./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.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 ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:05:36,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:05:36,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:05:36,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:05:36,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:05:36,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:05:36,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:05:36,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:05:36,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:05:36,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:05:36,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:05:36,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:05:36,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:05:36,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:05:36,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:05:36,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:05:36,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:05:36,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:05:36,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:05:36,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:05:36,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:05:36,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:05:36,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:05:36,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:05:36,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:05:36,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:05:36,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:05:36,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:05:36,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:05:36,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:05:36,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:05:36,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:05:36,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:05:36,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:05:36,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:05:36,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:05:36,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:05:36,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:05:36,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:05:36,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:05:36,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:05:36,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:05:36,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:05:36,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:05:36,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:05:36,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:05:36,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:05:36,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:05:36,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:05:36,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:05:36,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:05:36,923 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:05:36,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:05:36,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:05:36,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:05:36,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:05:36,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:05:36,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:05:36,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:05:36,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:05:36,925 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:05:36,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:05:36,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:05:36,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:05:36,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:05:36,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:05:36,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:05:36,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:05:36,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:05:36,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:05:36,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:05:36,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:05:36,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:05:36,927 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:05:36,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:05:36,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:05:36,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca6b6f09277139d829682a6458fdcdacf72411331aa404fd46248e3dcb9a9e7f [2022-07-21 04:05:37,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:05:37,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:05:37,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:05:37,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:05:37,161 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:05:37,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2022-07-21 04:05:37,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed74d0dd2/2a73ae47b0e745c4ba42fced2e51dfc3/FLAG806eedc53 [2022-07-21 04:05:37,559 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:05:37,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound10.c [2022-07-21 04:05:37,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed74d0dd2/2a73ae47b0e745c4ba42fced2e51dfc3/FLAG806eedc53 [2022-07-21 04:05:37,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed74d0dd2/2a73ae47b0e745c4ba42fced2e51dfc3 [2022-07-21 04:05:37,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:05:37,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:05:37,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:05:37,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:05:37,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:05:37,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48717047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37, skipping insertion in model container [2022-07-21 04:05:37,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:05:37,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:05:37,702 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/prodbin-ll_valuebound10.c[537,550] [2022-07-21 04:05:37,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:05:37,715 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:05:37,738 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/prodbin-ll_valuebound10.c[537,550] [2022-07-21 04:05:37,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:05:37,764 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:05:37,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37 WrapperNode [2022-07-21 04:05:37,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:05:37,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:05:37,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:05:37,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:05:37,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,810 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-07-21 04:05:37,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:05:37,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:05:37,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:05:37,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:05:37,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:05:37,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:05:37,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:05:37,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:05:37,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (1/1) ... [2022-07-21 04:05:37,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:05:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:05:37,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 04:05:37,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 04:05:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:05:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 04:05:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 04:05:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:05:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:05:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:05:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 04:05:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 04:05:37,964 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:05:37,967 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:05:38,109 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:05:38,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:05:38,113 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:05:38,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:05:38 BoogieIcfgContainer [2022-07-21 04:05:38,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:05:38,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:05:38,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:05:38,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:05:38,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:05:37" (1/3) ... [2022-07-21 04:05:38,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7230ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:05:38, skipping insertion in model container [2022-07-21 04:05:38,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:05:37" (2/3) ... [2022-07-21 04:05:38,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7230ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:05:38, skipping insertion in model container [2022-07-21 04:05:38,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:05:38" (3/3) ... [2022-07-21 04:05:38,137 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound10.c [2022-07-21 04:05:38,146 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:05:38,146 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:05:38,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:05:38,205 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@7769e664, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67b08d66 [2022-07-21 04:05:38,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:05:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 04:05:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 04:05:38,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:05:38,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:05:38,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:05:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:05:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2022-07-21 04:05:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:05:38,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821639699] [2022-07-21 04:05:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:05:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:05:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:05:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:05:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:05:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:05:38,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821639699] [2022-07-21 04:05:38,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821639699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:05:38,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:05:38,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 04:05:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560775511] [2022-07-21 04:05:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:05:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:05:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:05:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:05:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 04:05:38,419 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 04:05:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:05:38,435 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-07-21 04:05:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:05:38,438 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-07-21 04:05:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:05:38,443 INFO L225 Difference]: With dead ends: 51 [2022-07-21 04:05:38,443 INFO L226 Difference]: Without dead ends: 23 [2022-07-21 04:05:38,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 04:05:38,452 INFO L413 NwaCegarLoop]: 31 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, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:05:38,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:05:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-21 04:05:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-21 04:05:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 04:05:38,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-21 04:05:38,486 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2022-07-21 04:05:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:05:38,486 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-21 04:05:38,487 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 04:05:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-21 04:05:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 04:05:38,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:05:38,490 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:05:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 04:05:38,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:05:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:05:38,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2022-07-21 04:05:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:05:38,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409397690] [2022-07-21 04:05:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:05:38,520 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:05:38,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432985698] [2022-07-21 04:05:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:38,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:05:38,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:05:38,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:05:38,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:05:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:05:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:05:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:05:38,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:05:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:05:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409397690] [2022-07-21 04:05:38,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:05:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432985698] [2022-07-21 04:05:38,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432985698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:05:38,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:05:38,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 04:05:38,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874548672] [2022-07-21 04:05:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:05:38,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:05:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:05:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:05:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 04:05:38,654 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 04:05:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:05:38,718 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-07-21 04:05:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:05:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-07-21 04:05:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:05:38,721 INFO L225 Difference]: With dead ends: 35 [2022-07-21 04:05:38,721 INFO L226 Difference]: Without dead ends: 33 [2022-07-21 04:05:38,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:05:38,723 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:05:38,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:05:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-21 04:05:38,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-07-21 04:05:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 04:05:38,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-07-21 04:05:38,732 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2022-07-21 04:05:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:05:38,733 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-07-21 04:05:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 04:05:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-07-21 04:05:38,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 04:05:38,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:05:38,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:05:38,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 04:05:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:05:38,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:05:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:05:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash -895979555, now seen corresponding path program 1 times [2022-07-21 04:05:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:05:38,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756880251] [2022-07-21 04:05:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:05:38,963 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:05:38,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947279007] [2022-07-21 04:05:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:38,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:05:38,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:05:38,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:05:38,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:05:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:39,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:05:39,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:05:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:05:39,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:05:39,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:05:39,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756880251] [2022-07-21 04:05:39,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:05:39,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947279007] [2022-07-21 04:05:39,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947279007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:05:39,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:05:39,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:05:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800249320] [2022-07-21 04:05:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:05:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:05:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:05:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:05:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:05:39,070 