./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4751d3eb3f8125549e47ad071da84be7a54e1805eb31936796833555d65c49e8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:11:08,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:11:08,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:11:08,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:11:08,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:11:08,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:11:08,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:11:08,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:11:08,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:11:08,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:11:08,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:11:08,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:11:08,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:11:08,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:11:08,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:11:08,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:11:08,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:11:08,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:11:08,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:11:08,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:11:08,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:11:08,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:11:08,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:11:08,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:11:08,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:11:08,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:11:08,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:11:08,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:11:08,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:11:08,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:11:08,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:11:08,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:11:08,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:11:08,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:11:08,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:11:08,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:11:08,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:11:08,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:11:08,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:11:08,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:11:08,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:11:08,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:11:08,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:11:08,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:11:08,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:11:08,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:11:08,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:11:08,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:11:08,267 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:11:08,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:11:08,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:11:08,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:11:08,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:11:08,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:11:08,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:11:08,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:11:08,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:11:08,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:11:08,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:11:08,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:11:08,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:11:08,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:11:08,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:11:08,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:11:08,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:08,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:11:08,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:11:08,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:11:08,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:11:08,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:11:08,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:11:08,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:11:08,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:11:08,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:11:08,279 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_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4751d3eb3f8125549e47ad071da84be7a54e1805eb31936796833555d65c49e8 [2021-11-22 15:11:08,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:11:08,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:11:08,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:11:08,659 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:11:08,660 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:11:08,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c [2021-11-22 15:11:08,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/data/317f715b3/877c5673b3f14aa0a19d24b022acd6aa/FLAG4ad783d7a [2021-11-22 15:11:09,370 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:11:09,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c [2021-11-22 15:11:09,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/data/317f715b3/877c5673b3f14aa0a19d24b022acd6aa/FLAG4ad783d7a [2021-11-22 15:11:09,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/data/317f715b3/877c5673b3f14aa0a19d24b022acd6aa [2021-11-22 15:11:09,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:11:09,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:11:09,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:09,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:11:09,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:11:09,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:09" (1/1) ... [2021-11-22 15:11:09,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8f1191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:09, skipping insertion in model container [2021-11-22 15:11:09,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:11:09" (1/1) ... [2021-11-22 15:11:09,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:11:09,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:11:09,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c[555,568] [2021-11-22 15:11:10,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:10,013 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:11:10,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound5.c[555,568] [2021-11-22 15:11:10,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:11:10,049 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:11:10,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10 WrapperNode [2021-11-22 15:11:10,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:11:10,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:10,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:11:10,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:11:10,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,091 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2021-11-22 15:11:10,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:11:10,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:11:10,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:11:10,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:11:10,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:11:10,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:11:10,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:11:10,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:11:10,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (1/1) ... [2021-11-22 15:11:10,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:11:10,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:10,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:11:10,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:11:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:11:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:11:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:11:10,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:11:10,293 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:11:10,295 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:11:10,418 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:11:10,426 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:11:10,426 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:11:10,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:10 BoogieIcfgContainer [2021-11-22 15:11:10,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:11:10,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:11:10,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:11:10,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:11:10,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:11:09" (1/3) ... [2021-11-22 15:11:10,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bad80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:10, skipping insertion in model container [2021-11-22 15:11:10,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:11:10" (2/3) ... [2021-11-22 15:11:10,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49bad80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:11:10, skipping insertion in model container [2021-11-22 15:11:10,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:10" (3/3) ... [2021-11-22 15:11:10,441 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound5.c [2021-11-22 15:11:10,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:11:10,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 15:11:10,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:11:10,535 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:11:10,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 15:11:10,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 15:11:10,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:10,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 15:11:10,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:10,570 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-22 15:11:10,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:10,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789071504] [2021-11-22 15:11:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:10,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:10,687 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:10,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386335913] [2021-11-22 15:11:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:10,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:10,704 