./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-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+cfa-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 06227ec276f1d25f93ba083804945e6bbc61c8e5 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:49:39,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:49:39,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:49:39,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:49:39,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:49:39,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:49:39,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:49:39,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:49:39,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:49:39,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:49:39,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:49:39,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:49:39,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:49:39,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:49:39,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:49:39,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:49:39,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:49:39,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:49:39,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:49:39,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:49:39,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:49:39,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:49:39,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:49:39,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:49:39,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:49:39,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:49:39,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:49:39,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:49:39,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:49:39,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:49:39,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:49:39,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:49:39,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:49:39,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:49:39,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:49:39,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:49:39,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:49:39,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:49:39,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:49:39,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:49:39,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:49:39,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:49:39,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:49:39,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:49:39,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:49:39,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:49:39,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:49:39,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:49:39,197 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:49:39,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:49:39,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:49:39,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:49:39,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:49:39,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:49:39,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:49:39,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:49:39,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:49:39,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:49:39,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:49:39,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:49:39,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:49:39,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:49:39,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:49:39,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:49:39,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:49:39,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:49:39,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:49:39,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:49:39,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:49:39,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:49:39,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:49:39,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:49:39,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06227ec276f1d25f93ba083804945e6bbc61c8e5 [2021-08-26 03:49:39,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:49:39,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:49:39,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:49:39,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:49:39,557 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:49:39,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-08-26 03:49:39,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d248ba3fe/8926cfed5b7e48f6b532f36e1d81771f/FLAG7e41b75f7 [2021-08-26 03:49:40,105 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:49:40,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2021-08-26 03:49:40,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d248ba3fe/8926cfed5b7e48f6b532f36e1d81771f/FLAG7e41b75f7 [2021-08-26 03:49:40,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d248ba3fe/8926cfed5b7e48f6b532f36e1d81771f [2021-08-26 03:49:40,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:49:40,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:49:40,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:49:40,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:49:40,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:49:40,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:40,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4dcda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40, skipping insertion in model container [2021-08-26 03:49:40,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:40,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:49:40,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:49:40,854 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+cfa-reducer.c[7920,7933] [2021-08-26 03:49:40,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:49:40,868 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:49:40,922 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+cfa-reducer.c[7920,7933] [2021-08-26 03:49:40,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:49:40,945 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:49:40,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40 WrapperNode [2021-08-26 03:49:40,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:49:40,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:49:40,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:49:40,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:49:40,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:40,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:49:41,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:49:41,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:49:41,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:49:41,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:49:41,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:49:41,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:49:41,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:49:41,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (1/1) ... [2021-08-26 03:49:41,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:49:41,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:41,122 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 03:49:41,161 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 03:49:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-26 03:49:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-08-26 03:49:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:49:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:49:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:49:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:49:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 03:49:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 03:49:41,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:49:41,893 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-26 03:49:41,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:49:41 BoogieIcfgContainer [2021-08-26 03:49:41,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:49:41,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:49:41,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:49:41,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:49:41,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:49:40" (1/3) ... [2021-08-26 