./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.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 a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:32:05,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:32:05,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:32:05,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:32:05,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:32:05,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:32:05,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:32:05,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:32:05,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:32:05,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:32:05,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:32:05,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:32:05,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:32:05,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:32:05,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:32:05,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:32:05,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:32:05,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:32:05,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:32:05,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:32:05,743 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:32:05,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:32:05,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:32:05,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:32:05,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:32:05,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:32:05,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:32:05,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:32:05,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:32:05,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:32:05,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:32:05,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:32:05,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:32:05,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:32:05,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:32:05,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:32:05,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:32:05,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:32:05,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:32:05,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:32:05,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:32:05,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:32:05,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:32:05,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:32:05,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:32:05,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:32:05,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:32:05,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:32:05,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:32:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:32:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:32:05,784 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:32:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:32:05,784 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:32:05,785 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:32:05,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:32:05,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:32:05,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:32:05,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:32:05,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:32:05,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:32:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:32:05,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:32:05,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:32:05,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:32:05,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:32:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:32:05,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:32:05,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:32:05,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:32:05,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9fbcd5bc820bcc72ba138482dd1579d30a89debbfe581511878d5fb87d021a2 [2022-07-19 15:32:06,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:32:06,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:32:06,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:32:06,022 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:32:06,023 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:32:06,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2022-07-19 15:32:06,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b8d1c805/a54b29e2d12548b8a0d47d24f76ff215/FLAG0ec5d76e8 [2022-07-19 15:32:06,383 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:32:06,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c [2022-07-19 15:32:06,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b8d1c805/a54b29e2d12548b8a0d47d24f76ff215/FLAG0ec5d76e8 [2022-07-19 15:32:06,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b8d1c805/a54b29e2d12548b8a0d47d24f76ff215 [2022-07-19 15:32:06,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:32:06,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:32:06,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:32:06,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:32:06,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:32:06,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:06,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7e1214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06, skipping insertion in model container [2022-07-19 15:32:06,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:06,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:32:06,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:32:06,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c[597,610] [2022-07-19 15:32:06,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:32:06,951 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:32:06,959 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound5.c[597,610] [2022-07-19 15:32:06,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:32:06,971 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:32:06,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06 WrapperNode [2022-07-19 15:32:06,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:32:06,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:32:06,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:32:06,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:32:06,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:06,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:06,998 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-07-19 15:32:06,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:32:06,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:32:06,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:32:06,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:32:07,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:32:07,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:32:07,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:32:07,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:32:07,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (1/1) ... [2022-07-19 15:32:07,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:32:07,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:07,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 15:32:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 15:32:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:32:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 15:32:07,074 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 15:32:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:32:07,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:32:07,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:32:07,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:32:07,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:32:07,115 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:32:07,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:32:07,205 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:32:07,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:32:07,209 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:32:07,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:32:07 BoogieIcfgContainer [2022-07-19 15:32:07,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:32:07,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:32:07,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:32:07,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:32:07,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:32:06" (1/3) ... [2022-07-19 15:32:07,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbd4efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:32:07, skipping insertion in model container [2022-07-19 15:32:07,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:32:06" (2/3) ... [2022-07-19 15:32:07,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbd4efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:32:07, skipping insertion in model container [2022-07-19 15:32:07,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:32:07" (3/3) ... [2022-07-19 15:32:07,220 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound5.c [2022-07-19 15:32:07,230 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:32:07,230 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:32:07,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:32:07,280 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2fc72766, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cc200c4 [2022-07-19 15:32:07,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:32:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:32:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:32:07,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:07,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:07,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:07,307 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2022-07-19 15:32:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34435281] [2022-07-19 15:32:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 15:32:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 15:32:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 15:32:07,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:07,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34435281] [2022-07-19 