./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2of.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2of.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3 --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 ab5f5575b4f404d180fabd8e1f95043fb9254d7e ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:43:34,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:43:34,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:43:34,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:43:34,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:43:34,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:43:34,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:43:34,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:43:34,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:43:34,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:43:34,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:43:34,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:43:34,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:43:34,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:43:34,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:43:34,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:43:34,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:43:34,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:43:34,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:43:34,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:43:34,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:43:34,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:43:34,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:43:34,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:43:34,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:43:34,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:43:34,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:43:34,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:43:34,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:43:34,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:43:34,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:43:34,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:43:34,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:43:34,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:43:34,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:43:34,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:43:34,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:43:34,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:43:34,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:43:34,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:43:34,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:43:34,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:43:34,253 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:43:34,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:43:34,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:43:34,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:43:34,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:43:34,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:43:34,257 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:43:34,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:43:34,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:43:34,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:43:34,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:43:34,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:43:34,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:43:34,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:43:34,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:43:34,260 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:43:34,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:43:34,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:43:34,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:43:34,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:43:34,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:43:34,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:43:34,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:43:34,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:43:34,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:43:34,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:43:34,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:43:34,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:43:34,263 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:43:34,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:43:34,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:43:34,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:43:34,266 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_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab5f5575b4f404d180fabd8e1f95043fb9254d7e [2021-10-15 19:43:34,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:43:34,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:43:34,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:43:34,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:43:34,623 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:43:34,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-fpi/res2of.c [2021-10-15 19:43:34,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/data/77e41bcec/74519e4e51a74556afecfe66722beee4/FLAG398b78793 [2021-10-15 19:43:35,152 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:43:35,153 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/sv-benchmarks/c/array-fpi/res2of.c [2021-10-15 19:43:35,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/data/77e41bcec/74519e4e51a74556afecfe66722beee4/FLAG398b78793 [2021-10-15 19:43:35,516 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/data/77e41bcec/74519e4e51a74556afecfe66722beee4 [2021-10-15 19:43:35,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:43:35,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:43:35,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:43:35,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:43:35,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:43:35,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527c7fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35, skipping insertion in model container [2021-10-15 19:43:35,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:43:35,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:43:35,731 WARN L228 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_62861050-20c8-47b6-886d-ba66c2418838/sv-benchmarks/c/array-fpi/res2of.c[589,602] [2021-10-15 19:43:35,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:43:35,765 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:43:35,775 WARN L228 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_62861050-20c8-47b6-886d-ba66c2418838/sv-benchmarks/c/array-fpi/res2of.c[589,602] [2021-10-15 19:43:35,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:43:35,802 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:43:35,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35 WrapperNode [2021-10-15 19:43:35,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:43:35,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:43:35,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:43:35,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:43:35,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:43:35,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:43:35,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:43:35,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:43:35,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:43:35,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:43:35,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:43:35,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:43:35,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (1/1) ... [2021-10-15 19:43:35,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:43:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:43:35,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:43:35,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:43:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:43:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-15 19:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:43:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:43:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:43:36,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:43:36,387 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-15 19:43:36,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:43:36 BoogieIcfgContainer [2021-10-15 19:43:36,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:43:36,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:43:36,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:43:36,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:43:36,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:43:35" (1/3) ... [2021-10-15 19:43:36,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2725054a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:43:36, skipping insertion in model container [2021-10-15 19:43:36,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:43:35" (2/3) ... [2021-10-15 19:43:36,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2725054a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:43:36, skipping insertion in model container [2021-10-15 19:43:36,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:43:36" (3/3) ... [2021-10-15 19:43:36,400 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2021-10-15 19:43:36,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:43:36,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:43:36,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:43:36,471 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=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 [2021-10-15 19:43:36,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:43:36,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 44 transitions, 88 flow [2021-10-15 19:43:36,506 INFO L129 PetriNetUnfolder]: 15/44 cut-off events. [2021-10-15 19:43:36,507 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:43:36,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 44 events. 