./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:26:22,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:26:22,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:26:22,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:26:22,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:26:22,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:26:22,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:26:22,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:26:22,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:26:22,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:26:22,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:26:22,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:26:22,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:26:22,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:26:22,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:26:22,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:26:22,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:26:22,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:26:22,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:26:22,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:26:22,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:26:22,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:26:22,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:26:22,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:26:22,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:26:22,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:26:22,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:26:22,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:26:22,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:26:22,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:26:22,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:26:22,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:26:22,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:26:22,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:26:22,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:26:22,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:26:22,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:26:22,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:26:22,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:26:22,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:26:22,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:26:22,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 16:26:22,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:26:22,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:26:22,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:26:22,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:26:22,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:26:22,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:26:22,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:26:22,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:26:22,729 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:26:22,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:26:22,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:26:22,731 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:26:22,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:26:22,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:26:22,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:26:22,731 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:26:22,731 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:26:22,732 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 16:26:22,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:26:22,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:26:22,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:26:22,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:26:22,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:26:22,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:26:22,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:26:22,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:26:22,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:26:22,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:26:22,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:26:22,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:26:22,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:26:22,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b [2021-12-22 16:26:22,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:26:23,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:26:23,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:26:23,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:26:23,017 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:26:23,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-12-22 16:26:23,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec0774ff/35f59632e58b4035902f983f2a86d475/FLAGb1e40ff4f [2021-12-22 16:26:23,549 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:26:23,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-12-22 16:26:23,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec0774ff/35f59632e58b4035902f983f2a86d475/FLAGb1e40ff4f [2021-12-22 16:26:23,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec0774ff/35f59632e58b4035902f983f2a86d475 [2021-12-22 16:26:23,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:26:23,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:26:23,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:26:23,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:26:23,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:26:23,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:26:23" (1/1) ... [2021-12-22 16:26:23,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66559011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:23, skipping insertion in model container [2021-12-22 16:26:23,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:26:23" (1/1) ... [2021-12-22 16:26:23,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:26:23,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:26:24,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:26:24,180 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:26:24,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:26:24,266 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:26:24,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24 WrapperNode [2021-12-22 16:26:24,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:26:24,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:26:24,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:26:24,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:26:24,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,325 INFO L137 Inliner]: procedures = 115, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2021-12-22 16:26:24,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:26:24,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:26:24,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:26:24,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:26:24,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:26:24,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:26:24,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:26:24,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:26:24,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (1/1) ... [2021-12-22 16:26:24,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:26:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:24,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 16:26:24,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 16:26:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 16:26:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 16:26:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 16:26:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:26:24,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:26:24,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:26:24,575 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:26:24,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:26:24,802 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:26:24,806 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:26:24,807 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 16:26:24,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:24 BoogieIcfgContainer [2021-12-22 16:26:24,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:26:24,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:26:24,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:26:24,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:26:24,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:26:23" (1/3) ... [2021-12-22 16:26:24,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6cfda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:26:24, skipping insertion in model container [2021-12-22 16:26:24,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:26:24" (2/3) ... [2021-12-22 16:26:24,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6cfda2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:26:24, skipping insertion in model container [2021-12-22 16:26:24,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:24" (3/3) ... [2021-12-22 16:26:24,818 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2021-12-22 16:26:24,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:26:24,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-22 16:26:24,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:26:24,882 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 16:26:24,882 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-22 16:26:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 16:26:24,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:24,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:24,911 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 119383862, now seen corresponding path program 1 times [2021-12-22 16:26:24,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:24,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028920052] [2021-12-22 16:26:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:24,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:25,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:25,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431948999] [2021-12-22 16:26:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:25,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:25,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:25,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:25,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 16:26:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:25,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 16:26:25,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:25,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:25,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:25,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:25,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028920052] [2021-12-22 16:26:25,270 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:25,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431948999] [2021-12-22 