15:32:07,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34435281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:32:07,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:32:07,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:32:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095610173] [2022-07-19 15:32:07,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:32:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:32:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:32:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:32:07,505 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:32:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:07,521 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-07-19 15:32:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:32:07,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-19 15:32:07,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:07,527 INFO L225 Difference]: With dead ends: 51 [2022-07-19 15:32:07,528 INFO L226 Difference]: Without dead ends: 23 [2022-07-19 15:32:07,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:32:07,533 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:07,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:32:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-19 15:32:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-19 15:32:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:32:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-19 15:32:07,560 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-07-19 15:32:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:07,560 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-19 15:32:07,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:32:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-19 15:32:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:32:07,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:07,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:07,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:32:07,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2022-07-19 15:32:07,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:07,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883049759] [2022-07-19 15:32:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:07,586 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693695083] [2022-07-19 15:32:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:07,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:07,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:07,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 15:32:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:07,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 15:32:07,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 15:32:07,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:32:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883049759] [2022-07-19 15:32:07,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693695083] [2022-07-19 15:32:07,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693695083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:32:07,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:32:07,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 15:32:07,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978904770] [2022-07-19 15:32:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:32:07,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:32:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:32:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:32:07,793 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 15:32:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:07,881 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-19 15:32:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:32:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-19 15:32:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:07,883 INFO L225 Difference]: With dead ends: 35 [2022-07-19 15:32:07,883 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 15:32:07,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:32:07,884 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:07,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:07,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 15:32:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-07-19 15:32:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:32:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-19 15:32:07,890 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2022-07-19 15:32:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:07,891 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-19 15:32:07,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 15:32:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-19 15:32:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 15:32:07,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:07,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:07,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:08,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2022-07-19 15:32:08,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304387122] [2022-07-19 15:32:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:08,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:08,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292166706] [2022-07-19 15:32:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:08,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:08,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:08,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:08,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 15:32:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:08,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-19 15:32:08,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 15:32:08,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 15:32:08,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:08,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304387122] [2022-07-19 15:32:08,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:08,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292166706] [2022-07-19 15:32:08,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292166706] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:08,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:08,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2022-07-19 15:32:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846340820] [2022-07-19 15:32:08,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:08,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:32:08,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:32:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:32:08,432 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 15:32:08,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:08,712 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-07-19 15:32:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 15:32:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2022-07-19 15:32:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:08,713 INFO L225 Difference]: With dead ends: 44 [2022-07-19 15:32:08,713 INFO L226 Difference]: Without dead ends: 38 [2022-07-19 15:32:08,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-07-19 15:32:08,714 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:08,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 71 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 15:32:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-19 15:32:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-07-19 15:32:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:32:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-19 15:32:08,724 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2022-07-19 15:32:08,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:08,725 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-19 15:32:08,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 15:32:08,726 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-19 15:32:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 15:32:08,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:08,728 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:08,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:08,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 15:32:08,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2022-07-19 15:32:08,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:08,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037610436] [2022-07-19 15:32:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:08,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:08,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:08,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65089498] [2022-07-19 15:32:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:08,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:08,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:08,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 15:32:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:08,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 15:32:08,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 15:32:09,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 15:32:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:09,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037610436] [2022-07-19 15:32:09,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:09,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65089498] [2022-07-19 15:32:09,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65089498] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:09,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:09,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-07-19 15:32:09,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606662647] [2022-07-19 15:32:09,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:09,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 15:32:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 15:32:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-19 15:32:09,498 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 15:32:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:09,909 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-07-19 15:32:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 15:32:09,909 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2022-07-19 15:32:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:09,910 INFO L225 Difference]: With dead ends: 56 [2022-07-19 15:32:09,910 INFO L226 Difference]: Without dead ends: 48 [2022-07-19 15:32:09,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 15:32:09,911 