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:10,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:11:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:10,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:11:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:11,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:11,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789071504] [2021-11-22 15:11:11,089 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:11,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386335913] [2021-11-22 15:11:11,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386335913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:11,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:11,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:11:11,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562413630] [2021-11-22 15:11:11,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:11,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:11,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:11,144 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:11,238 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2021-11-22 15:11:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:11:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-22 15:11:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:11,254 INFO L225 Difference]: With dead ends: 42 [2021-11-22 15:11:11,254 INFO L226 Difference]: Without dead ends: 23 [2021-11-22 15:11:11,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:11:11,264 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:11,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-22 15:11:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2021-11-22 15:11:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-22 15:11:11,308 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2021-11-22 15:11:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:11,309 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-22 15:11:11,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-22 15:11:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:11:11,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:11,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:11,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:11,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:11,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:11,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1806863068, now seen corresponding path program 1 times [2021-11-22 15:11:11,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:11,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384172098] [2021-11-22 15:11:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:11,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:11,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:11,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229287375] [2021-11-22 15:11:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:11,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:11,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:11,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:11,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:11:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:11:11,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:11:11,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:11:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:11:11,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:11:11,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:11:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384172098] [2021-11-22 15:11:11,700 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:11:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229287375] [2021-11-22 15:11:11,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229287375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:11:11,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:11:11,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:11:11,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472435517] [2021-11-22 15:11:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:11:11,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:11:11,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:11:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:11:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:11,705 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:11:11,721 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-22 15:11:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:11:11,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:11:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:11:11,722 INFO L225 Difference]: With dead ends: 20 [2021-11-22 15:11:11,723 INFO L226 Difference]: Without dead ends: 16 [2021-11-22 15:11:11,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:11:11,726 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:11:11,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:11:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-22 15:11:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-22 15:11:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-22 15:11:11,732 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2021-11-22 15:11:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:11:11,733 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-22 15:11:11,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:11:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-22 15:11:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 15:11:11,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:11:11,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:11:11,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:11:11,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:11,961 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:11:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:11:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 852617491, now seen corresponding path program 1 times [2021-11-22 15:11:11,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:11:11,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339069932] [2021-11-22 15:11:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:11,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:11:11,977 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:11:11,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125437308] [2021-11-22 15:11:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:11:11,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:11,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:11:11,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:11:11,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:11:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:11:12,044 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:11:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:11:12,073 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:11:12,074 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:11:12,075 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-22 15:11:12,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-22 15:11:12,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 15:11:12,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:11:12,299 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 15:11:12,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:11:12,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:11:12 BoogieIcfgContainer [2021-11-22 15:11:12,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:11:12,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:11:12,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:11:12,331 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:11:12,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:11:10" (3/4) ... [2021-11-22 15:11:12,334 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 15:11:12,390 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:11:12,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:11:12,391 INFO L158 Benchmark]: Toolchain (without parser) took 2650.11ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 62.6MB in the beginning and 71.4MB in the end (delta: -8.7MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-22 15:11:12,392 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 96.5MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:11:12,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.18ms. Allocated memory is still 96.5MB. Free memory was 62.5MB in the beginning and 71.5MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:11:12,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.67ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 70.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:11:12,393 INFO L158 Benchmark]: Boogie Preprocessor took 25.53ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 69.1MB in the end (delta: 882.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:11:12,394 INFO L158 Benchmark]: RCFGBuilder took 310.11ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 60.0MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:11:12,395 INFO L158 Benchmark]: TraceAbstraction took 1898.86ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 59.7MB in the beginning and 73.3MB in the end (delta: -13.6MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-11-22 15:11:12,395 INFO L158 Benchmark]: Witness Printer took 59.64ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 71.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:11:12,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 96.5MB. Free memory was 52.2MB in the beginning and 52.1MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.18ms. Allocated memory is still 96.5MB. Free memory was 62.5MB in the beginning and 71.5MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.67ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 70.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.53ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 69.1MB in the end (delta: 882.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.11ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 60.0MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1898.86ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 59.7MB in the beginning and 73.3MB in the end (delta: -13.6MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 59.64ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 71.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [c=1, counter=0, x=1, y=0, z=-4294967296] [L33] EXPR counter++ VAL [c=1, counter=1, counter++=0, x=1, y=0, z=-4294967296] [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L36] COND TRUE !(c < k) VAL [c=1, counter=1, k=0, x=1, y=0, z=-4294967296] [L45] x = x * (z - 1) [L47] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 29 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 4 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-22 15:11:12,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b904f2-4746-4ab8-97f9-3ea466509078/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE