./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f5206a7e4e942d454725b9f342ce661ec086ef2 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:50:06,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:50:06,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:50:06,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:50:06,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:50:06,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:50:06,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:50:06,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:50:06,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:50:06,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:50:06,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:50:06,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:50:06,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:50:06,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:50:06,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:50:06,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:50:06,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:50:06,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:50:06,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:50:06,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:50:06,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:50:06,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:50:06,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:50:06,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:50:06,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:50:06,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:50:06,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:50:06,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:50:06,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:50:06,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:50:06,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:50:06,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:50:06,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:50:06,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:50:06,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:50:06,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:50:06,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:50:06,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:50:06,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:50:06,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:50:06,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:50:06,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:50:06,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:50:06,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:50:06,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:50:06,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:50:06,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:50:06,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:50:06,681 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:50:06,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:50:06,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:50:06,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:50:06,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:50:06,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:50:06,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:50:06,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:50:06,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:50:06,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:50:06,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:50:06,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:50:06,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:50:06,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:50:06,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:50:06,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:50:06,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:50:06,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:50:06,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:50:06,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:50:06,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:50:06,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:50:06,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:50:06,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:50:06,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f5206a7e4e942d454725b9f342ce661ec086ef2 [2021-08-26 03:50:07,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:50:07,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:50:07,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:50:07,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:50:07,029 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:50:07,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-08-26 03:50:07,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89e450546/7c8af4eddf5b4beb8780045e88de3900/FLAG2d6cd0d6b [2021-08-26 03:50:07,649 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:50:07,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-08-26 03:50:07,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89e450546/7c8af4eddf5b4beb8780045e88de3900/FLAG2d6cd0d6b [2021-08-26 03:50:08,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89e450546/7c8af4eddf5b4beb8780045e88de3900 [2021-08-26 03:50:08,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:50:08,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:50:08,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:50:08,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:50:08,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:50:08,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2a869f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08, skipping insertion in model container [2021-08-26 03:50:08,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:50:08,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:50:08,430 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-08-26 03:50:08,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:50:08,451 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:50:08,564 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-08-26 03:50:08,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:50:08,588 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:50:08,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08 WrapperNode [2021-08-26 03:50:08,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:50:08,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:50:08,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:50:08,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:50:08,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:50:08,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:50:08,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:50:08,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:50:08,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:50:08,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:50:08,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:50:08,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:50:08,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (1/1) ... [2021-08-26 03:50:08,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:50:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:50:08,775 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) [2021-08-26 03:50:08,786 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 [2021-08-26 03:50:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 03:50:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-08-26 03:50:08,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:50:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:50:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:50:08,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:50:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 03:50:08,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 03:50:09,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:50:09,718 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 03:50:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:50:09 BoogieIcfgContainer [2021-08-26 03:50:09,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:50:09,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:50:09,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:50:09,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:50:09,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:50:08" (1/3) ... [2021-08-26 03:50:09,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78106a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:50:09, skipping insertion in model container [2021-08-26 03:50:09,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:50:08" (2/3) ... [2021-08-26 03:50:09,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78106a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:50:09, skipping insertion in model container [2021-08-26 03:50:09,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:50:09" (3/3) ... [2021-08-26 03:50:09,732 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2021-08-26 03:50:09,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:50:09,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:50:09,773 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:50:09,779 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 03:50:09,779 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:50:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 49 states have internal predecessors, (91), 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) [2021-08-26 03:50:09,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 03:50:09,795 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:50:09,795 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:50:09,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:50:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:50:09,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1997100867, now seen corresponding path program 1 times [2021-08-26 03:50:09,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:50:09,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007059983] [2021-08-26 03:50:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:50:09,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:50:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:50:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:50:10,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:50:10,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007059983] [2021-08-26 03:50:10,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007059983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:50:10,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:50:10,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-26 03:50:10,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975828841] [2021-08-26 03:50:10,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-26 03:50:10,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:50:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-26 03:50:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-08-26 03:50:10,588 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 49 states have internal predecessors, (91), 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 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) [2021-08-26 03:50:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:50:11,229 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2021-08-26 03:50:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 