./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0 --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 f5f17f058e96bd5c46baa242826f383c90eaddfa4dbca636ab924160b7cdb4ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:41:57,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:41:57,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:41:57,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:41:57,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:41:57,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:41:57,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:41:57,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:41:57,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:41:57,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:41:57,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:41:57,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:41:57,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:41:57,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:41:57,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:41:57,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:41:57,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:41:57,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:41:57,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:41:57,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:41:57,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:41:57,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:41:57,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:41:57,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:41:57,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:41:57,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:41:57,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:41:57,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:41:57,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:41:57,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:41:57,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:41:57,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:41:57,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:41:57,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:41:57,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:41:57,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:41:57,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:41:57,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:41:57,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:41:57,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:41:57,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:41:57,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:41:57,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:41:57,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:41:57,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:41:57,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:41:57,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:41:57,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:41:57,287 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:41:57,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:41:57,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:41:57,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:41:57,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:41:57,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:41:57,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:41:57,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:41:57,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:41:57,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:41:57,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:41:57,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:41:57,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:41:57,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:41:57,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:41:57,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:41:57,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:41:57,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:41:57,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:41:57,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:41:57,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:41:57,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:41:57,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:41:57,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:41:57,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:41:57,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:41:57,295 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5f17f058e96bd5c46baa242826f383c90eaddfa4dbca636ab924160b7cdb4ab [2021-11-22 15:41:57,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:41:57,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:41:57,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:41:57,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:41:57,658 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:41:57,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-fpi/brs2f.c [2021-11-22 15:41:57,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/data/9ed6db24a/3f6025959b0a40868d383459ba8cdf35/FLAG4a495a0ac [2021-11-22 15:41:58,134 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:41:58,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/sv-benchmarks/c/array-fpi/brs2f.c [2021-11-22 15:41:58,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/data/9ed6db24a/3f6025959b0a40868d383459ba8cdf35/FLAG4a495a0ac [2021-11-22 15:41:58,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/data/9ed6db24a/3f6025959b0a40868d383459ba8cdf35 [2021-11-22 15:41:58,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:41:58,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:41:58,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:41:58,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:41:58,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:41:58,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e33925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58, skipping insertion in model container [2021-11-22 15:41:58,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:41:58,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:41:58,767 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/sv-benchmarks/c/array-fpi/brs2f.c[588,601] [2021-11-22 15:41:58,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:41:58,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:41:58,808 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/sv-benchmarks/c/array-fpi/brs2f.c[588,601] [2021-11-22 15:41:58,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:41:58,830 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:41:58,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58 WrapperNode [2021-11-22 15:41:58,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:41:58,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:41:58,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:41:58,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:41:58,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,887 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2021-11-22 15:41:58,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:41:58,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:41:58,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:41:58,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:41:58,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:41:58,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:41:58,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:41:58,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:41:58,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (1/1) ... [2021-11-22 15:41:58,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:41:58,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:41:58,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:41:59,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:41:59,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:41:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:41:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:41:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:41:59,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:41:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:41:59,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:41:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:41:59,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:41:59,118 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:41:59,121 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:41:59,320 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:41:59,326 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:41:59,326 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:41:59,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:59 BoogieIcfgContainer [2021-11-22 15:41:59,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:41:59,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:41:59,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:41:59,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:41:59,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:41:58" (1/3) ... [2021-11-22 15:41:59,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e07a856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:41:59, skipping insertion in model container [2021-11-22 15:41:59,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:41:58" (2/3) ... [2021-11-22 15:41:59,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e07a856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:41:59, skipping insertion in model container [2021-11-22 15:41:59,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:59" (3/3) ... [2021-11-22 15:41:59,338 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2021-11-22 15:41:59,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:41:59,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:41:59,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:41:59,430 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:41:59,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:41:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2021-11-22 15:41:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:41:59,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:59,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:59,466 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2021-11-22 15:41:59,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:59,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120840336] [2021-11-22 15:41:59,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:59,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:59,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120840336] [2021-11-22 15:41:59,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120840336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:59,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:59,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:41:59,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64564163] [2021-11-22 15:41:59,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:59,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:41:59,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:59,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:41:59,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:41:59,665 