./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be --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 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:05:49,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:05:49,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:05:49,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:05:49,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:05:49,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:05:49,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:05:49,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:05:49,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:05:49,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:05:49,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:05:49,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:05:49,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:05:49,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:05:49,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:05:49,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:05:49,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:05:49,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:05:49,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:05:49,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:05:49,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:05:49,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:05:49,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:05:49,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:05:49,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:05:49,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:05:49,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:05:49,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:05:49,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:05:49,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:05:49,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:05:49,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:05:49,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:05:49,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:05:49,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:05:49,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:05:49,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:05:49,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:05:49,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:05:49,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:05:49,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:05:49,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:05:49,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:05:49,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:05:49,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:05:49,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:05:49,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:05:49,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:05:49,219 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:05:49,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:05:49,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:05:49,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:05:49,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:05:49,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:05:49,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:05:49,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:05:49,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:05:49,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:05:49,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:05:49,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:05:49,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:05:49,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:05:49,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:05:49,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:05:49,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:05:49,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:05:49,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:05:49,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:05:49,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:05:49,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:05:49,225 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:05:49,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:05:49,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:05:49,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:05:49,227 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_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 [2021-10-21 20:05:49,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:05:49,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:05:49,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:05:49,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:05:49,631 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:05:49,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive/Addition01-2.c [2021-10-21 20:05:49,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/data/29a1e8bf0/077fde9f20394b2babda24bcb8cd5bbb/FLAG9de460385 [2021-10-21 20:05:50,441 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:05:50,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/sv-benchmarks/c/recursive/Addition01-2.c [2021-10-21 20:05:50,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/data/29a1e8bf0/077fde9f20394b2babda24bcb8cd5bbb/FLAG9de460385 [2021-10-21 20:05:50,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/data/29a1e8bf0/077fde9f20394b2babda24bcb8cd5bbb [2021-10-21 20:05:50,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:05:50,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:05:50,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:05:50,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:05:50,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:05:50,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:05:50" (1/1) ... [2021-10-21 20:05:50,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70098f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:50, skipping insertion in model container [2021-10-21 20:05:50,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:05:50" (1/1) ... [2021-10-21 20:05:50,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:05:50,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:05:51,072 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_4a7b3e46-7674-4406-a0ed-64f19552e681/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-10-21 20:05:51,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:05:51,093 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:05:51,121 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_4a7b3e46-7674-4406-a0ed-64f19552e681/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-10-21 20:05:51,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:05:51,148 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:05:51,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51 WrapperNode [2021-10-21 20:05:51,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:05:51,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:05:51,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:05:51,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:05:51,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:05:51,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:05:51,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:05:51,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:05:51,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:05:51,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:05:51,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:05:51,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:05:51,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (1/1) ... [2021-10-21 20:05:51,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:05:51,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:05:51,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:05:51,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:05:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:05:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:05:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:05:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:05:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-10-21 20:05:51,356 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-10-21 20:05:51,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:05:51,674 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:05:51,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:05:51 BoogieIcfgContainer [2021-10-21 20:05:51,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:05:51,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:05:51,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:05:51,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:05:51,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:05:50" (1/3) ... [2021-10-21 20:05:51,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483efed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:05:51, skipping insertion in model container [2021-10-21 20:05:51,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:05:51" (2/3) ... [2021-10-21 20:05:51,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483efed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:05:51, skipping insertion in model container [2021-10-21 20:05:51,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:05:51" (3/3) ... [2021-10-21 20:05:51,707 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-10-21 20:05:51,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:05:51,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:05:51,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:05:51,860 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 [2021-10-21 20:05:51,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:05:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:05:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:05:51,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:05:51,893 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:51,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:05:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 663264039, now seen corresponding path program 1 times [2021-10-21 20:05:51,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:51,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432671966] [2021-10-21 