03:49:41,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c8bfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:49:41, skipping insertion in model container [2021-08-26 03:49:41,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:49:40" (2/3) ... [2021-08-26 03:49:41,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c8bfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:49:41, skipping insertion in model container [2021-08-26 03:49:41,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:49:41" (3/3) ... [2021-08-26 03:49:41,901 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2021-08-26 03:49:41,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:49:41,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:49:41,939 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:49:41,945 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 03:49:41,945 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:49:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 03:49:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 03:49:41,960 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:41,961 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:41,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:41,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1180906794, now seen corresponding path program 1 times [2021-08-26 03:49:41,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:41,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916096042] [2021-08-26 03:49:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:41,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:42,278 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 03:49:42,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:42,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916096042] [2021-08-26 03:49:42,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916096042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:49:42,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:49:42,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:49:42,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014121259] [2021-08-26 03:49:42,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:49:42,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:42,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:49:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:49:42,314 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 2.25) internal successors, (9), 4 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) [2021-08-26 03:49:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:42,390 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-08-26 03:49:42,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:49:42,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-08-26 03:49:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:42,398 INFO L225 Difference]: With dead ends: 30 [2021-08-26 03:49:42,398 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 03:49:42,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:49:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 03:49:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-08-26 03:49:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 03:49:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-08-26 03:49:42,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2021-08-26 03:49:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:42,427 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-08-26 03:49:42,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-08-26 03:49:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-08-26 03:49:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 03:49:42,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:42,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:42,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:49:42,429 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1181383450, now seen corresponding path program 1 times [2021-08-26 03:49:42,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:42,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600741014] [2021-08-26 03:49:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:42,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:42,574 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 03:49:42,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:42,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600741014] [2021-08-26 03:49:42,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600741014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:49:42,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:49:42,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:49:42,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178447771] [2021-08-26 03:49:42,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:49:42,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:49:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:49:42,577 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-08-26 03:49:42,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:42,614 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-26 03:49:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:49:42,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-08-26 03:49:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:42,615 INFO L225 Difference]: With dead ends: 30 [2021-08-26 03:49:42,615 INFO L226 Difference]: Without dead ends: 20 [2021-08-26 03:49:42,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 03:49:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-26 03:49:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-08-26 03:49:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 03:49:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-08-26 03:49:42,624 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2021-08-26 03:49:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:42,624 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-08-26 03:49:42,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-08-26 03:49:42,624 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-08-26 03:49:42,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 03:49:42,625 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:42,626 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:42,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 03:49:42,627 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:42,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:42,627 INFO L82 PathProgramCache]: Analyzing trace with hash -181774814, now seen corresponding path program 1 times [2021-08-26 03:49:42,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:42,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875130480] [2021-08-26 03:49:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:42,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:42,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:42,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875130480] [2021-08-26 03:49:42,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875130480] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:42,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645796825] [2021-08-26 03:49:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:42,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:42,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:42,821 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 03:49:42,823 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 03:49:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:43,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 03:49:43,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:49:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:43,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645796825] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:43,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:49:43,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-08-26 03:49:43,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689912602] [2021-08-26 03:49:43,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 03:49:43,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 03:49:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 03:49:43,292 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 03:49:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:43,406 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-08-26 03:49:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 03:49:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 [2021-08-26 