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-22 15:41:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:59,680 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2021-11-22 15:41:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:41:59,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-22 15:41:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:59,690 INFO L225 Difference]: With dead ends: 36 [2021-11-22 15:41:59,690 INFO L226 Difference]: Without dead ends: 16 [2021-11-22 15:41:59,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:41:59,697 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:59,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:41:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-22 15:41:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-22 15:41:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2021-11-22 15:41:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-22 15:41:59,731 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2021-11-22 15:41:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:59,732 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-22 15:41:59,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-22 15:41:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-22 15:41:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:41:59,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:59,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:59,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:41:59,734 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2021-11-22 15:41:59,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:59,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567142106] [2021-11-22 15:41:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:59,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:41:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:41:59,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:41:59,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567142106] [2021-11-22 15:41:59,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567142106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:41:59,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:41:59,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:41:59,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960449818] [2021-11-22 15:41:59,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:41:59,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:41:59,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:41:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:41:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:41:59,825 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-22 15:41:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:41:59,910 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-22 15:41:59,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:41:59,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-22 15:41:59,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:41:59,911 INFO L225 Difference]: With dead ends: 33 [2021-11-22 15:41:59,912 INFO L226 Difference]: Without dead ends: 22 [2021-11-22 15:41:59,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:41:59,915 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:41:59,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 12 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:41:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-22 15:41:59,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-11-22 15:41:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2021-11-22 15:41:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-22 15:41:59,926 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2021-11-22 15:41:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:41:59,928 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-22 15:41:59,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-22 15:41:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-22 15:41:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 15:41:59,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:41:59,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:41:59,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:41:59,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:41:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:41:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2021-11-22 15:41:59,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:41:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841231805] [2021-11-22 15:41:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:41:59,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:41:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:42:00,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:00,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841231805] [2021-11-22 15:42:00,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841231805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:00,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:00,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:42:00,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98731316] [2021-11-22 15:42:00,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:00,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:42:00,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:00,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:42:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:42:00,112 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-11-22 15:42:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:00,201 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-22 15:42:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) Word has length 17 [2021-11-22 15:42:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:00,203 INFO L225 Difference]: With dead ends: 27 [2021-11-22 15:42:00,203 INFO L226 Difference]: Without dead ends: 23 [2021-11-22 15:42:00,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:42:00,205 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:00,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-22 15:42:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-22 15:42:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-11-22 15:42:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-22 15:42:00,211 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2021-11-22 15:42:00,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:00,212 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-22 15:42:00,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-11-22 15:42:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-22 15:42:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:42:00,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:00,213 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:42:00,214 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2021-11-22 15:42:00,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:00,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498979732] [2021-11-22 15:42:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:00,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:00,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:00,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498979732] [2021-11-22 15:42:00,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498979732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:42:00,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069388052] [2021-11-22 15:42:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:00,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:00,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:00,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:00,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:42:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:00,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:42:00,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:00,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:00,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069388052] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:00,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:42:00,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-22 15:42:00,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636366595] [2021-11-22 15:42:00,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:00,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 15:42:00,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:00,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 15:42:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:42:00,700 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-11-22 15:42:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:00,832 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2021-11-22 15:42:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:42:00,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 20 [2021-11-22 15:42:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:00,833 INFO L225 Difference]: With dead ends: 43 [2021-11-22 15:42:00,834 INFO L226 Difference]: Without dead ends: 29 [2021-11-22 15:42:00,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:42:00,843 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:00,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-22 15:42:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-11-22 15:42:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 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) [2021-11-22 15:42:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-22 15:42:00,856 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2021-11-22 15:42:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:00,856 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-22 15:42:00,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-11-22 15:42:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-22 15:42:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:42:00,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:00,857 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:00,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:01,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:01,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:01,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:01,085 INFO L85 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2021-11-22 15:42:01,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:01,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068071147] [2021-11-22 15:42:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:01,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:01,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068071147] [2021-11-22 15:42:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068071147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:42:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922534921] [2021-11-22 15:42:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:01,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:01,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:01,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:42:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:01,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 15:42:01,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:01,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 