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 04:05:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:05:39,117 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-07-21 04:05:39,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:05:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-07-21 04:05:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:05:39,119 INFO L225 Difference]: With dead ends: 39 [2022-07-21 04:05:39,119 INFO L226 Difference]: Without dead ends: 32 [2022-07-21 04:05:39,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:05:39,120 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:05:39,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:05:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-21 04:05:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-07-21 04:05:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 04:05:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-07-21 04:05:39,125 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 30 [2022-07-21 04:05:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:05:39,125 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-07-21 04:05:39,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-21 04:05:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-07-21 04:05:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 04:05:39,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:05:39,127 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:05:39,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:05:39,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-21 04:05:39,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:05:39,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:05:39,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2022-07-21 04:05:39,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:05:39,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536677768] [2022-07-21 04:05:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:39,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:05:39,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:05:39,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680360754] [2022-07-21 04:05:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:05:39,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:05:39,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:05:39,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:05:39,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:05:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:05:39,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 04:05:39,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:05:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:05:48,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:05:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:05:56,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:05:56,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536677768] [2022-07-21 04:05:56,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:05:56,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680360754] [2022-07-21 04:05:56,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680360754] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:05:56,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 04:05:56,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2022-07-21 04:05:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427606859] [2022-07-21 04:05:56,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 04:05:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 04:05:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:05:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 04:05:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:05:56,582 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 04:05:58,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 04:06:00,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 04:06:03,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 04:06:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:06:04,918 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2022-07-21 04:06:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 04:06:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-07-21 04:06:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:06:04,920 INFO L225 Difference]: With dead ends: 48 [2022-07-21 04:06:04,920 INFO L226 Difference]: Without dead ends: 46 [2022-07-21 04:06:04,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:06:04,921 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:06:04,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 130 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 193 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-07-21 04:06:04,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-21 04:06:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-07-21 04:06:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 04:06:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-07-21 04:06:04,930 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 33 [2022-07-21 04:06:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:06:04,930 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-07-21 04:06:04,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 04:06:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-07-21 04:06:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 04:06:04,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:06:04,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:06:04,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:06:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:05,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:06:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:06:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2022-07-21 04:06:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:06:05,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247127600] [2022-07-21 04:06:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:06:05,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:06:05,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763907589] [2022-07-21 04:06:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:05,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:05,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:06:05,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:06:05,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:06:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:06:05,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 04:06:05,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:06:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:06:08,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:06:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:06:09,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:06:09,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247127600] [2022-07-21 04:06:09,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:06:09,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763907589] [2022-07-21 04:06:09,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763907589] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:06:09,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 04:06:09,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-07-21 04:06:09,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473791264] [2022-07-21 04:06:09,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 04:06:09,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:06:09,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:06:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:06:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:06:09,107 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 04:06:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:06:09,754 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2022-07-21 04:06:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:06:09,755 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 33 [2022-07-21 04:06:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:06:09,756 INFO L225 Difference]: With dead ends: 79 [2022-07-21 04:06:09,756 INFO L226 Difference]: Without dead ends: 72 [2022-07-21 04:06:09,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:06:09,757 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:06:09,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 88 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:06:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-21 04:06:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2022-07-21 04:06:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.22) internal successors, (61), 53 states have internal predecessors, (61), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-21 04:06:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2022-07-21 04:06:09,765 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 33 [2022-07-21 04:06:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:06:09,765 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2022-07-21 04:06:09,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 12 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 04:06:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2022-07-21 04:06:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 