16:26:25,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431948999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:25,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:25,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:26:25,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987798783] [2021-12-22 16:26:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:25,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:26:25,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:26:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:26:25,310 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.7) internal successors, (34), 27 states have internal predecessors, (34), 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:25,364 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-22 16:26:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:26:25,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2021-12-22 16:26:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:25,373 INFO L225 Difference]: With dead ends: 28 [2021-12-22 16:26:25,373 INFO L226 Difference]: Without dead ends: 26 [2021-12-22 16:26:25,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:25,379 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:25,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 26 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:26:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-22 16:26:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-22 16:26:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-22 16:26:25,407 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2021-12-22 16:26:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:25,408 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-22 16:26:25,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:25,409 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-22 16:26:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:26:25,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:25,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:25,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:25,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-22 16:26:25,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:25,636 INFO L85 PathProgramCache]: Analyzing trace with hash -594066643, now seen corresponding path program 1 times [2021-12-22 16:26:25,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:25,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246879774] [2021-12-22 16:26:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:25,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:25,648 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:25,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156250866] [2021-12-22 16:26:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:25,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:25,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:25,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:25,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 16:26:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:25,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 16:26:25,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:25,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:26:25,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-22 16:26:25,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-22 16:26:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:25,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:25,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:25,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246879774] [2021-12-22 16:26:25,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:25,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156250866] [2021-12-22 16:26:25,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156250866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:25,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:25,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:26:25,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033034131] [2021-12-22 16:26:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:25,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:26:25,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:26:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:25,904 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:25,989 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-12-22 16:26:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:26:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) Word has length 9 [2021-12-22 16:26:25,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:25,992 INFO L225 Difference]: With dead ends: 31 [2021-12-22 16:26:25,997 INFO L226 Difference]: Without dead ends: 31 [2021-12-22 16:26:25,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:26:25,999 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:26,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 28 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:26:26,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-22 16:26:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-12-22 16:26:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-22 16:26:26,010 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2021-12-22 16:26:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:26,010 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-22 16:26:26,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-22 16:26:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 16:26:26,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:26,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:26,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:26,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-22 16:26:26,235 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash -594066644, now seen corresponding path program 1 times [2021-12-22 16:26:26,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:26,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064865089] [2021-12-22 16:26:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:26,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:26,246 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:26,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605893355] [2021-12-22 16:26:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:26,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:26,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:26,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:26,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 16:26:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:26,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 16:26:26,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:26,324 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:26:26,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-12-22 16:26:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:26,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:26,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064865089] [2021-12-22 16:26:26,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605893355] [2021-12-22 16:26:26,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605893355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:26,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:26,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:26:26,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416952124] [2021-12-22 16:26:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:26,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:26:26,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:26:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:26:26,343 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:26,366 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-12-22 16:26:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:26:26,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2021-12-22 16:26:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:26,368 INFO L225 Difference]: With dead ends: 26 [2021-12-22 16:26:26,368 INFO L226 Difference]: Without dead ends: 26 [2021-12-22 16:26:26,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:26:26,369 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:26,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:26:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-22 16:26:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-22 16:26:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-22 16:26:26,373 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 9 [2021-12-22 16:26:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:26,373 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-22 16:26:26,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-22 16:26:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 16:26:26,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:26,374 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:26,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:26,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:26,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1806384368, now seen corresponding path program 1 times [2021-12-22 16:26:26,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:26,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637363037] [2021-12-22 16:26:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:26,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:26,597 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:26,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322787022] [2021-12-22 16:26:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:26,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:26,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:26,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:26,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 16:26:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:26,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 16:26:26,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:26,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:26,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:26,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:26,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637363037] [2021-12-22 16:26:26,706 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:26,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322787022] [2021-12-22 16:26:26,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322787022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:26,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:26,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:26:26,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712818778] [2021-12-22 16:26:26,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:26,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:26:26,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:26,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:26:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:26,708 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:26,743 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-12-22 