15:42:01,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:42:01,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-22 15:42:02,072 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-22 15:42:02,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 29 [2021-11-22 15:42:02,248 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-22 15:42:02,249 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 57 treesize of output 39 [2021-11-22 15:42:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:02,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:04,411 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) (* 2 c_~N~0))) is different from false [2021-11-22 15:42:05,202 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (* 2 c_~N~0))) is different from false [2021-11-22 15:42:05,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2021-11-22 15:42:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-22 15:42:05,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922534921] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:05,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:42:05,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2021-11-22 15:42:05,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081740528] [2021-11-22 15:42:05,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:05,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-22 15:42:05,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-22 15:42:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=626, Unknown=2, NotChecked=106, Total=870 [2021-11-22 15:42:05,347 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 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) [2021-11-22 15:42:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:05,939 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2021-11-22 15:42:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 15:42:05,941 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 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) Word has length 23 [2021-11-22 15:42:05,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:05,941 INFO L225 Difference]: With dead ends: 51 [2021-11-22 15:42:05,942 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 15:42:05,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=228, Invalid=1038, Unknown=2, NotChecked=138, Total=1406 [2021-11-22 15:42:05,943 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:05,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 73 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 317 Invalid, 0 Unknown, 69 Unchecked, 0.3s Time] [2021-11-22 15:42:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 15:42:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-11-22 15:42:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-11-22 15:42:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-22 15:42:05,949 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2021-11-22 15:42:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:05,949 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-22 15:42:05,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 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) [2021-11-22 15:42:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-22 15:42:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:42:05,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:05,957 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:05,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:06,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:06,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:06,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2021-11-22 15:42:06,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:06,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104581307] [2021-11-22 15:42:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:06,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:06,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104581307] [2021-11-22 15:42:06,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104581307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:42:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980658329] [2021-11-22 15:42:06,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:42:06,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:06,262 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:06,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:42:06,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:42:06,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:42:06,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:42:06,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:06,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:06,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980658329] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:06,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:42:06,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-22 15:42:06,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590863672] [2021-11-22 15:42:06,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:06,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 15:42:06,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 15:42:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:42:06,492 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-11-22 15:42:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:06,608 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-11-22 15:42:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:42:06,609 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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 26 [2021-11-22 15:42:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:06,610 INFO L225 Difference]: With dead ends: 49 [2021-11-22 15:42:06,610 INFO L226 Difference]: Without dead ends: 34 [2021-11-22 15:42:06,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-22 15:42:06,611 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:06,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-22 15:42:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-22 15:42:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-11-22 15:42:06,617 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2021-11-22 15:42:06,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:06,617 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-11-22 15:42:06,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2021-11-22 15:42:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-11-22 15:42:06,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-22 15:42:06,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:06,619 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:06,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:06,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:06,833 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:42:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1507669223, now seen corresponding path program 3 times [2021-11-22 15:42:06,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:06,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255080096] [2021-11-22 15:42:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:06,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:42:06,871 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:42:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:42:06,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:42:06,925 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:42:06,926 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 15:42:06,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:42:06,937 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2021-11-22 15:42:06,940 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:42:07,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:42:07 BoogieIcfgContainer [2021-11-22 15:42:07,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:42:07,008 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:42:07,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:42:07,009 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:42:07,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:41:59" (3/4) ... [2021-11-22 15:42:07,012 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 15:42:07,066 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4870e86-30d3-4592-b188-d6d26b91dfe8/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:42:07,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:42:07,067 INFO L158 Benchmark]: Toolchain (without parser) took 8531.80ms. Allocated memory was 79.7MB in the beginning and 136.3MB in the end (delta: 56.6MB). Free memory was 41.1MB in the beginning and 97.7MB in the end (delta: -56.6MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-11-22 15:42:07,067 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 79.7MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:42:07,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.00ms. Allocated memory was 79.7MB in the beginning and 113.2MB in the end (delta: 33.6MB). Free memory was 40.9MB in the beginning and 86.7MB in the end (delta: -45.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2021-11-22 15:42:07,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.47ms. Allocated memory is still 113.2MB. Free memory was 86.7MB in the beginning and 85.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:42:07,068 INFO L158 Benchmark]: Boogie Preprocessor took 59.43ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 83.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:42:07,068 INFO L158 Benchmark]: RCFGBuilder took 380.81ms. Allocated memory is still 113.2MB. Free memory was 83.9MB in the beginning and 73.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:42:07,069 INFO L158 Benchmark]: TraceAbstraction took 7676.57ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 73.2MB in the beginning and 100.9MB in the end (delta: -27.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:42:07,069 INFO L158 Benchmark]: Witness Printer took 57.52ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 97.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 15:42:07,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 79.7MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.00ms. Allocated memory was 79.7MB in the beginning and 113.2MB in the end (delta: 33.6MB). Free memory was 40.9MB in the beginning and 86.7MB in the end (delta: -45.9MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.47ms. Allocated memory is still 113.2MB. Free memory was 86.7MB in the beginning and 85.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.43ms. Allocated memory is still 113.2MB. Free memory was 85.1MB in the beginning and 83.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 380.81ms. Allocated memory is still 113.2MB. Free memory was 83.9MB in the beginning and 73.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7676.57ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 73.2MB in the beginning and 100.9MB in the end (delta: -27.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.52ms. Allocated memory is still 136.3MB. Free memory was 100.9MB in the beginning and 97.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, N=3] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [a={-1:0}, i=0, N=3, sum={5:0}] [L31] COND TRUE i