45:55,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 13:45:55,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 13:45:55,527 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/prod4br-ll_valuebound2.c[524,537] [2021-12-17 13:45:55,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 13:45:55,541 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 13:45:55,547 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/prod4br-ll_valuebound2.c[524,537] [2021-12-17 13:45:55,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 13:45:55,559 INFO L208 MainTranslator]: Completed translation [2021-12-17 13:45:55,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55 WrapperNode [2021-12-17 13:45:55,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 13:45:55,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 13:45:55,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 13:45:55,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 13:45:55,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,579 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-17 13:45:55,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 13:45:55,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 13:45:55,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 13:45:55,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 13:45:55,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 13:45:55,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 13:45:55,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 13:45:55,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 13:45:55,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (1/1) ... [2021-12-17 13:45:55,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 13:45:55,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:55,624 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) [2021-12-17 13:45:55,638 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 [2021-12-17 13:45:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 13:45:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 13:45:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 13:45:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 13:45:55,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 13:45:55,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 13:45:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 13:45:55,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 13:45:55,686 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 13:45:55,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 13:45:55,824 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 13:45:55,828 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 13:45:55,828 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 13:45:55,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:45:55 BoogieIcfgContainer [2021-12-17 13:45:55,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 13:45:55,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 13:45:55,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 13:45:55,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 13:45:55,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:45:55" (1/3) ... [2021-12-17 13:45:55,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3884db52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:45:55, skipping insertion in model container [2021-12-17 13:45:55,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:45:55" (2/3) ... [2021-12-17 13:45:55,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3884db52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:45:55, skipping insertion in model container [2021-12-17 13:45:55,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:45:55" (3/3) ... [2021-12-17 13:45:55,852 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound2.c [2021-12-17 13:45:55,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 13:45:55,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 13:45:55,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 13:45:55,902 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 13:45:55,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 13:45:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 13:45:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 13:45:55,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:55,919 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:55,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1472905330, now seen corresponding path program 1 times [2021-12-17 13:45:55,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:55,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260187941] [2021-12-17 13:45:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:55,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 13:45:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:56,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 13:45:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 13:45:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:56,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:56,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260187941] [2021-12-17 13:45:56,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260187941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 13:45:56,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 13:45:56,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 13:45:56,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401486580] [2021-12-17 13:45:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 13:45:56,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 13:45:56,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:56,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 13:45:56,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 13:45:56,107 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 13:45:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:56,126 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-17 13:45:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 13:45:56,128 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-17 13:45:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:56,134 INFO L225 Difference]: With dead ends: 55 [2021-12-17 13:45:56,134 INFO L226 Difference]: Without dead ends: 25 [2021-12-17 13:45:56,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 13:45:56,145 INFO L933 BasicCegarLoop]: 36 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, 36 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 [2021-12-17 13:45:56,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 13:45:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-17 13:45:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-17 13:45:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 13:45:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2021-12-17 13:45:56,182 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 24 [2021-12-17 13:45:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:56,183 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2021-12-17 13:45:56,183 INFO L471 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 13:45:56,183 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2021-12-17 13:45:56,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 13:45:56,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:56,186 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:56,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 13:45:56,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:56,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash 324198000, now seen corresponding path program 1 times [2021-12-17 13:45:56,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:56,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834841003] [2021-12-17 13:45:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:56,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:56,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:56,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881988375] [2021-12-17 13:45:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:56,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:56,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:56,233 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) [2021-12-17 13:45:56,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 13:45:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:56,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 13:45:56,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:56,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 13:45:56,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834841003] [2021-12-17 13:45:56,374 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:56,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881988375] [2021-12-17 13:45:56,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881988375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 13:45:56,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 13:45:56,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 13:45:56,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554436697] [2021-12-17 13:45:56,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 13:45:56,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 13:45:56,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:56,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 13:45:56,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 13:45:56,377 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 13:45:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:56,420 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-12-17 13:45:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 13:45:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-12-17 13:45:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:56,421 INFO L225 Difference]: With dead ends: 39 [2021-12-17 13:45:56,421 INFO L226 Difference]: Without dead ends: 37 [2021-12-17 13:45:56,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 13:45:56,422 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:56,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 13:45:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-17 13:45:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2021-12-17 13:45:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 13:45:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-12-17 13:45:56,428 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 24 [2021-12-17 13:45:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:56,428 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-17 13:45:56,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 13:45:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-12-17 13:45:56,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 13:45:56,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:56,430 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:56,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 13:45:56,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:56,646 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:56,646 INFO L85 PathProgramCache]: Analyzing