04:06:09,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:06:09,767 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:06:09,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 04:06:09,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:09,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:06:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:06:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2022-07-21 04:06:09,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:06:09,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723328646] [2022-07-21 04:06:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:09,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:06:09,987 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:06:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617870812] [2022-07-21 04:06:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:06:09,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:06:09,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:06:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:06:10,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 04:06:10,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:06:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:06:10,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:06:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 04:06:10,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:06:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723328646] [2022-07-21 04:06:10,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:06:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617870812] [2022-07-21 04:06:10,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617870812] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:06:10,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 04:06:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-21 04:06:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588672500] [2022-07-21 04:06:10,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 04:06:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:06:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:06:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:06:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:06:10,176 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 04:06:12,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 04:06:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:06:12,252 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2022-07-21 04:06:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 04:06:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-07-21 04:06:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:06:12,254 INFO L225 Difference]: With dead ends: 76 [2022-07-21 04:06:12,254 INFO L226 Difference]: Without dead ends: 69 [2022-07-21 04:06:12,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:06:12,255 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:06:12,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 04:06:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-21 04:06:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2022-07-21 04:06:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-21 04:06:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2022-07-21 04:06:12,271 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 39 [2022-07-21 04:06:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:06:12,272 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2022-07-21 04:06:12,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 04:06:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2022-07-21 04:06:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 04:06:12,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:06:12,277 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:06:12,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:06:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:12,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:06:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:06:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times [2022-07-21 04:06:12,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:06:12,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106821558] [2022-07-21 04:06:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:06:12,504 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:06:12,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433185550] [2022-07-21 04:06:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:06:12,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:06:12,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:06:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:06:12,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 04:06:12,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:06:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:06:12,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:06:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:06:13,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:06:13,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106821558] [2022-07-21 04:06:13,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:06:13,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433185550] [2022-07-21 04:06:13,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433185550] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:06:13,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 04:06:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2022-07-21 04:06:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463490142] [2022-07-21 04:06:13,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 04:06:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 04:06:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:06:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 04:06:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:06:13,278 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-07-21 04:06:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:06:13,606 INFO L93 Difference]: Finished difference Result 113 states and 132 transitions. [2022-07-21 04:06:13,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 04:06:13,606 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 51 [2022-07-21 04:06:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:06:13,607 INFO L225 Difference]: With dead ends: 113 [2022-07-21 04:06:13,607 INFO L226 Difference]: Without dead ends: 68 [2022-07-21 04:06:13,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 04:06:13,608 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:06:13,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 176 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:06:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-21 04:06:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2022-07-21 04:06:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.0625) internal successors, (51), 51 states have internal predecessors, (51), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-21 04:06:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2022-07-21 04:06:13,614 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 51 [2022-07-21 04:06:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:06:13,615 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2022-07-21 04:06:13,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-07-21 04:06:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2022-07-21 04:06:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 04:06:13,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:06:13,616 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:06:13,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 04:06:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:13,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:06:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:06:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1217167219, now seen corresponding path program 2 times [2022-07-21 04:06:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:06:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884441374] [2022-07-21 04:06:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:06:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:06:13,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:06:13,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381172623] [2022-07-21 04:06:13,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 04:06:13,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:06:13,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:06:13,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:06:13,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:06:13,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 04:06:13,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 04:06:13,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-21 04:06:13,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:07:44,092 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 17 DAG size of output: 1 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-21 04:07:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 21 refuted. 