03:49:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:43,407 INFO L225 Difference]: With dead ends: 36 [2021-08-26 03:49:43,407 INFO L226 Difference]: Without dead ends: 26 [2021-08-26 03:49:43,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 03:49:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-26 03:49:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2021-08-26 03:49:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 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 03:49:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-26 03:49:43,413 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2021-08-26 03:49:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:43,413 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-26 03:49:43,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 03:49:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-26 03:49:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 03:49:43,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:43,414 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:43,444 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 03:49:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:43,629 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:43,630 INFO L82 PathProgramCache]: Analyzing trace with hash -192165078, now seen corresponding path program 2 times [2021-08-26 03:49:43,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:43,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444744435] [2021-08-26 03:49:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:43,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:43,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:43,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444744435] [2021-08-26 03:49:43,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444744435] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:43,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17096268] [2021-08-26 03:49:43,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 03:49:43,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:43,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:43,761 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 03:49:43,762 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 03:49:43,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 03:49:43,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:49:43,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 03:49:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:49:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:44,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17096268] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:44,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:49:44,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-08-26 03:49:44,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318619911] [2021-08-26 03:49:44,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 03:49:44,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 03:49:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 03:49:44,090 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 03:49:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:44,219 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-08-26 03:49:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 03:49:44,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 [2021-08-26 03:49:44,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:44,220 INFO L225 Difference]: With dead ends: 42 [2021-08-26 03:49:44,220 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 03:49:44,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-26 03:49:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 03:49:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-08-26 03:49:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 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) [2021-08-26 03:49:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-08-26 03:49:44,225 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2021-08-26 03:49:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:44,225 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-08-26 03:49:44,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 03:49:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-08-26 03:49:44,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 03:49:44,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:49:44,226 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-26 03:49:44,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 03:49:44,443 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,SelfDestructingSolverStorable3 [2021-08-26 03:49:44,443 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:49:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:49:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash 125000242, now seen corresponding path program 3 times [2021-08-26 03:49:44,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:49:44,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779764353] [2021-08-26 03:49:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:49:44,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:49:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:49:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:49:44,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:49:44,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779764353] [2021-08-26 03:49:44,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779764353] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:44,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555534681] [2021-08-26 03:49:44,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 03:49:44,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:44,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:49:44,577 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 03:49:44,600 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 03:49:45,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 03:49:45,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 03:49:45,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 03:49:45,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:49:45,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-26 03:49:45,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-26 03:49:45,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 22 [2021-08-26 03:49:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-26 03:49:45,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555534681] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:49:45,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:49:45,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-08-26 03:49:45,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151218594] [2021-08-26 03:49:45,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 03:49:45,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:49:45,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 03:49:45,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-08-26 03:49:45,894 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 03:49:46,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:49:46,587 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-08-26 03:49:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 03:49:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 27 [2021-08-26 03:49:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:49:46,588 INFO L225 Difference]: With dead ends: 48 [2021-08-26 03:49:46,588 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:49:46,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 689.6ms TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2021-08-26 03:49:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:49:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:49:46,589 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 03:49:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:49:46,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-08-26 03:49:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:49:46,590 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:49:46,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 03:49:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:49:46,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:49:46,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:49:46,611 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 03:49:46,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:49:46,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:49:46,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:49:46,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:49:46,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:49:47,052 