20:05:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:51,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:05:52,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:52,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432671966] [2021-10-21 20:05:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432671966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:05:52,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:05:52,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 20:05:52,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752012605] [2021-10-21 20:05:52,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:05:52,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:05:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:05:52,479 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:05:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:52,690 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-10-21 20:05:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:05:52,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 20:05:52,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:05:52,713 INFO L225 Difference]: With dead ends: 34 [2021-10-21 20:05:52,713 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 20:05:52,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:05:52,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 20:05:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-21 20:05:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:05:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-10-21 20:05:52,786 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2021-10-21 20:05:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:05:52,788 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-10-21 20:05:52,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:05:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-10-21 20:05:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:05:52,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:05:52,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:52,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:05:52,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:05:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:52,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1508496640, now seen corresponding path program 1 times [2021-10-21 20:05:52,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:52,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381972521] [2021-10-21 20:05:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:52,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:05:52,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:52,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381972521] [2021-10-21 20:05:52,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381972521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:05:52,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:05:52,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:05:52,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872727187] [2021-10-21 20:05:52,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:05:52,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:05:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:05:52,890 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:05:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:52,915 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-10-21 20:05:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:05:52,916 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-21 20:05:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:05:52,917 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:05:52,918 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 20:05:52,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:05:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 20:05:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-10-21 20:05:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:05:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-21 20:05:52,929 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-10-21 20:05:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:05:52,929 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-21 20:05:52,930 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:05:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-21 20:05:52,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:05:52,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:05:52,932 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:52,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:05:52,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:05:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:52,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1330690599, now seen corresponding path program 1 times [2021-10-21 20:05:52,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:52,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276891499] [2021-10-21 20:05:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:52,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:05:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:05:53,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:53,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276891499] [2021-10-21 20:05:53,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276891499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:05:53,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072109086] [2021-10-21 20:05:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:53,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:05:53,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:05:53,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:05:53,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:05:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:53,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:05:53,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:05:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:05:53,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072109086] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:05:53,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:05:53,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-10-21 20:05:53,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78142946] [2021-10-21 20:05:53,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:05:53,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:05:53,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:05:53,993 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:05:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:54,354 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-10-21 20:05:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:05:54,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-10-21 20:05:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:05:54,366 INFO L225 Difference]: With dead ends: 35 [2021-10-21 20:05:54,366 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:05:54,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 387.9ms TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:05:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:05:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-10-21 20:05:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 20:05:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-21 20:05:54,396 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 19 [2021-10-21 20:05:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:05:54,398 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-21 20:05:54,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-21 20:05:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-21 20:05:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:05:54,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:05:54,402 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:54,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:05:54,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:05:54,604 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:05:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:54,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1159446067, now seen corresponding path program 1 times [2021-10-21 20:05:54,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:54,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322239911] [2021-10-21 20:05:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:54,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:05:54,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:54,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322239911] [2021-10-21 20:05:54,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322239911] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:05:54,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676094921] [2021-10-21 20:05:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:54,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:05:54,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:05:54,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:05:54,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:05:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:54,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:05:54,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:05:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:05:54,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676094921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:05:54,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:05:54,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-21 20:05:54,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171919926] [2021-10-21 20:05:54,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:05:54,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:05:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:05:54,981 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:05:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:55,051 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-10-21 20:05:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:05:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-10-21 20:05:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:05:55,056 INFO L225 Difference]: With dead ends: 28 [2021-10-21 20:05:55,056 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 20:05:55,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:05:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 20:05:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-21 20:05:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-21 20:05:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-10-21 