16:26:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:26:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2021-12-22 16:26:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:26,744 INFO L225 Difference]: With dead ends: 47 [2021-12-22 16:26:26,744 INFO L226 Difference]: Without dead ends: 47 [2021-12-22 16:26:26,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:26,745 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:26,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:26:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-22 16:26:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-12-22 16:26:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-22 16:26:26,749 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 13 [2021-12-22 16:26:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:26,750 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-22 16:26:26,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-22 16:26:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 16:26:26,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:26,751 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:26,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:26,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:26,964 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:26,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1787518350, now seen corresponding path program 1 times [2021-12-22 16:26:26,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:26,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861309158] [2021-12-22 16:26:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:26,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:26,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:26,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401762827] [2021-12-22 16:26:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:26,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:26,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:26,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:26,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 16:26:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:27,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-22 16:26:27,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:27,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:26:27,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-22 16:26:27,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-22 16:26:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:27,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:26:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:27,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:27,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861309158] [2021-12-22 16:26:27,440 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:27,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401762827] [2021-12-22 16:26:27,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401762827] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:26:27,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 16:26:27,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-22 16:26:27,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303766158] [2021-12-22 16:26:27,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 16:26:27,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:26:27,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:26:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:26:27,442 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:27,534 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-12-22 16:26:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:26:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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) Word has length 13 [2021-12-22 16:26:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:27,535 INFO L225 Difference]: With dead ends: 36 [2021-12-22 16:26:27,535 INFO L226 Difference]: Without dead ends: 36 [2021-12-22 16:26:27,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:26:27,536 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:27,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 28 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:26:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-22 16:26:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-12-22 16:26:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-22 16:26:27,540 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 13 [2021-12-22 16:26:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:27,540 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-22 16:26:27,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:27,541 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-22 16:26:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 16:26:27,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:27,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:27,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:27,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:27,754 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 768538716, now seen corresponding path program 1 times [2021-12-22 16:26:27,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146603375] [2021-12-22 16:26:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:27,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:27,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:27,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212529619] [2021-12-22 16:26:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:27,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:27,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:27,775 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) [2021-12-22 16:26:27,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 16:26:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:27,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 16:26:27,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:27,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:27,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:27,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146603375] [2021-12-22 16:26:27,961 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:27,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212529619] [2021-12-22 16:26:27,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212529619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:27,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:27,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 16:26:27,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119473169] [2021-12-22 16:26:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:27,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:26:27,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:26:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:26:27,963 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:28,023 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-12-22 16:26:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:26:28,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 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) Word has length 15 [2021-12-22 16:26:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:28,025 INFO L225 Difference]: With dead ends: 44 [2021-12-22 16:26:28,026 INFO L226 Difference]: Without dead ends: 44 [2021-12-22 16:26:28,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:26:28,029 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:28,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 46 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:26:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-22 16:26:28,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2021-12-22 16:26:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-12-22 16:26:28,042 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 15 [2021-12-22 16:26:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:28,043 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-12-22 16:26:28,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-12-22 16:26:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 16:26:28,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:28,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:28,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:28,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:28,264 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash 181732702, now seen corresponding path program 1 times [2021-12-22 16:26:28,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:28,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965239942] [2021-12-22 16:26:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:28,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:28,278 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:28,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252901300] [2021-12-22 16:26:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:28,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:28,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:28,286 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) [2021-12-22 16:26:28,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 16:26:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:28,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 16:26:28,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:26:28,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:28,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:28,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965239942] [2021-12-22 16:26:28,475 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:28,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252901300] [2021-12-22 16:26:28,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252901300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:28,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:28,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:26:28,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872882141] [2021-12-22 16:26:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:28,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 16:26:28,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:28,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 16:26:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-12-22 16:26:28,476 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:28,543 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-12-22 16:26:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:26:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 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) Word has length 15 [2021-12-22 16:26:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:28,544 INFO L225 Difference]: With dead ends: 41 [2021-12-22 16:26:28,544 INFO L226 Difference]: Without dead ends: 41 [2021-12-22 16:26:28,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-12-22 16:26:28,545 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:28,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:26:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-22 16:26:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2021-12-22 