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:09,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-07-19 15:32:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-19 15:32:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2022-07-19 15:32:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:32:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-19 15:32:09,917 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 35 [2022-07-19 15:32:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:09,918 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-19 15:32:09,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 15:32:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-19 15:32:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 15:32:09,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:09,919 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:09,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:10,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:10,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:10,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash 546586445, now seen corresponding path program 1 times [2022-07-19 15:32:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:10,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896439917] [2022-07-19 15:32:10,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:10,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:10,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:10,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019959693] [2022-07-19 15:32:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:10,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:10,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:10,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 15:32:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:10,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 15:32:10,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 15:32:12,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 15:32:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896439917] [2022-07-19 15:32:12,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019959693] [2022-07-19 15:32:12,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019959693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:12,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:12,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-07-19 15:32:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873465848] [2022-07-19 15:32:12,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:32:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:32:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:32:12,255 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-19 15:32:14,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:18,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:20,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:22,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:24,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:26,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:28,546 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-07-19 15:32:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:32:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2022-07-19 15:32:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:28,547 INFO L225 Difference]: With dead ends: 52 [2022-07-19 15:32:28,548 INFO L226 Difference]: Without dead ends: 46 [2022-07-19 15:32:28,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-07-19 15:32:28,548 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:28,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 12.2s Time] [2022-07-19 15:32:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-19 15:32:28,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2022-07-19 15:32:28,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:32:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-07-19 15:32:28,560 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 44 [2022-07-19 15:32:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:28,561 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-07-19 15:32:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-19 15:32:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-07-19 15:32:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 15:32:28,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:28,564 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:28,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:28,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:28,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1258851889, now seen corresponding path program 1 times [2022-07-19 15:32:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:28,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263463477] [2022-07-19 15:32:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:28,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:28,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:28,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227231496] [2022-07-19 15:32:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:28,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:28,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:28,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:28,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 15:32:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:28,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:32:28,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:32:28,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:32:29,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:29,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263463477] [2022-07-19 15:32:29,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:29,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227231496] [2022-07-19 15:32:29,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227231496] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:29,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:29,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 15:32:29,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124181234] [2022-07-19 15:32:29,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:29,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 15:32:29,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 15:32:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:32:29,055 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-19 15:32:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:29,217 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-07-19 15:32:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:32:29,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 44 [2022-07-19 15:32:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:29,218 INFO L225 Difference]: With dead ends: 61 [2022-07-19 15:32:29,218 INFO L226 Difference]: Without dead ends: 55 [2022-07-19 15:32:29,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-07-19 15:32:29,219 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:29,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 136 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:29,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-19 15:32:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2022-07-19 15:32:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 15:32:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-07-19 15:32:29,232 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2022-07-19 15:32:29,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:29,232 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-07-19 15:32:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-19 15:32:29,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-07-19 15:32:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 15:32:29,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:29,238 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:29,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 15:32:29,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:29,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:29,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:29,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1465806458, now seen corresponding path program 2 times [2022-07-19 15:32:29,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:29,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792135690] [2022-07-19 15:32:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:29,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:29,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:29,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724676250] [2022-07-19 15:32:29,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:32:29,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:29,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:29,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 15:32:29,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:32:29,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:32:29,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:32:29,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 15:32:29,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 15:32:29,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:29,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792135690] [2022-07-19 15:32:29,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:29,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724676250] [2022-07-19 15:32:29,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724676250] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:29,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:29,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-19 15:32:29,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545800473] [2022-07-19 15:32:29,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:29,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:32:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:32:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:32:29,707 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-19 15:32:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:29,844 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2022-07-19 15:32:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:32:29,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 53 [2022-07-19 15:32:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:29,845 INFO L225 Difference]: With dead ends: 74 [2022-07-19 15:32:29,845 INFO L226 Difference]: Without dead ends: 68 [2022-07-19 15:32:29,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:32:29,846 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:29,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 