20:05:55,074 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 20 [2021-10-21 20:05:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:05:55,075 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-10-21 20:05:55,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:05:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-10-21 20:05:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 20:05:55,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:05:55,078 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:05:55,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:05:55,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:05:55,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:05:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:05:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1187670683, now seen corresponding path program 1 times [2021-10-21 20:05:55,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:05:55,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250958637] [2021-10-21 20:05:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:55,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:05:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:05:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:55,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:05:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:05:55,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:05:55,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250958637] [2021-10-21 20:05:55,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250958637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:05:55,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989979862] [2021-10-21 20:05:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:05:55,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:05:55,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:05:55,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:05:55,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:05:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:05:55,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:05:55,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:05:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:05:55,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989979862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:05:55,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:05:55,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-10-21 20:05:55,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113141942] [2021-10-21 20:05:55,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:05:55,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:05:55,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:05:55,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:05:55,711 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 20:05:55,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:05:55,761 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2021-10-21 20:05:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:05:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2021-10-21 20:05:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:05:55,764 INFO L225 Difference]: With dead ends: 29 [2021-10-21 20:05:55,764 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:05:55,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:05:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:05:55,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:05:55,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:05:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:05:55,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-21 20:05:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:05:55,767 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:05:55,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-21 20:05:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:05:55,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:05:55,771 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:05:55,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:05:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:05:55,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:05:56,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:05:56,059 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:05:56,059 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:05:56,059 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-10-21 20:05:56,060 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:05:56,060 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:05:56,060 INFO L860 garLoopResultBuilder]: At program point L28(lines 28 47) the Hoare annotation is: true [2021-10-21 20:05:56,061 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2021-10-21 20:05:56,061 INFO L857 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2021-10-21 20:05:56,061 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-10-21 20:05:56,061 INFO L853 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~n~0) [2021-10-21 20:05:56,062 INFO L857 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-10-21 20:05:56,062 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-10-21 20:05:56,062 INFO L853 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (<= (+ addition_~n 1) 0) (= |addition_#in~n| addition_~n)) [2021-10-21 20:05:56,063 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-10-21 20:05:56,063 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-21 20:05:56,063 INFO L857 garLoopResultBuilder]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2021-10-21 20:05:56,064 INFO L853 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (<= 1 addition_~n) (= |addition_#in~n| addition_~n)) [2021-10-21 20:05:56,064 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-10-21 20:05:56,064 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-21 20:05:56,064 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-10-21 20:05:56,065 INFO L860 garLoopResultBuilder]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-10-21 20:05:56,065 INFO L857 garLoopResultBuilder]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2021-10-21 20:05:56,071 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:05:56,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:05:56 BoogieIcfgContainer [2021-10-21 20:05:56,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:05:56,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:05:56,080 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:05:56,080 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:05:56,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:05:51" (3/4) ... [2021-10-21 20:05:56,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:05:56,093 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2021-10-21 20:05:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-21 20:05:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 20:05:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:05:56,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:05:56,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:05:56,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:05:56,144 INFO L168 Benchmark]: Toolchain (without parser) took 5342.09 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 76.8 MB in the beginning and 53.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:05:56,144 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:05:56,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.15 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 81.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:05:56,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 104.9 MB. Free memory was 81.2 MB in the beginning and 79.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:05:56,146 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.9 MB in the end (delta: 904.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:05:56,147 INFO L168 Benchmark]: RCFGBuilder took 462.46 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 69.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:05:56,148 INFO L168 Benchmark]: TraceAbstraction took 4380.37 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 68.7 MB in the beginning and 56.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:05:56,148 INFO L168 Benchmark]: Witness Printer took 62.15 ms. Allocated memory is still 134.2 MB. Free memory was 56.1 MB in the beginning and 53.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:05:56,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory is still 64.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.15 ms. Allocated memory is still 104.9 MB. Free memory was 76.5 MB in the beginning and 81.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 104.9 MB. Free memory was 81.2 MB in the beginning and 79.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.23 ms. Allocated memory is still 104.9 MB. Free memory was 79.8 MB in the beginning and 78.9 MB in the end (delta: 904.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 462.46 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 69.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4380.37 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 68.7 MB in the beginning and 56.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. * Witness Printer took 62.15 ms. Allocated memory is still 134.2 MB. Free memory was 56.1 MB in the beginning and 53.0 MB in the end (delta: 3.1 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 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4228.3ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 28.4ms, AutomataDifference: 802.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 62.2ms, InitialAbstractionConstructionTime: 19.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 84 SDtfs, 69 SDslu, 168 SDs, 0 SdLazy, 291 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 327.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 546.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 27 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 29.8ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 24.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 61.1ms SsaConstructionTime, 230.9ms SatisfiabilityAnalysisTime, 1810.8ms InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 9 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 33/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:05:56,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a7b3e46-7674-4406-a0ed-64f19552e681/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...