2 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 04:07:48,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:07:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:07:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884441374] [2022-07-21 04:07:54,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:07:54,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381172623] [2022-07-21 04:07:54,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381172623] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:07:54,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:07:54,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-21 04:07:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930244273] [2022-07-21 04:07:54,979 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 04:07:54,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 04:07:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:07:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 04:07:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=400, Unknown=3, NotChecked=0, Total=506 [2022-07-21 04:07:54,980 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 04:07:56,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 04:07:59,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 04:08:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:08:03,082 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2022-07-21 04:08:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:08:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 51 [2022-07-21 04:08:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:08:03,083 INFO L225 Difference]: With dead ends: 84 [2022-07-21 04:08:03,083 INFO L226 Difference]: Without dead ends: 82 [2022-07-21 04:08:03,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=116, Invalid=481, Unknown=3, NotChecked=0, Total=600 [2022-07-21 04:08:03,084 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:08:03,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 184 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 326 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-07-21 04:08:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-21 04:08:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2022-07-21 04:08:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 55 states have internal predecessors, (56), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-21 04:08:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-07-21 04:08:03,096 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 51 [2022-07-21 04:08:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:08:03,096 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-07-21 04:08:03,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-21 04:08:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-07-21 04:08:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-21 04:08:03,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:08:03,098 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:08:03,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 04:08:03,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:08:03,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:08:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:08:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash -55550255, now seen corresponding path program 3 times [2022-07-21 04:08:03,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:08:03,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911637365] [2022-07-21 04:08:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:08:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:08:03,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:08:03,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916278497] [2022-07-21 04:08:03,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 04:08:03,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:08:03,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:08:03,312 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:08:03,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 04:08:03,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 04:08:03,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 04:08:03,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 04:08:03,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:08:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:08:04,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:08:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:08:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:08:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911637365] [2022-07-21 04:08:04,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:08:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916278497] [2022-07-21 04:08:04,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916278497] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:08:04,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 04:08:04,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-07-21 04:08:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574643293] [2022-07-21 04:08:04,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 04:08:04,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 04:08:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:08:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 04:08:04,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:08:04,433 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 04:08:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:08:05,112 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2022-07-21 04:08:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:08:05,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2022-07-21 04:08:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:08:05,113 INFO L225 Difference]: With dead ends: 87 [2022-07-21 04:08:05,113 INFO L226 Difference]: Without dead ends: 47 [2022-07-21 04:08:05,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-07-21 04:08:05,114 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:08:05,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 161 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 04:08:05,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-21 04:08:05,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-07-21 04:08:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 04:08:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-07-21 04:08:05,118 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 51 [2022-07-21 04:08:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:08:05,118 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-07-21 04:08:05,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 04:08:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-07-21 04:08:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 04:08:05,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:08:05,122 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:08:05,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 04:08:05,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 04:08:05,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:08:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:08:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times [2022-07-21 04:08:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:08:05,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488897859] [2022-07-21 04:08:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:08:05,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:08:05,342 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 04:08:05,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61488073] [2022-07-21 04:08:05,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 04:08:05,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:08:05,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:08:05,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:08:05,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 04:08:05,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 04:08:05,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 04:08:05,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-21 04:08:05,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:08:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:08:05,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:08:05,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:08:05,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488897859] [2022-07-21 04:08:05,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 04:08:05,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61488073] [2022-07-21 04:08:05,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61488073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:08:05,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:08:05,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 04:08:05,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897016045] [2022-07-21 04:08:05,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:08:05,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 04:08:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:08:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 04:08:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:08:05,597 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-21 04:08:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:08:05,810 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-07-21 04:08:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 04:08:05,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 60 [2022-07-21 04:08:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:08:05,811 INFO L225 Difference]: With dead ends: 49 [2022-07-21 04:08:05,811 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 