110 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-19 15:32:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2022-07-19 15:32:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:32:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-07-19 15:32:29,863 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 53 [2022-07-19 15:32:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:29,864 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-07-19 15:32:29,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-19 15:32:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-07-19 15:32:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 15:32:29,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:29,866 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:29,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:30,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:30,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 3 times [2022-07-19 15:32:30,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:30,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400821080] [2022-07-19 15:32:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:30,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:30,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164238078] [2022-07-19 15:32:30,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:32:30,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:30,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:30,082 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:30,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 15:32:30,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 15:32:30,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:32:30,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 15:32:30,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 15:32:34,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 15:32:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400821080] [2022-07-19 15:32:57,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164238078] [2022-07-19 15:32:57,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164238078] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:57,994 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:57,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-07-19 15:32:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916423329] [2022-07-19 15:32:57,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 15:32:57,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 15:32:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=500, Unknown=3, NotChecked=0, Total=600 [2022-07-19 15:32:57,995 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 15:33:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:09,786 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2022-07-19 15:33:09,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 15:33:09,786 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 53 [2022-07-19 15:33:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:09,787 INFO L225 Difference]: With dead ends: 62 [2022-07-19 15:33:09,787 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 15:33:09,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=253, Invalid=1150, Unknown=3, NotChecked=0, Total=1406 [2022-07-19 15:33:09,788 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:09,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 204 Invalid, 0 Unknown, 58 Unchecked, 3.8s Time] [2022-07-19 15:33:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 15:33:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 15:33:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:33:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 15:33:09,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-07-19 15:33:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:09,789 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 15:33:09,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 15:33:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 15:33:09,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 15:33:09,792 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:33:09,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 15:33:10,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:10,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 15:33:14,190 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L902 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2022-07-19 15:33:14,191 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (and (<= |ULTIMATE.start_main_~Y~0#1| 5) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse1)) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse2 .cse1)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ .cse0 .cse2 .cse1)))) (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse1 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)))) [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~Y~0#1| 5) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2)) (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 15:33:14,191 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= |ULTIMATE.start_main_~Y~0#1| 5) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) .cse0)) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (<= |ULTIMATE.start_main_~X~0#1| 5) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2)) (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))))) [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-07-19 15:33:14,192 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-19 15:33:14,194 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-07-19 15:33:14,196 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:33:14,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:33:14 BoogieIcfgContainer [2022-07-19 15:33:14,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:33:14,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:33:14,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:33:14,209 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:33:14,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:32:07" (3/4) ... [2022-07-19 15:33:14,211 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 15:33:14,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-19 15:33:14,215 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 15:33:14,217 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-19 15:33:14,217 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 15:33:14,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 15:33:14,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 15:33:14,236 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:33:14,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:33:14,237 INFO L158 Benchmark]: Toolchain (without parser) took 67412.87ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 65.9MB in the beginning and 63.7MB in the end (delta: 2.2MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-07-19 15:33:14,237 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:33:14,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.30ms. Allocated memory is still 104.9MB. Free memory was 65.8MB in the beginning and 84.4MB in the end (delta: -18.6MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-07-19 15:33:14,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.40ms. Allocated memory is still 104.9MB. Free memory was 84.4MB in the beginning and 82.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:33:14,238 INFO L158 Benchmark]: Boogie Preprocessor took 21.69ms. Allocated memory is still 104.9MB. Free memory was 82.9MB in the beginning and 82.1MB in the end (delta: 863.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:33:14,238 INFO L158 Benchmark]: RCFGBuilder took 189.45ms. Allocated memory is still 104.9MB. Free memory was 81.7MB in the beginning and 71.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:33:14,238 INFO L158 Benchmark]: TraceAbstraction took 66992.69ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 71.3MB in the beginning and 66.9MB in the end (delta: 4.4MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2022-07-19 15:33:14,238 INFO L158 Benchmark]: Witness Printer took 31.32ms. Allocated memory is still 134.2MB. Free memory was 66.9MB in the beginning and 63.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 15:33:14,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.30ms. Allocated memory is still 104.9MB. Free memory was 65.8MB in the beginning and 84.4MB in the end (delta: -18.6MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.40ms. Allocated memory is still 104.9MB. Free memory was 84.4MB in the beginning and 82.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.69ms. Allocated memory is still 104.9MB. Free memory was 82.9MB in the beginning and 82.1MB in the end (delta: 863.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 189.45ms. Allocated memory is still 104.9MB. Free memory was 81.7MB in the beginning and 71.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 66992.69ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 71.3MB in the beginning and 66.9MB in the end (delta: 4.4MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Witness Printer took 31.32ms. Allocated memory is still 134.2MB. Free memory was 66.9MB in the beginning and 63.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.9s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 29.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 16.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 739 SdHoareTripleChecker+Invalid, 16.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 114 IncrementalHoareTripleChecker+Unchecked, 576 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1218 IncrementalHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 163 mSDtfsCounter, 1218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 431 SyntacticMatches, 6 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=7, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 27 PreInvPairs, 51 NumberOfFragments, 211 HoareAnnotationTreeSize, 27 FomulaSimplifications, 504 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5256 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 31.3s InterpolantComputationTime, 295 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 538 ConstructedInterpolants, 6 QuantifiedInterpolants, 3453 SizeOfPredicates, 44 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 340/426 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((Y <= 5 && X * y * 2 + X + v == Y * x * 2 + 2 * Y) && X <= 5) && 0 <= Y) && 0 <= X) && (x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 2 * y + X * y * 2 == 2 * (x * y))) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 15:33:14,393 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