./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a ................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:33:24,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:33:24,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:33:24,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:33:24,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:33:24,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:33:24,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:33:24,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:33:24,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:33:24,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:33:24,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:33:24,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:33:24,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:33:24,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:33:24,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:33:24,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:33:24,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:33:24,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:33:24,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:33:24,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:33:24,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:33:24,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:33:24,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:33:24,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:33:24,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:33:24,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:33:24,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:33:24,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:33:24,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:33:24,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:33:24,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:33:24,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:33:24,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:33:24,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:33:24,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:33:24,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:33:24,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:33:24,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:33:24,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:33:24,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:33:24,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:33:24,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:33:24,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:33:24,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:33:24,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:33:24,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:33:24,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:33:24,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:33:24,828 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:33:24,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:33:24,828 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:33:24,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:33:24,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:33:24,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:33:24,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:33:24,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:33:24,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:33:24,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:33:24,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:33:24,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:33:24,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:33:24,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:33:24,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:33:24,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:33:24,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:33:24,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:33:24,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:33:24,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:33:24,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:33:24,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:33:24,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:33:24,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:33:24,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:33:24,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:33:24,838 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_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2021-10-15 19:33:25,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:33:25,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:33:25,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:33:25,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:33:25,211 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:33:25,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-15 19:33:25,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/data/2e5607f0b/814fbb23c3b24d8cbff4c5276259e161/FLAGf71235d93 [2021-10-15 19:33:25,842 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:33:25,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-15 19:33:25,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/data/2e5607f0b/814fbb23c3b24d8cbff4c5276259e161/FLAGf71235d93 [2021-10-15 19:33:26,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/data/2e5607f0b/814fbb23c3b24d8cbff4c5276259e161 [2021-10-15 19:33:26,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:33:26,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:33:26,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:33:26,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:33:26,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:33:26,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7a7c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26, skipping insertion in model container [2021-10-15 19:33:26,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:33:26,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:33:26,484 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_44142426-f7a1-49ea-906a-a2aa9dfb997d/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-15 19:33:26,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:33:26,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:33:26,551 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_44142426-f7a1-49ea-906a-a2aa9dfb997d/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-15 19:33:26,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:33:26,578 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:33:26,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26 WrapperNode [2021-10-15 19:33:26,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:33:26,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:33:26,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:33:26,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:33:26,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:33:26,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:33:26,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:33:26,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:33:26,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:33:26,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:33:26,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:33:26,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:33:26,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (1/1) ... [2021-10-15 19:33:26,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:33:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:33:26,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:33:26,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:33:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:33:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:33:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:33:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:33:27,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:33:27,015 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 19:33:27,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:33:27 BoogieIcfgContainer [2021-10-15 19:33:27,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:33:27,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:33:27,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:33:27,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:33:27,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:33:26" (1/3) ... [2021-10-15 19:33:27,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41608603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:33:27, skipping insertion in model container [2021-10-15 19:33:27,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:33:26" (2/3) ... [2021-10-15 19:33:27,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41608603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:33:27, skipping insertion in model container [2021-10-15 19:33:27,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:33:27" (3/3) ... [2021-10-15 19:33:27,030 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-10-15 19:33:27,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:33:27,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:33:27,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:33:27,106 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:33:27,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:33:27,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 15 transitions, 30 flow [2021-10-15 19:33:27,171 INFO L129 PetriNetUnfolder]: 4/15 cut-off events. [2021-10-15 19:33:27,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:33:27,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 15 events. 