trace with hash 693549193, now seen corresponding path program 1 times [2021-12-17 13:45:56,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:56,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285701186] [2021-12-17 13:45:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:56,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:56,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:56,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060906816] [2021-12-17 13:45:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:56,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:56,657 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) [2021-12-17 13:45:56,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 13:45:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:56,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 13:45:56,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 13:45:56,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:45:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:57,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285701186] [2021-12-17 13:45:57,199 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:57,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060906816] [2021-12-17 13:45:57,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060906816] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 13:45:57,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 13:45:57,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2021-12-17 13:45:57,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889452221] [2021-12-17 13:45:57,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 13:45:57,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 13:45:57,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 13:45:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-17 13:45:57,201 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 13:45:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:58,003 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-12-17 13:45:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 13:45:58,003 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2021-12-17 13:45:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:58,005 INFO L225 Difference]: With dead ends: 47 [2021-12-17 13:45:58,005 INFO L226 Difference]: Without dead ends: 43 [2021-12-17 13:45:58,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-17 13:45:58,007 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:58,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 108 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 13:45:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-17 13:45:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2021-12-17 13:45:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 13:45:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-12-17 13:45:58,012 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 30 [2021-12-17 13:45:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:58,012 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-12-17 13:45:58,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-17 13:45:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-12-17 13:45:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 13:45:58,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:58,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:58,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 13:45:58,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-17 13:45:58,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:58,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1087866724, now seen corresponding path program 1 times [2021-12-17 13:45:58,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:58,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023029653] [2021-12-17 13:45:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:58,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:58,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:58,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819222591] [2021-12-17 13:45:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:58,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:58,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:58,271 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) [2021-12-17 13:45:58,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 13:45:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:58,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-17 13:45:58,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:58,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:45:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:58,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:45:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023029653] [2021-12-17 13:45:58,862 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:45:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819222591] [2021-12-17 13:45:58,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819222591] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 13:45:58,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 13:45:58,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 15 [2021-12-17 13:45:58,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879334148] [2021-12-17 13:45:58,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 13:45:58,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 13:45:58,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:45:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 13:45:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-17 13:45:58,864 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 13:45:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:45:59,319 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-12-17 13:45:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 13:45:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2021-12-17 13:45:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:45:59,320 INFO L225 Difference]: With dead ends: 46 [2021-12-17 13:45:59,320 INFO L226 Difference]: Without dead ends: 42 [2021-12-17 13:45:59,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-17 13:45:59,321 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 13:45:59,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 76 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 13:45:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-17 13:45:59,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-12-17 13:45:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 13:45:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-12-17 13:45:59,328 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 32 [2021-12-17 13:45:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:45:59,328 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-12-17 13:45:59,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 13:45:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-12-17 13:45:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-17 13:45:59,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:45:59,333 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:45:59,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 13:45:59,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:59,543 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:45:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:45:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash 420635516, now seen corresponding path program 1 times [2021-12-17 13:45:59,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:45:59,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251288857] [2021-12-17 13:45:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:59,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:45:59,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:45:59,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176357470] [2021-12-17 13:45:59,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:45:59,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:45:59,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:45:59,556 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) [2021-12-17 13:45:59,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 13:45:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:45:59,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-17 13:45:59,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:45:59,753 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 13:45:59,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:46:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 13:46:00,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:46:00,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251288857] [2021-12-17 13:46:00,081 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:46:00,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176357470] [2021-12-17 13:46:00,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176357470] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 13:46:00,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 13:46:00,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-17 13:46:00,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947039952] [2021-12-17 13:46:00,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 13:46:00,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 13:46:00,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:46:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 13:46:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-17 13:46:00,084 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-12-17 13:46:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:46:00,186 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-12-17 13:46:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 13:46:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 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 43 [2021-12-17 13:46:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:46:00,188 INFO L225 Difference]: With dead ends: 55 [2021-12-17 13:46:00,188 INFO L226 Difference]: Without dead ends: 45 [2021-12-17 13:46:00,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-12-17 13:46:00,189 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 13:46:00,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 184 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 13:46:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-17 13:46:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-17 13:46:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 32 states have internal predecessors, (37), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 13:46:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-12-17 13:46:00,194 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 43 [2021-12-17 13:46:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:46:00,194 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-12-17 13:46:00,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 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) [2021-12-17 