03:50:11,231 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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 44 [2021-08-26 03:50:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:50:11,237 INFO L225 Difference]: With dead ends: 95 [2021-08-26 03:50:11,238 INFO L226 Difference]: Without dead ends: 53 [2021-08-26 03:50:11,240 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 343.6ms TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-08-26 03:50:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-26 03:50:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-08-26 03:50:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 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) [2021-08-26 03:50:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-26 03:50:11,265 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 44 [2021-08-26 03:50:11,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:50:11,266 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-26 03:50:11,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) [2021-08-26 03:50:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-26 03:50:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-26 03:50:11,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:50:11,268 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:50:11,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:50:11,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:50:11,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:50:11,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1678604412, now seen corresponding path program 1 times [2021-08-26 03:50:11,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:50:11,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557365172] [2021-08-26 03:50:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:50:11,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:50:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:50:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:50:11,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:50:11,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557365172] [2021-08-26 03:50:11,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557365172] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:11,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694289393] [2021-08-26 03:50:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:50:11,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:50:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:50:11,824 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) [2021-08-26 03:50:11,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:50:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:50:12,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 03:50:12,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:50:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:50:12,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694289393] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:12,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:50:12,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 20 [2021-08-26 03:50:12,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555621738] [2021-08-26 03:50:12,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-26 03:50:12,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:50:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-26 03:50:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-08-26 03:50:12,641 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 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) [2021-08-26 03:50:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:50:13,264 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-08-26 03:50:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 03:50:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 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 49 [2021-08-26 03:50:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:50:13,266 INFO L225 Difference]: With dead ends: 61 [2021-08-26 03:50:13,266 INFO L226 Difference]: Without dead ends: 58 [2021-08-26 03:50:13,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 387.9ms TimeCoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2021-08-26 03:50:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-26 03:50:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2021-08-26 03:50:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 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) [2021-08-26 03:50:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-08-26 03:50:13,273 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 49 [2021-08-26 03:50:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:50:13,273 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-08-26 03:50:13,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 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) [2021-08-26 03:50:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-08-26 03:50:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-26 03:50:13,275 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:50:13,275 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:50:13,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:50:13,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:50:13,497 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:50:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:50:13,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1430637853, now seen corresponding path program 2 times [2021-08-26 03:50:13,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:50:13,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051938179] [2021-08-26 03:50:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:50:13,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:50:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:50:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:50:13,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:50:13,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051938179] [2021-08-26 03:50:13,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051938179] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:13,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751391946] [2021-08-26 03:50:13,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:50:13,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:50:13,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:50:13,906 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) [2021-08-26 03:50:13,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 03:50:14,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:50:14,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:50:14,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 03:50:14,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:50:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:50:14,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751391946] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:14,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:50:14,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 21 [2021-08-26 03:50:14,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755293869] [2021-08-26 03:50:14,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-26 03:50:14,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:50:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-26 03:50:14,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-08-26 03:50:14,987 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 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) [2021-08-26 03:50:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:50:15,693 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-08-26 03:50:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 03:50:15,695 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 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 54 [2021-08-26 03:50:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:50:15,695 INFO L225 Difference]: With dead ends: 66 [2021-08-26 03:50:15,696 INFO L226 Difference]: Without dead ends: 63 [2021-08-26 03:50:15,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 390.3ms TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2021-08-26 03:50:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-08-26 03:50:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-08-26 03:50:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 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) [2021-08-26 03:50:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-08-26 03:50:15,700 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 54 [2021-08-26 03:50:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:50:15,701 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-08-26 03:50:15,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 21 states have internal predecessors, (77), 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) [2021-08-26 03:50:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-08-26 03:50:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-26 03:50:15,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:50:15,703 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:50:15,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-26 03:50:15,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 03:50:15,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:50:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:50:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash 994778916, now seen corresponding path program 3 times [2021-08-26 03:50:15,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:50:15,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872587201] [2021-08-26 03:50:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:50:15,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:50:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:50:16,360 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:50:16,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:50:16,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872587201] [2021-08-26 03:50:16,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872587201] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:16,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058622194] [2021-08-26 03:50:16,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:50:16,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:50:16,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:50:16,365 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) [2021-08-26 03:50:16,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 03:50:17,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 03:50:17,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:50:17,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 03:50:17,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:50:17,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:50:17,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-08-26 03:50:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 03:50:17,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058622194] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:50:17,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:50:17,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2021-08-26 03:50:17,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073387777] [2021-08-26 03:50:17,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-26 