./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/modpf.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_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/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_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/modpf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/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_32705626-cebd-4662-bbcd-d40fd1291e19/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 61f279515dc246fff43fc3ce83c4d2998ba719de7dc60a31302f8b9cd2dc8a22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:30:38,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:30:38,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:30:38,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:30:38,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:30:38,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:30:38,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:30:38,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:30:38,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:30:38,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:30:38,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:30:38,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:30:38,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:30:38,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:30:38,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:30:38,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:30:38,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:30:38,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:30:38,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:30:38,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:30:38,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:30:38,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:30:38,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:30:38,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:30:38,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:30:38,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:30:38,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:30:38,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:30:38,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:30:38,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:30:38,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:30:38,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:30:38,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:30:38,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:30:38,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:30:38,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:30:38,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:30:38,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:30:38,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:30:38,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:30:38,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:30:38,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:30:38,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:30:38,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:30:38,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:30:38,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:30:38,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:30:38,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:30:38,752 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:30:38,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:30:38,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:30:38,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:30:38,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:30:38,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:30:38,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:30:38,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:30:38,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:30:38,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:30:38,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:30:38,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:30:38,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:30:38,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:30:38,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:30:38,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:30:38,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:30:38,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:30:38,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:30:38,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:30:38,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:30:38,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:30:38,761 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:30:38,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:30:38,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:30:38,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:30:38,763 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_32705626-cebd-4662-bbcd-d40fd1291e19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61f279515dc246fff43fc3ce83c4d2998ba719de7dc60a31302f8b9cd2dc8a22 [2021-11-22 15:30:39,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:30:39,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:30:39,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:30:39,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:30:39,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:30:39,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-fpi/modpf.c [2021-11-22 15:30:39,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/data/2f6a3a237/ee7ebed03be44e4f987538df6fc6bc33/FLAGea46760bd [2021-11-22 15:30:39,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:30:39,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/sv-benchmarks/c/array-fpi/modpf.c [2021-11-22 15:30:39,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/data/2f6a3a237/ee7ebed03be44e4f987538df6fc6bc33/FLAGea46760bd [2021-11-22 15:30:40,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/data/2f6a3a237/ee7ebed03be44e4f987538df6fc6bc33 [2021-11-22 15:30:40,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:30:40,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:30:40,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:30:40,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:30:40,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:30:40,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e304814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40, skipping insertion in model container [2021-11-22 15:30:40,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:30:40,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:30:40,514 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_32705626-cebd-4662-bbcd-d40fd1291e19/sv-benchmarks/c/array-fpi/modpf.c[588,601] [2021-11-22 15:30:40,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:30:40,543 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:30:40,556 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_32705626-cebd-4662-bbcd-d40fd1291e19/sv-benchmarks/c/array-fpi/modpf.c[588,601] [2021-11-22 15:30:40,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:30:40,578 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:30:40,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40 WrapperNode [2021-11-22 15:30:40,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:30:40,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:30:40,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:30:40,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:30:40,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,631 INFO L137 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-11-22 15:30:40,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:30:40,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:30:40,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:30:40,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:30:40,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:30:40,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:30:40,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:30:40,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:30:40,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (1/1) ... [2021-11-22 15:30:40,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:30:40,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:30:40,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:30:40,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:30:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:30:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:30:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:30:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:30:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:30:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:30:40,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:30:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:30:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:30:40,845 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:30:40,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:30:41,037 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:30:41,044 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:30:41,044 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 15:30:41,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:30:41 BoogieIcfgContainer [2021-11-22 15:30:41,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:30:41,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:30:41,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:30:41,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:30:41,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:30:40" (1/3) ... [2021-11-22 15:30:41,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e53b76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:30:41, skipping insertion in model container [2021-11-22 15:30:41,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:30:40" (2/3) ... [2021-11-22 15:30:41,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e53b76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:30:41, skipping insertion in model container [2021-11-22 15:30:41,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:30:41" (3/3) ... [2021-11-22 15:30:41,057 INFO L111 