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 224) no Hoare annotation was computed. [2021-08-26 03:49:47,052 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L860 garLoopResultBuilder]: At program point L221(lines 133 225) the Hoare annotation is: true [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point L182(lines 182 217) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 222) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 209) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 210) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:49:47,053 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-08-26 03:49:47,054 INFO L853 garLoopResultBuilder]: At program point L216(lines 182 217) the Hoare annotation is: (let ((.cse6 (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse0 (= 4 (select .cse6 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 268)))) (.cse1 (= (select .cse6 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse2 (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0.offset| 0)) (.cse3 (= ~Id_MCDC_93~0 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0)) (.cse4 (= ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0 1)) (.cse5 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 0)) (and .cse0 (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) (< (mod ~Id_MCDC_93~0 4294967296) 42) .cse1 .cse2 .cse3 .cse4 .cse5)))) [2021-08-26 03:49:47,054 INFO L853 garLoopResultBuilder]: At program point L204(lines 167 223) the Hoare annotation is: (let ((.cse6 (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.base|))) (let ((.cse2 (= 4 (select .cse6 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 268)))) (.cse3 (= (select .cse6 (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0)) (.cse4 (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0.offset| 0)) (.cse5 (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0))) (or (let ((.cse0 (mod (+ 4294967295 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) 4294967296)) (.cse1 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (and (not (= (* 12 .cse0) 492)) (not (= (* 12 .cse1) 492)) .cse2 (< .cse0 42) (< .cse1 42) .cse3 .cse4 .cse5)) (and .cse2 .cse3 .cse4 (= ~Id_MCDC_93~0 0) .cse5 (= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 0)) (and .cse2 (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= ~Id_MCDC_93~0 1) .cse3 .cse4 (<= ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0 1) (<= 1 ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0) .cse5)))) [2021-08-26 03:49:47,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:49:47,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:49:47 BoogieIcfgContainer [2021-08-26 03:49:47,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:49:47,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:49:47,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:49:47,072 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:49:47,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:49:41" (3/4) ... [2021-08-26 03:49:47,075 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:49:47,085 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-08-26 03:49:47,086 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 03:49:47,086 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-26 03:49:47,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:49:47,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:49:47,244 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:49:47,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:49:47,245 INFO L168 Benchmark]: Toolchain (without parser) took 6639.42 ms. Allocated memory was 62.9 MB in the beginning and 138.4 MB in the end (delta: 75.5 MB). Free memory was 42.9 MB in the beginning and 96.6 MB in the end (delta: -53.6 MB). Peak memory consumption was 80.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,245 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:49:47,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.04 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 41.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.81 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 37.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,246 INFO L168 Benchmark]: Boogie Preprocessor took 64.23 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 34.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,246 INFO L168 Benchmark]: RCFGBuilder took 811.13 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 34.6 MB in the beginning and 54.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,246 INFO L168 Benchmark]: TraceAbstraction took 5175.74 ms. Allocated memory was 79.7 MB in the beginning and 138.4 MB in the end (delta: 58.7 MB). Free memory was 54.1 MB in the beginning and 81.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,247 INFO L168 Benchmark]: Witness Printer took 172.23 ms. Allocated memory is still 138.4 MB. Free memory was 81.8 MB in the beginning and 96.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-08-26 03:49:47,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.04 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 41.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.81 ms. Allocated memory is still 62.9 MB. Free memory was 41.2 MB in the beginning and 37.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.23 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 34.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 811.13 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 34.6 MB in the beginning and 54.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5175.74 ms. Allocated memory was 79.7 MB in the beginning and 138.4 MB in the end (delta: 58.7 MB). Free memory was 54.1 MB in the beginning and 81.8 MB in the end (delta: -27.7 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. * Witness Printer took 172.23 ms. Allocated memory is still 138.4 MB. Free memory was 81.8 MB in the beginning and 96.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 42.6 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: 193]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5119.3ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 9.7ms, AutomataDifference: 1086.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 254.6ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 172 SDslu, 129 SDs, 0 SdLazy, 206 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 300.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 920.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 17 NumberOfFragments, 211 HoareAnnotationTreeSize, 3 FomulaSimplifications, 757 FormulaSimplificationTreeSizeReduction, 31.2ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 321 FormulaSimplificationTreeSizeReductionInter, 217.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 146.4ms SsaConstructionTime, 1117.1ms SatisfiabilityAnalysisTime, 1396.4ms InterpolantComputationTime, 144 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 913 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 40/108 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: 133]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: ((((((4 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 268] && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) && Id_MCDC_89____CPAchecker_TMP_1 == 1) && Id_MCDC_89__Id_MCDC_95 == 0) && Id_MCDC_89__Id_MCDC_96 == 0) || (((((((4 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 268] && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && Id_MCDC_93 % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && Id_MCDC_93 == Id_MCDC_89__Id_MCDC_96) && Id_MCDC_89____CPAchecker_TMP_1 == 1) && Id_MCDC_89__Id_MCDC_95 == 0) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((((((!(12 * ((4294967295 + Id_MCDC_89__Id_MCDC_96) % 4294967296) == 492) && !(12 * ((Id_MCDC_93 + 4294967295) % 4294967296) == 492)) && 4 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 268]) && (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) && main__Id_MCDC_119 == 0) && Id_MCDC_89__Id_MCDC_95 == 0) || (((((4 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 268] && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && Id_MCDC_93 == 0) && Id_MCDC_89__Id_MCDC_95 == 0) && Id_MCDC_89__Id_MCDC_96 == 0)) || (((((((4 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 268] && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_93 <= 1) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && main__Id_MCDC_119 == 0) && Id_MCDC_89__Id_MCDC_96 <= 1) && 1 <= Id_MCDC_89__Id_MCDC_96) && Id_MCDC_89__Id_MCDC_95 == 0) RESULT: Ultimate proved your program to be correct! [2021-08-26 03:49:47,268 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...