16:26:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-22 16:26:28,548 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 15 [2021-12-22 16:26:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:28,548 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-22 16:26:28,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-22 16:26:28,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 16:26:28,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:28,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:28,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:28,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:28,774 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1945105130, now seen corresponding path program 1 times [2021-12-22 16:26:28,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:28,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373423275] [2021-12-22 16:26:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:28,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:28,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:28,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109836876] [2021-12-22 16:26:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:28,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:28,791 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) [2021-12-22 16:26:28,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 16:26:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:28,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-22 16:26:28,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:28,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 16:26:28,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:28,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:28,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373423275] [2021-12-22 16:26:28,961 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:28,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109836876] [2021-12-22 16:26:28,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109836876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:28,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:28,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:26:28,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767997111] [2021-12-22 16:26:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:28,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:26:28,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:26:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:28,963 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:28,970 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-12-22 16:26:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:26:28,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-12-22 16:26:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:28,971 INFO L225 Difference]: With dead ends: 36 [2021-12-22 16:26:28,971 INFO L226 Difference]: Without dead ends: 34 [2021-12-22 16:26:28,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:28,972 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:28,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 47 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2021-12-22 16:26:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-22 16:26:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-12-22 16:26:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-22 16:26:28,975 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2021-12-22 16:26:28,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:28,975 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-22 16:26:28,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-22 16:26:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 16:26:28,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:28,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:29,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:29,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-22 16:26:29,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1945103590, now seen corresponding path program 1 times [2021-12-22 16:26:29,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:29,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10107684] [2021-12-22 16:26:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:29,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:29,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993520467] [2021-12-22 16:26:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:29,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:29,225 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) [2021-12-22 16:26:29,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 16:26:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:29,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 16:26:29,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:29,308 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 16:26:29,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-22 16:26:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 16:26:29,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:29,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:29,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10107684] [2021-12-22 16:26:29,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:29,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993520467] [2021-12-22 16:26:29,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993520467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:29,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:29,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:26:29,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017369690] [2021-12-22 16:26:29,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:29,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:26:29,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:26:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:26:29,341 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:29,353 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-12-22 16:26:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:26:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 16 [2021-12-22 16:26:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:29,354 INFO L225 Difference]: With dead ends: 32 [2021-12-22 16:26:29,354 INFO L226 Difference]: Without dead ends: 32 [2021-12-22 16:26:29,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:26:29,355 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:29,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:26:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-22 16:26:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-22 16:26:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-22 16:26:29,358 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2021-12-22 16:26:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-22 16:26:29,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-22 16:26:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 16:26:29,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:29,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:29,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:29,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:29,577 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:29,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1945103589, now seen corresponding path program 1 times [2021-12-22 16:26:29,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:29,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483289720] [2021-12-22 16:26:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:29,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:29,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:29,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069236469] [2021-12-22 16:26:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:29,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:29,588 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:29,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 16:26:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:29,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 16:26:29,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:29,705 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 16:26:29,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-22 16:26:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 16:26:29,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:29,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:29,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483289720] [2021-12-22 16:26:29,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:29,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069236469] [2021-12-22 16:26:29,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069236469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:29,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:29,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:26:29,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295032627] [2021-12-22 16:26:29,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:29,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:26:29,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:26:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:29,838 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:29,874 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-12-22 16:26:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:26:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) Word has length 16 [2021-12-22 16:26:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:29,876 INFO L225 Difference]: With dead ends: 34 [2021-12-22 16:26:29,876 INFO L226 Difference]: Without dead ends: 34 [2021-12-22 16:26:29,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:26:29,877 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:29,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2021-12-22 16:26:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-22 16:26:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-22 16:26:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-12-22 16:26:29,884 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 16 [2021-12-22 16:26:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:29,885 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-12-22 16:26:29,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-12-22 16:26:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:26:29,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:29,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:29,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:30,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 16:26:30,110 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:30,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 398462708, now seen corresponding path program 1 times [2021-12-22 16:26:30,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146617818] [2021-12-22 16:26:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:30,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:30,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452069394] [2021-12-22 