4/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:33:27,174 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 15 transitions, 30 flow [2021-10-15 19:33:27,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 8 places, 9 transitions, 18 flow [2021-10-15 19:33:27,192 INFO L129 PetriNetUnfolder]: 2/8 cut-off events. [2021-10-15 19:33:27,193 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:33:27,193 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:33:27,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:33:27,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:33:27,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:33:27,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-15 19:33:27,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:33:27,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984500823] [2021-10-15 19:33:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:33:27,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:33:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:33:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:27,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:33:27,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984500823] [2021-10-15 19:33:27,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984500823] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:33:27,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:33:27,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:33:27,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690934648] [2021-10-15 19:33:27,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:33:27,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:33:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:33:27,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:33:27,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 15 [2021-10-15 19:33:27,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 8 places, 9 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:27,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:33:27,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 15 [2021-10-15 19:33:27,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:33:27,605 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 19:33:27,605 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:33:27,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 9 events. 1/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:33:27,607 INFO L132 encePairwiseOnDemand]: 11/15 looper letters, 3 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2021-10-15 19:33:27,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 9 transitions, 28 flow [2021-10-15 19:33:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:33:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:33:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2021-10-15 19:33:27,619 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2021-10-15 19:33:27,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 32 transitions. [2021-10-15 19:33:27,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 32 transitions. [2021-10-15 19:33:27,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:33:27,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 32 transitions. [2021-10-15 19:33:27,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:27,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:27,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:27,634 INFO L186 Difference]: Start difference. First operand has 8 places, 9 transitions, 18 flow. Second operand 3 states and 32 transitions. [2021-10-15 19:33:27,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 9 transitions, 28 flow [2021-10-15 19:33:27,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 9 transitions, 28 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:33:27,653 INFO L242 Difference]: Finished difference. Result has 11 places, 9 transitions, 28 flow [2021-10-15 19:33:27,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=28, PETRI_PLACES=11, PETRI_TRANSITIONS=9} [2021-10-15 19:33:27,657 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 3 predicate places. [2021-10-15 19:33:27,658 INFO L470 AbstractCegarLoop]: Abstraction has has 11 places, 9 transitions, 28 flow [2021-10-15 19:33:27,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:27,659 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:33:27,660 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:33:27,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:33:27,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:33:27,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:33:27,665 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-10-15 19:33:27,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:33:27,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633744681] [2021-10-15 19:33:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:33:27,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:33:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:33:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:27,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:33:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633744681] [2021-10-15 19:33:27,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633744681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:33:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227837408] [2021-10-15 19:33:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:33:27,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:33:27,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:33:27,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:33:27,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:33:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:33:27,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:33:27,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:33:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:28,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227837408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:33:28,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:33:28,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-15 19:33:28,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366237151] [2021-10-15 19:33:28,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:33:28,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:33:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:33:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:33:28,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 15 [2021-10-15 19:33:28,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 9 transitions, 28 flow. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:28,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:33:28,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 15 [2021-10-15 19:33:28,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:33:28,318 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-10-15 19:33:28,322 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:33:28,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 12 events. 1/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 19. Up to 7 conditions per place. [2021-10-15 19:33:28,325 INFO L132 encePairwiseOnDemand]: 10/15 looper letters, 5 selfloop transitions, 3 changer transitions 2/12 dead transitions. [2021-10-15 19:33:28,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 58 flow [2021-10-15 19:33:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:33:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:33:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 41 transitions. [2021-10-15 19:33:28,330 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2021-10-15 19:33:28,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 41 transitions. [2021-10-15 19:33:28,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 41 transitions. [2021-10-15 19:33:28,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:33:28,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 41 transitions. [2021-10-15 19:33:28,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:28,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:28,343 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:28,343 INFO L186 Difference]: Start difference. First operand has 11 places, 9 transitions, 28 flow. Second operand 6 states and 41 transitions. [2021-10-15 19:33:28,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 58 flow [2021-10-15 19:33:28,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 54 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:33:28,348 INFO L242 Difference]: Finished difference. Result has 18 places, 10 transitions, 44 flow [2021-10-15 19:33:28,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=44, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2021-10-15 19:33:28,351 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 10 predicate places. [2021-10-15 