04:08:05,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:08:05,812 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:08:05,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 95 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 04:08:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 04:08:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 04:08:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 04:08:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 04:08:05,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2022-07-21 04:08:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:08:05,813 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 04:08:05,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-07-21 04:08:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 04:08:05,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 04:08:05,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 04:08:05,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 04:08:06,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 04:08:06,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 04:08:07,959 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 04:08:07,959 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-07-21 04:08:07,959 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 10)) [2022-07-21 04:08:07,959 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L902 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (let ((.cse2 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse4 (+ |ULTIMATE.start_main_~y~0#1| 1)) (.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse5 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3)) (.cse1 (<= |ULTIMATE.start_main_~b~0#1| 10))) (or (and (= |ULTIMATE.start_main_~y~0#1| (div |ULTIMATE.start_main_~b~0#1| 2)) .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse2 (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 4) .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) .cse1 (= .cse3 (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* (div |ULTIMATE.start_main_~x~0#1| 2) |ULTIMATE.start_main_~y~0#1|)))) (< 0 .cse4)) (and (< |ULTIMATE.start_main_~y~0#1| 2) (<= 1 (mod .cse4 2)) .cse0 .cse5 .cse1 (<= 0 .cse4)) (and (< 0 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse5 .cse1 (< |ULTIMATE.start_main_~y~0#1| 3))))) [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0))) [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (let ((.cse2 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse4 (+ |ULTIMATE.start_main_~y~0#1| 1)) (.cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse5 (= (+ |ULTIMATE.start_main_~z~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3)) (.cse1 (<= |ULTIMATE.start_main_~b~0#1| 10))) (or (and (= |ULTIMATE.start_main_~y~0#1| (div |ULTIMATE.start_main_~b~0#1| 2)) .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse2 (not (= (mod |ULTIMATE.start_main_~b~0#1| 2) 1))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= |ULTIMATE.start_main_~y~0#1| 4) .cse0 (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) .cse1 (= .cse3 (+ |ULTIMATE.start_main_~z~0#1| (* 2 (* (div |ULTIMATE.start_main_~x~0#1| 2) |ULTIMATE.start_main_~y~0#1|)))) (< 0 .cse4)) (and (< |ULTIMATE.start_main_~y~0#1| 2) (<= 1 (mod .cse4 2)) .cse0 .cse5 .cse1 (<= 0 .cse4)) (and (< 0 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse5 .cse1 (< |ULTIMATE.start_main_~y~0#1| 3))))) [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2022-07-21 04:08:07,960 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2022-07-21 04:08:07,961 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2022-07-21 04:08:07,961 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2022-07-21 04:08:07,961 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2022-07-21 04:08:07,961 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2022-07-21 04:08:07,961 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2022-07-21 04:08:07,961 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2022-07-21 04:08:07,963 INFO L356 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2022-07-21 04:08:07,964 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 04:08:07,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:08:07 BoogieIcfgContainer [2022-07-21 04:08:07,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 04:08:07,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 04:08:07,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 04:08:07,975 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 04:08:07,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:05:38" (3/4) ... [2022-07-21 04:08:07,977 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 04:08:07,981 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-21 04:08:07,981 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 04:08:07,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-21 04:08:07,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 04:08:07,983 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 04:08:07,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 04:08:08,022 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 04:08:08,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 04:08:08,022 INFO L158 Benchmark]: Toolchain (without parser) took 150441.55ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 43.9MB in the beginning and 22.4MB in the end (delta: 21.5MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2022-07-21 04:08:08,023 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 04:08:08,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.52ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 46.4MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 04:08:08,023 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.09ms. Allocated memory is still 62.9MB. Free memory was 46.2MB in the beginning and 44.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 04:08:08,023 INFO L158 Benchmark]: Boogie Preprocessor took 42.67ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 43.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 04:08:08,024 INFO L158 Benchmark]: RCFGBuilder took 260.02ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 34.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 04:08:08,024 INFO L158 Benchmark]: TraceAbstraction took 149858.29ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 33.6MB in the beginning and 25.4MB in the end (delta: 8.2MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2022-07-21 04:08:08,024 INFO L158 Benchmark]: Witness Printer took 47.51ms. Allocated memory is still 79.7MB. Free memory was 25.4MB in the beginning and 22.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 04:08:08,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.52ms. Allocated memory is still 62.9MB. Free memory was 43.6MB in the beginning and 46.4MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.09ms. Allocated memory is still 62.9MB. Free memory was 46.2MB in the beginning and 44.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.67ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 43.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 260.02ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 34.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 149858.29ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 33.6MB in the beginning and 25.4MB in the end (delta: 8.2MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. * Witness Printer took 47.51ms. Allocated memory is still 79.7MB. Free memory was 25.4MB in the beginning and 22.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: 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: 149.8s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 19.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 1100 SdHoareTripleChecker+Invalid, 19.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 877 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1488 IncrementalHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 223 mSDtfsCounter, 1488 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 638 GetRequests, 478 SyntacticMatches, 10 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 23.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=8, InterpolantAutomatonStates: 107, 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, 10 MinimizatonAttempts, 25 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 34 PreInvPairs, 60 NumberOfFragments, 288 HoareAnnotationTreeSize, 34 FomulaSimplifications, 169 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1137 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 124.5s InterpolantComputationTime, 396 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 588 ConstructedInterpolants, 0 QuantifiedInterpolants, 2975 SizeOfPredicates, 34 NumberOfNonLiveVariables, 958 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 427/485 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: 34]: Loop Invariant Derived loop invariant: ((((((((y == b / 2 && 1 <= b) && b <= 10) && x == 2 * a) && z == 0) && !(b % 2 == 1)) || ((((b == y && 1 <= b) && b <= 10) && z == 0) && a == x)) || (((((y <= 4 && 1 <= b) && x % 2 == 0) && b <= 10) && a * b == z + 2 * (x / 2 * y)) && 0 < y + 1)) || (((((y < 2 && 1 <= (y + 1) % 2) && 1 <= b) && z + x * y == a * b) && b <= 10) && 0 <= y + 1)) || ((((0 < y && 1 <= b) && z + x * y == a * b) && b <= 10) && y < 3) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 04:08:08,081 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