03:50:17,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:50:17,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-26 03:50:17,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-08-26 03:50:17,893 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 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) [2021-08-26 03:50:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:50:19,913 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2021-08-26 03:50:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-26 03:50:19,914 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 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 59 [2021-08-26 03:50:19,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:50:19,915 INFO L225 Difference]: With dead ends: 68 [2021-08-26 03:50:19,915 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:50:19,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1668.5ms TimeCoverageRelationStatistics Valid=320, Invalid=2436, Unknown=0, NotChecked=0, Total=2756 [2021-08-26 03:50:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:50:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:50:19,916 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) [2021-08-26 03:50:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:50:19,916 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-08-26 03:50:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:50:19,917 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:50:19,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 28 states have internal predecessors, (109), 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) [2021-08-26 03:50:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:50:19,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:50:19,919 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:50:19,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 03:50:20,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:50:20,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:50:20,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:50:20,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 604) no Hoare annotation was computed. [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L192(lines 192 622) no Hoare annotation was computed. [2021-08-26 03:50:20,257 INFO L853 garLoopResultBuilder]: At program point L448(lines 408 481) the Hoare annotation is: (let ((.cse1 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (let ((.cse3 (< .cse1 42)) (.cse4 (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse5 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0))) (or (let ((.cse2 (mod (+ 4294967295 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296))) (let ((.cse0 (* 12 .cse2))) (and (not (= .cse0 492)) (not (= (* 12 .cse1) 492)) (= ~__tmp_1075_2~0.offset .cse0) (< .cse2 42) .cse3 .cse4 .cse5))) (and (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 9) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= 9 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) .cse3 .cse4 .cse5 (<= ~Id_MCDC_93~0 9))))) [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 628) no Hoare annotation was computed. [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L440(lines 440 453) no Hoare annotation was computed. [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L407(lines 407 485) no Hoare annotation was computed. [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L374(lines 374 503) no Hoare annotation was computed. [2021-08-26 03:50:20,257 INFO L857 garLoopResultBuilder]: For program point L465(lines 465 473) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 509) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 599) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 587) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 605) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L210(lines 210 611) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L433(lines 433 454) no Hoare annotation was computed. [2021-08-26 03:50:20,258 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 486) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L425(lines 425 475) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 492) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 582) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L860 garLoopResultBuilder]: At program point L632(lines 136 636) the Hoare annotation is: true [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L277(lines 277 570) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 588) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L467(line 467) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L236(lines 236 594) no Hoare annotation was computed. [2021-08-26 03:50:20,259 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 565) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 553) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L270(lines 270 571) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 577) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L312(lines 312 548) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L329(lines 329 536) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 554) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 635) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 560) no Hoare annotation was computed. [2021-08-26 03:50:20,260 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 467) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 531) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 519) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 537) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L314(lines 314 543) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 633) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 514) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 621) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L381(lines 381 502) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 520) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 526) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 616) no Hoare annotation was computed. [2021-08-26 03:50:20,261 INFO L857 garLoopResultBuilder]: For program point L423(lines 423 480) no Hoare annotation was computed. [2021-08-26 03:50:20,262 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 497) no Hoare annotation was computed. [2021-08-26 03:50:20,264 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:50:20,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:50:20 BoogieIcfgContainer [2021-08-26 03:50:20,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:50:20,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:50:20,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:50:20,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:50:20,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:50:09" (3/4) ... [2021-08-26 03:50:20,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:50:20,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 59 nodes and edges [2021-08-26 03:50:20,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-08-26 03:50:20,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:50:20,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 03:50:20,301 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:50:20,490 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:50:20,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:50:20,492 INFO L168 Benchmark]: Toolchain (without parser) took 12418.60 ms. Allocated memory was 56.6 MB in the beginning and 188.7 MB in the end (delta: 132.1 MB). Free memory was 32.8 MB in the beginning and 125.9 MB in the end (delta: -93.0 MB). Peak memory consumption was 114.3 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,492 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:50:20,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.10 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.7 MB in the beginning and 46.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.80 ms. Allocated memory is still 73.4 MB. Free memory was 46.2 MB in the beginning and 41.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,493 INFO L168 Benchmark]: Boogie Preprocessor took 58.37 ms. Allocated memory is still 73.4 MB. Free memory was 41.7 MB in the beginning and 51.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,493 INFO L168 Benchmark]: RCFGBuilder took 980.10 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 51.8 MB in the beginning and 48.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,494 INFO L168 Benchmark]: TraceAbstraction took 10550.86 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 47.7 MB in the beginning and 96.3 MB in the end (delta: -48.6 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,494 INFO L168 Benchmark]: Witness Printer took 211.20 ms. Allocated memory is still 188.7 MB. Free memory was 96.3 MB in the beginning and 125.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:50:20,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 515.10 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 32.7 MB in the beginning and 46.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.80 ms. Allocated memory is still 73.4 MB. Free memory was 46.2 MB in the beginning and 41.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.37 ms. Allocated memory is still 73.4 MB. Free memory was 41.7 MB in the beginning and 51.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 980.10 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 51.8 MB in the beginning and 48.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10550.86 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 47.7 MB in the beginning and 96.3 MB in the end (delta: -48.6 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Witness Printer took 211.20 ms. Allocated memory is still 188.7 MB. Free memory was 96.3 MB in the beginning and 125.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 467]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10492.5ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 11.6ms, AutomataDifference: 4032.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 127.5ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 113 SDtfs, 371 SDslu, 1308 SDs, 0 SdLazy, 2435 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1871.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2790.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=3, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 19 NumberOfFragments, 94 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 17.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 209 FormulaSimplificationTreeSizeReductionInter, 104.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 194.8ms SsaConstructionTime, 1413.4ms SatisfiabilityAnalysisTime, 3507.2ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 2858 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2125 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 408]: Loop Invariant Derived loop invariant: ((((((!(12 * ((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296) == 492) && !(12 * ((Id_MCDC_93 + 4294967295) % 4294967296) == 492)) && __tmp_1075_2 == 12 * ((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296)) && (4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296 < 42) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0) || ((((((Id_MCDC_89__Id_MCDC_96 <= 9 && 0 < Id_MCDC_93 / 4294967296 + 1) && 9 <= Id_MCDC_89__Id_MCDC_96) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_89__Id_MCDC_95 == 0) && Id_MCDC_93 <= 9) RESULT: Ultimate proved your program to be correct! [2021-08-26 03:50:20,527 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...