16:26:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:30,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:30,121 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:30,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 16:26:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:30,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-22 16:26:30,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:26:30,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:26:30,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146617818] [2021-12-22 16:26:30,352 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452069394] [2021-12-22 16:26:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452069394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:26:30,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:26:30,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:26:30,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905041449] [2021-12-22 16:26:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:26:30,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:26:30,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:26:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:30,354 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:30,358 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2021-12-22 16:26:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:26:30,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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) Word has length 21 [2021-12-22 16:26:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:30,361 INFO L225 Difference]: With dead ends: 33 [2021-12-22 16:26:30,361 INFO L226 Difference]: Without dead ends: 31 [2021-12-22 16:26:30,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:26:30,362 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:30,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2021-12-22 16:26:30,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-22 16:26:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-22 16:26:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-12-22 16:26:30,365 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 21 [2021-12-22 16:26:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:30,365 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-22 16:26:30,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-12-22 16:26:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:26:30,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:26:30,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:30,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 16:26:30,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-22 16:26:30,585 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-22 16:26:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:26:30,585 INFO L85 PathProgramCache]: Analyzing trace with hash 398464249, now seen corresponding path program 1 times [2021-12-22 16:26:30,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:26:30,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070772024] [2021-12-22 16:26:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:30,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:26:30,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 16:26:30,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156069189] [2021-12-22 16:26:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:26:30,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:26:30,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:26:30,595 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:26:30,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 16:26:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:26:30,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 16:26:30,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:26:30,685 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 16:26:30,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-22 16:26:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 16:26:30,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:26:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 16:26:31,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:26:31,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070772024] [2021-12-22 16:26:31,141 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 16:26:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156069189] [2021-12-22 16:26:31,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156069189] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:26:31,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 16:26:31,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-12-22 16:26:31,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782221678] [2021-12-22 16:26:31,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 16:26:31,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 16:26:31,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:26:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 16:26:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:26:31,144 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:26:31,224 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-22 16:26:31,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:26:31,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 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) Word has length 21 [2021-12-22 16:26:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:26:31,224 INFO L225 Difference]: With dead ends: 30 [2021-12-22 16:26:31,225 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 16:26:31,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:26:31,225 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:26:31,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2021-12-22 16:26:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 16:26:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 16:26:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:31,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 16:26:31,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-12-22 16:26:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:26:31,226 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 16:26:31,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:26:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 16:26:31,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 16:26:31,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 7 remaining) [2021-12-22 16:26:31,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 7 remaining) [2021-12-22 16:26:31,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 7 remaining) [2021-12-22 16:26:31,229 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (3 of 7 remaining) [2021-12-22 16:26:31,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (2 of 7 remaining) [2021-12-22 16:26:31,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 7 remaining) [2021-12-22 16:26:31,230 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-12-22 16:26:31,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-22 16:26:31,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-22 16:26:31,434 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:26:31,435 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 16:26:31,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:26:31 BoogieIcfgContainer [2021-12-22 16:26:31,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 16:26:31,437 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 16:26:31,437 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 16:26:31,437 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 16:26:31,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:26:24" (3/4) ... [2021-12-22 16:26:31,440 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 16:26:31,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-22 16:26:31,448 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 16:26:31,449 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 16:26:31,449 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 16:26:31,481 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 16:26:31,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 16:26:31,481 INFO L158 Benchmark]: Toolchain (without parser) took 7582.68ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 77.6MB in the beginning and 48.0MB in the end (delta: 29.6MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2021-12-22 16:26:31,482 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:26:31,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.83ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 77.3MB in the end (delta: 20.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 16:26:31,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.10ms. Allocated memory is still 107.0MB. Free memory was 77.3MB in the beginning and 75.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:26:31,483 INFO L158 Benchmark]: Boogie Preprocessor took 43.27ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 16:26:31,483 INFO L158 Benchmark]: RCFGBuilder took 437.72ms. Allocated memory is still 107.0MB. Free memory was 74.1MB in the beginning and 62.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 16:26:31,484 INFO L158 Benchmark]: TraceAbstraction took 6627.28ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 62.3MB in the beginning and 51.1MB in the end (delta: 11.2MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2021-12-22 16:26:31,484 INFO L158 Benchmark]: Witness Printer took 43.77ms. Allocated memory is still 140.5MB. Free memory was 51.1MB in the beginning and 48.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 16:26:31,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.83ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 77.3MB in the end (delta: 20.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.10ms. Allocated memory is still 107.0MB. Free memory was 77.3MB in the beginning and 75.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.27ms. Allocated memory is still 107.0MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 437.72ms. Allocated memory is still 107.0MB. Free memory was 74.1MB in the beginning and 62.7MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6627.28ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 62.3MB in the beginning and 51.1MB in the end (delta: 11.2MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Witness Printer took 43.77ms. Allocated memory is still 140.5MB. Free memory was 51.1MB in the beginning and 48.0MB 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: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 303 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 199 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 192 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, InterpolantAutomatonStates: 67, 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, 12 MinimizatonAttempts, 33 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 192 ConstructedInterpolants, 29 QuantifiedInterpolants, 2375 SizeOfPredicates, 36 NumberOfNonLiveVariables, 944 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 13/21 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-22 16:26:31,532 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