19:33:28,351 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 44 flow [2021-10-15 19:33:28,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:28,352 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:33:28,352 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:33:28,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:33:28,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-15 19:33:28,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:33:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:33:28,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 2 times [2021-10-15 19:33:28,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:33:28,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896950410] [2021-10-15 19:33:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:33:28,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:33:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:33:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:28,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:33:28,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896950410] [2021-10-15 19:33:28,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896950410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:33:28,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512065155] [2021-10-15 19:33:28,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:33:28,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:33:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:33:28,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:33:28,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:33:28,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:33:28,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:33:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:33:28,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:33:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:33:29,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512065155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:33:29,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:33:29,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-15 19:33:29,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758964685] [2021-10-15 19:33:29,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:33:29,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:33:29,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:33:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:33:29,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 15 [2021-10-15 19:33:29,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 10 transitions, 44 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:29,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:33:29,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 15 [2021-10-15 19:33:29,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:33:29,341 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-10-15 19:33:29,342 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:33:29,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 11 events. 1/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 2/11 useless extension candidates. Maximal degree in co-relation 37. Up to 7 conditions per place. [2021-10-15 19:33:29,342 INFO L132 encePairwiseOnDemand]: 10/15 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-10-15 19:33:29,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 74 flow [2021-10-15 19:33:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:33:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:33:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 62 transitions. [2021-10-15 19:33:29,344 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2021-10-15 19:33:29,344 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 62 transitions. [2021-10-15 19:33:29,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 62 transitions. [2021-10-15 19:33:29,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:33:29,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 62 transitions. [2021-10-15 19:33:29,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:29,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:29,348 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 15.0) internal successors, (165), 11 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:29,348 INFO L186 Difference]: Start difference. First operand has 18 places, 10 transitions, 44 flow. Second operand 10 states and 62 transitions. [2021-10-15 19:33:29,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 74 flow [2021-10-15 19:33:29,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 62 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-10-15 19:33:29,350 INFO L242 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-10-15 19:33:29,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-10-15 19:33:29,350 INFO L334 CegarLoopForPetriNet]: 8 programPoint places, 12 predicate places. [2021-10-15 19:33:29,350 INFO L470 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2021-10-15 19:33:29,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:33:29,361 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:29,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:33:29,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:33:29,595 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:33:29,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:33:29 BoogieIcfgContainer [2021-10-15 19:33:29,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:33:29,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:33:29,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:33:29,601 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:33:29,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:33:27" (3/4) ... [2021-10-15 19:33:29,605 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:33:29,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-15 19:33:29,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:33:29,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:33:29,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:33:29,662 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:33:29,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:33:29,664 INFO L168 Benchmark]: Toolchain (without parser) took 3457.10 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 75.0 MB in the end (delta: -24.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:29,664 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:29,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.97 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 65.6 MB in the end (delta: -15.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:29,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.84 ms. Allocated memory is still 90.2 MB. Free memory was 65.4 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:29,666 INFO L168 Benchmark]: Boogie Preprocessor took 46.95 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 63.0 MB in the end (delta: 994.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:29,667 INFO L168 Benchmark]: RCFGBuilder took 348.41 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 54.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:29,667 INFO L168 Benchmark]: TraceAbstraction took 2580.54 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.6 MB in the beginning and 78.1 MB in the end (delta: -24.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:29,668 INFO L168 Benchmark]: Witness Printer took 61.59 ms. Allocated memory is still 109.1 MB. Free memory was 78.1 MB in the beginning and 75.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:29,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.97 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 65.6 MB in the end (delta: -15.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.84 ms. Allocated memory is still 90.2 MB. Free memory was 65.4 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.95 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 63.0 MB in the end (delta: 994.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 348.41 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 54.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2580.54 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 53.6 MB in the beginning and 78.1 MB in the end (delta: -24.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 61.59 ms. Allocated memory is still 109.1 MB. Free memory was 78.1 MB in the beginning and 75.0 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: 16]: 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 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2502.6ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 481.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 15 SDslu, 9 SDs, 0 SdLazy, 63 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 442.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.8ms SsaConstructionTime, 169.7ms SatisfiabilityAnalysisTime, 933.5ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 8 NumberOfNonLiveVariables, 118 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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 RESULT: Ultimate proved your program to be correct! [2021-10-15 19:33:29,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44142426-f7a1-49ea-906a-a2aa9dfb997d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...