eAbstractionObserver]: Analyzing ICFG modpf.c [2021-11-22 15:30:41,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:30:41,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:30:41,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:30:41,189 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 15:30:41,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:30:41,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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 15:30:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:30:41,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:41,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:41,275 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:41,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-11-22 15:30:41,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:41,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045154908] [2021-11-22 15:30:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:41,488 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 15:30:41,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045154908] [2021-11-22 15:30:41,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045154908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:41,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:41,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:30:41,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166329107] [2021-11-22 15:30:41,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:41,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:30:41,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:41,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:30:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:30:41,551 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 15:30:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:41,575 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-11-22 15:30:41,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:30:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-22 15:30:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:41,585 INFO L225 Difference]: With dead ends: 38 [2021-11-22 15:30:41,586 INFO L226 Difference]: Without dead ends: 17 [2021-11-22 15:30:41,588 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 15:30:41,593 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 15:30:41,594 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 15:30:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-22 15:30:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-22 15:30:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 15:30:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-22 15:30:41,629 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-11-22 15:30:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:41,629 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-22 15:30:41,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 15:30:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-22 15:30:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 15:30:41,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:41,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:41,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:30:41,631 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-11-22 15:30:41,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:41,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983244125] [2021-11-22 15:30:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:41,733 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 15:30:41,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:30:41,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983244125] [2021-11-22 15:30:41,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983244125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:30:41,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:30:41,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:30:41,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42919201] [2021-11-22 15:30:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:30:41,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:30:41,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:30:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:30:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:30:41,738 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 15:30:41,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:30:41,830 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-11-22 15:30:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:30:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-22 15:30:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:30:41,833 INFO L225 Difference]: With dead ends: 37 [2021-11-22 15:30:41,833 INFO L226 Difference]: Without dead ends: 27 [2021-11-22 15:30:41,834 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 15:30:41,836 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:30:41,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:30:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-22 15:30:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-11-22 15:30:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:30:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-22 15:30:41,845 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-11-22 15:30:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:30:41,845 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-22 15:30:41,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 15:30:41,846 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-22 15:30:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:30:41,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:30:41,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:30:41,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:30:41,848 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:30:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:30:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-11-22 15:30:41,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:30:41,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835656970] [2021-11-22 15:30:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:30:41,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:30:41,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384526051] [2021-11-22 15:30:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:41,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:41,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:30:41,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:30:41,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:30:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:30:41,983 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:30:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:30:42,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:30:42,030 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:30:42,031 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 15:30:42,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:30:42,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:30:42,265 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 15:30:42,269 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:30:42,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:30:42 BoogieIcfgContainer [2021-11-22 15:30:42,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:30:42,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:30:42,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:30:42,313 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:30:42,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:30:41" (3/4) ... [2021-11-22 15:30:42,315 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 15:30:42,367 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32705626-cebd-4662-bbcd-d40fd1291e19/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:30:42,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:30:42,368 INFO L158 Benchmark]: Toolchain (without parser) took 2079.58ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 50.7MB in the beginning and 70.1MB in the end (delta: -19.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2021-11-22 15:30:42,369 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:30:42,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.49ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 50.5MB in the beginning and 98.7MB in the end (delta: -48.2MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-11-22 15:30:42,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.24ms. Allocated memory is still 123.7MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:30:42,371 INFO L158 Benchmark]: Boogie Preprocessor took 45.54ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 96.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:30:42,372 INFO L158 Benchmark]: RCFGBuilder took 368.14ms. Allocated memory is still 123.7MB. Free memory was 96.0MB in the beginning and 85.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:30:42,372 INFO L158 Benchmark]: TraceAbstraction took 1262.65ms. Allocated memory is still 123.7MB. Free memory was 84.9MB in the beginning and 72.7MB in the end (delta: 12.2MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-11-22 15:30:42,373 INFO L158 Benchmark]: Witness Printer took 55.10ms. Allocated memory is still 123.7MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:30:42,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.49ms. Allocated memory was 90.2MB in the beginning and 123.7MB in the end (delta: 33.6MB). Free memory was 50.5MB in the beginning and 98.7MB in the end (delta: -48.2MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.24ms. Allocated memory is still 123.7MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.54ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 96.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 368.14ms. Allocated memory is still 123.7MB. Free memory was 96.0MB in the beginning and 85.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1262.65ms. Allocated memory is still 123.7MB. Free memory was 84.9MB in the beginning and 72.7MB in the end (delta: 12.2MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 55.10ms. Allocated memory is still 123.7MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [a={-1:0}, i=0, N=1, sum={4:0}] [L32] COND TRUE i