15/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:43:36,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 44 transitions, 88 flow [2021-10-15 19:43:36,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 38 transitions, 76 flow [2021-10-15 19:43:36,522 INFO L129 PetriNetUnfolder]: 13/37 cut-off events. [2021-10-15 19:43:36,522 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:43:36,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:43:36,523 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:36,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:43:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:36,530 INFO L82 PathProgramCache]: Analyzing trace with hash -662887384, now seen corresponding path program 1 times [2021-10-15 19:43:36,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:43:36,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701922754] [2021-10-15 19:43:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:36,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:43:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:43:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:36,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:43:36,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701922754] [2021-10-15 19:43:36,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701922754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:43:36,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:43:36,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:43:36,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416711290] [2021-10-15 19:43:36,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:43:36,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:43:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:43:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:43:36,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 44 [2021-10-15 19:43:36,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 38 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2021-10-15 19:43:36,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:43:36,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 44 [2021-10-15 19:43:36,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:43:36,832 INFO L129 PetriNetUnfolder]: 6/31 cut-off events. [2021-10-15 19:43:36,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:43:36,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 31 events. 6/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 7/32 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-10-15 19:43:36,838 INFO L132 encePairwiseOnDemand]: 37/44 looper letters, 0 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2021-10-15 19:43:36,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 62 flow [2021-10-15 19:43:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:43:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:43:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2021-10-15 19:43:36,854 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8977272727272727 [2021-10-15 19:43:36,855 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 79 transitions. [2021-10-15 19:43:36,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 79 transitions. [2021-10-15 19:43:36,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:43:36,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 79 transitions. [2021-10-15 19:43:36,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 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) [2021-10-15 19:43:36,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-10-15 19:43:36,865 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2021-10-15 19:43:36,868 INFO L186 Difference]: Start difference. First operand has 26 places, 38 transitions, 76 flow. Second operand 2 states and 79 transitions. [2021-10-15 19:43:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 62 flow [2021-10-15 19:43:36,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:43:36,879 INFO L242 Difference]: Finished difference. Result has 27 places, 31 transitions, 62 flow [2021-10-15 19:43:36,882 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=31} [2021-10-15 19:43:36,883 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-10-15 19:43:36,883 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 31 transitions, 62 flow [2021-10-15 19:43:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 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) [2021-10-15 19:43:36,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:43:36,885 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:36,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:43:36,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:43:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2021-10-15 19:43:36,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:43:36,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402788100] [2021-10-15 19:43:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:36,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:43:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:43:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:43:37,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:43:37,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402788100] [2021-10-15 19:43:37,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402788100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:43:37,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:43:37,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:43:37,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972796184] [2021-10-15 19:43:37,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:43:37,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:43:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:43:37,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:43:37,051 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 44 [2021-10-15 19:43:37,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 31 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:43:37,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:43:37,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 44 [2021-10-15 19:43:37,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:43:37,212 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-10-15 19:43:37,213 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:43:37,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 83. Up to 26 conditions per place. [2021-10-15 19:43:37,214 INFO L132 encePairwiseOnDemand]: 25/44 looper letters, 27 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2021-10-15 19:43:37,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 43 transitions, 166 flow [2021-10-15 19:43:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:43:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:43:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2021-10-15 19:43:37,217 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2021-10-15 19:43:37,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2021-10-15 19:43:37,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2021-10-15 19:43:37,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:43:37,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2021-10-15 19:43:37,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-10-15 19:43:37,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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) [2021-10-15 19:43:37,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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) [2021-10-15 19:43:37,222 INFO L186 Difference]: Start difference. First operand has 27 places, 31 transitions, 62 flow. Second operand 4 states and 74 transitions. [2021-10-15 19:43:37,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 43 transitions, 166 flow [2021-10-15 19:43:37,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:43:37,226 INFO L242 Difference]: Finished difference. Result has 31 places, 37 transitions, 136 flow [2021-10-15 19:43:37,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=31, PETRI_TRANSITIONS=37} [2021-10-15 19:43:37,227 INFO L334 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-10-15 19:43:37,227 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 37 transitions, 136 flow [2021-10-15 19:43:37,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:43:37,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:43:37,228 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:43:37,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:43:37,228 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:43:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:43:37,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2021-10-15 19:43:37,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:43:37,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454794945] [2021-10-15 19:43:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:43:37,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:43:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:43:37,332 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:43:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:43:37,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:43:37,508 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:43:37,510 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:43:37,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:43:37,516 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:43:37,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:43:37 BoogieIcfgContainer [2021-10-15 19:43:37,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:43:37,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:43:37,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:43:37,570 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:43:37,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:43:36" (3/4) ... [2021-10-15 19:43:37,573 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:43:37,632 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62861050-20c8-47b6-886d-ba66c2418838/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:43:37,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:43:37,634 INFO L168 Benchmark]: Toolchain (without parser) took 2113.28 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.4 MB in the beginning and 64.1 MB in the end (delta: -10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,636 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:43:37,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.46 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.2 MB in the beginning and 84.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.61 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,638 INFO L168 Benchmark]: Boogie Preprocessor took 29.56 ms. Allocated memory is still 111.1 MB. Free memory was 83.2 MB in the beginning and 81.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,639 INFO L168 Benchmark]: RCFGBuilder took 514.19 ms. Allocated memory is still 111.1 MB. Free memory was 81.5 MB in the beginning and 69.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,640 INFO L168 Benchmark]: TraceAbstraction took 1173.92 ms. Allocated memory is still 111.1 MB. Free memory was 69.0 MB in the beginning and 67.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,640 INFO L168 Benchmark]: Witness Printer took 66.60 ms. Allocated memory is still 111.1 MB. Free memory was 67.7 MB in the beginning and 64.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:43:37,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.46 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.2 MB in the beginning and 84.8 MB in the end (delta: -31.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.61 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 83.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.56 ms. Allocated memory is still 111.1 MB. Free memory was 83.2 MB in the beginning and 81.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 514.19 ms. Allocated memory is still 111.1 MB. Free memory was 81.5 MB in the beginning and 69.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1173.92 ms. Allocated memory is still 111.1 MB. Free memory was 69.0 MB in the beginning and 67.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.60 ms. Allocated memory is still 111.1 MB. Free memory was 67.7 MB in the beginning and 64.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 0 [L34] i=0 VAL [N=1] [L34] COND TRUE i