13:46:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-12-17 13:46:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-17 13:46:00,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 13:46:00,196 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 13:46:00,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 13:46:00,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:46:00,424 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 13:46:00,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 13:46:00,425 INFO L85 PathProgramCache]: Analyzing trace with hash 97606081, now seen corresponding path program 1 times [2021-12-17 13:46:00,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 13:46:00,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441719903] [2021-12-17 13:46:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:46:00,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 13:46:00,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 13:46:00,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814375991] [2021-12-17 13:46:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 13:46:00,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:46:00,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 13:46:00,435 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) [2021-12-17 13:46:00,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 13:46:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 13:46:00,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 13:46:00,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 13:46:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 13:46:00,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 13:46:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-17 13:46:00,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 13:46:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441719903] [2021-12-17 13:46:00,678 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 13:46:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814375991] [2021-12-17 13:46:00,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814375991] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 13:46:00,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 13:46:00,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-17 13:46:00,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842563493] [2021-12-17 13:46:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 13:46:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 13:46:00,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 13:46:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 13:46:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-17 13:46:00,680 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 13:46:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 13:46:00,827 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2021-12-17 13:46:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 13:46:00,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-12-17 13:46:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 13:46:00,827 INFO L225 Difference]: With dead ends: 45 [2021-12-17 13:46:00,827 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 13:46:00,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-17 13:46:00,828 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 13:46:00,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 103 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 13:46:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 13:46:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 13:46:00,829 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) [2021-12-17 13:46:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 13:46:00,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-12-17 13:46:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 13:46:00,829 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 13:46:00,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 13:46:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 13:46:00,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 13:46:00,831 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 13:46:00,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 13:46:01,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 13:46:01,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point L58(line 58) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 (<= 1 |ULTIMATE.start_main_~p~0#1|) .cse1) (and (<= |ULTIMATE.start_main_~b~0#1| 2) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse0 .cse1 (<= 0 |ULTIMATE.start_main_~b~0#1|)))) [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 13:46:01,266 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 13:46:01,267 INFO L861 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2021-12-17 13:46:01,267 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-17 13:46:01,267 INFO L854 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-17 13:46:01,267 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 (<= 1 |ULTIMATE.start_main_~p~0#1|) .cse1) (and (<= |ULTIMATE.start_main_~b~0#1| 2) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse0 .cse1 (<= 0 |ULTIMATE.start_main_~b~0#1|)))) [2021-12-17 13:46:01,267 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2021-12-17 13:46:01,267 INFO L858 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-12-17 13:46:01,267 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2021-12-17 13:46:01,267 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~b~0#1| 2) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~b~0#1|)) [2021-12-17 13:46:01,267 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~b~0#1| 2) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 |ULTIMATE.start_main_~b~0#1|)) [2021-12-17 13:46:01,267 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2021-12-17 13:46:01,267 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-12-17 13:46:01,267 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-12-17 13:46:01,267 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-12-17 13:46:01,268 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-12-17 13:46:01,268 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-12-17 13:46:01,268 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-12-17 13:46:01,268 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-12-17 13:46:01,268 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-12-17 13:46:01,268 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-12-17 13:46:01,268 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-12-17 13:46:01,270 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-17 13:46:01,271 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 13:46:01,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 01:46:01 BoogieIcfgContainer [2021-12-17 13:46:01,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 13:46:01,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 13:46:01,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 13:46:01,286 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 13:46:01,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:45:55" (3/4) ... [2021-12-17 13:46:01,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 13:46:01,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-17 13:46:01,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-17 13:46:01,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 13:46:01,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 13:46:01,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 13:46:01,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 13:46:01,325 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 13:46:01,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 13:46:01,326 INFO L158 Benchmark]: Toolchain (without parser) took 5923.90ms. Allocated memory was 96.5MB in the beginning and 169.9MB in the end (delta: 73.4MB). Free memory was 61.7MB in the beginning and 128.9MB in the end (delta: -67.2MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,327 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 13:46:01,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.81ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 72.9MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.21ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 71.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,328 INFO L158 Benchmark]: Boogie Preprocessor took 11.65ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 965.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,328 INFO L158 Benchmark]: RCFGBuilder took 238.83ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 59.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,328 INFO L158 Benchmark]: TraceAbstraction took 5451.83ms. Allocated memory was 96.5MB in the beginning and 169.9MB in the end (delta: 73.4MB). Free memory was 59.4MB in the beginning and 132.1MB in the end (delta: -72.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,329 INFO L158 Benchmark]: Witness Printer took 41.40ms. Allocated memory is still 169.9MB. Free memory was 132.1MB in the beginning and 128.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 13:46:01,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.81ms. Allocated memory is still 96.5MB. Free memory was 61.6MB in the beginning and 72.9MB in the end (delta: -11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.21ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 71.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.65ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 965.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 238.83ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 59.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5451.83ms. Allocated memory was 96.5MB in the beginning and 169.9MB in the end (delta: 73.4MB). Free memory was 59.4MB in the beginning and 132.1MB in the end (delta: -72.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 41.40ms. Allocated memory is still 169.9MB. Free memory was 132.1MB in the beginning and 128.9MB in the end (delta: 3.1MB). 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: 14]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 592 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 444 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 400 IncrementalHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 148 mSDtfsCounter, 400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 340 GetRequests, 271 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 26 PreInvPairs, 41 NumberOfFragments, 190 HoareAnnotationTreeSize, 26 FomulaSimplifications, 122 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 348 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 SizeOfPredicates, 24 NumberOfNonLiveVariables, 494 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 188/216 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((b <= 2 && y <= 2) && 0 <= x) && a * b * p + q == y * x) && 0 <= a) && x <= 2) && 1 <= y) && 0 <= b RESULT: Ultimate proved your program to be correct! [2021-12-17 13:46:01,354 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