./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem07_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem07_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df7ae3db93e92270618cc08b15772305b39e7a8184e8ea2221160c76e4a6368e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:51:23,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:51:23,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:51:23,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:51:23,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:51:23,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:51:23,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:51:23,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:51:23,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:51:23,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:51:23,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:51:23,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:51:23,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:51:23,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:51:23,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:51:23,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:51:23,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:51:23,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:51:23,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:51:23,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:51:23,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:51:23,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:51:23,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:51:23,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:51:23,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:51:23,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:51:23,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:51:23,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:51:23,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:51:23,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:51:23,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:51:23,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:51:23,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:51:23,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:51:23,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:51:23,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:51:23,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:51:23,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:51:23,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:51:23,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:51:23,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:51:23,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:51:23,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:51:23,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:51:23,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:51:23,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:51:23,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:51:23,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:51:23,217 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:51:23,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:51:23,217 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:51:23,218 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:51:23,219 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:51:23,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:51:23,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:51:23,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:51:23,220 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:51:23,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:51:23,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:51:23,221 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:51:23,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:51:23,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:51:23,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:51:23,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:51:23,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:51:23,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:51:23,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:51:23,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:51:23,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:51:23,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:51:23,226 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:51:23,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:51:23,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:51:23,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:51:23,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:23,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:51:23,228 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:51:23,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:51:23,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:51:23,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:51:23,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:51:23,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:51:23,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:51:23,229 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_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df7ae3db93e92270618cc08b15772305b39e7a8184e8ea2221160c76e4a6368e [2022-11-03 03:51:23,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:51:23,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:51:23,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:51:23,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:51:23,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:51:23,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/eca-rers2012/Problem07_label38.c [2022-11-03 03:51:23,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/data/9e04ec8a2/ab3fbb054a464698ad08926d54e27e72/FLAG89ec38253 [2022-11-03 03:51:26,536 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:51:26,537 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/sv-benchmarks/c/eca-rers2012/Problem07_label38.c [2022-11-03 03:51:26,787 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/data/9e04ec8a2/ab3fbb054a464698ad08926d54e27e72/FLAG89ec38253 [2022-11-03 03:51:27,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/data/9e04ec8a2/ab3fbb054a464698ad08926d54e27e72 [2022-11-03 03:51:27,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:51:27,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:51:27,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:27,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:51:27,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:51:27,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:27" (1/1) ... [2022-11-03 03:51:27,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b36a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:27, skipping insertion in model container [2022-11-03 03:51:27,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:27" (1/1) ... [2022-11-03 03:51:27,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:51:28,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:51:39,730 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_5999e5d1-e849-4a86-b904-947827f17831/sv-benchmarks/c/eca-rers2012/Problem07_label38.c[2774782,2774795] [2022-11-03 03:51:39,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:39,791 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:51:46,838 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_5999e5d1-e849-4a86-b904-947827f17831/sv-benchmarks/c/eca-rers2012/Problem07_label38.c[2774782,2774795] [2022-11-03 03:51:46,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:51:47,667 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:51:47,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47 WrapperNode [2022-11-03 03:51:47,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:51:47,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:47,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:51:47,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:51:47,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:48,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:51,315 INFO L138 Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83773 [2022-11-03 03:51:51,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:51:51,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:51:51,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:51:51,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:51:51,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:51,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:51,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:51,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:53,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:53,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:53,971 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:54,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:54,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:51:54,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:51:54,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:51:54,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:51:54,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (1/1) ... [2022-11-03 03:51:54,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:51:54,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:51:54,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:51:54,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5999e5d1-e849-4a86-b904-947827f17831/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:51:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:51:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:51:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:51:54,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:51:54,736 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:51:54,738 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:52:44,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:52:45,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:52:45,599 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:52:45,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:45 BoogieIcfgContainer [2022-11-03 03:52:45,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:52:45,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:52:45,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:52:45,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:52:45,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:51:27" (1/3) ... [2022-11-03 03:52:45,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228d9ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:45, skipping insertion in model container [2022-11-03 03:52:45,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:47" (2/3) ... [2022-11-03 03:52:45,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228d9ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:52:45, skipping insertion in model container [2022-11-03 03:52:45,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:52:45" (3/3) ... [2022-11-03 03:52:45,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem07_label38.c [2022-11-03 03:52:45,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:52:45,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:52:45,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:52:45,966 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61f0312a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:52:45,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:52:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 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) [2022-11-03 03:52:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10086 [2022-11-03 03:52:46,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:46,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:46,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash 64792696, now seen corresponding path program 1 times [2022-11-03 03:52:46,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:46,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219805765] [2022-11-03 03:52:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:24,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:24,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219805765] [2022-11-03 03:53:24,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219805765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:24,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:24,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:53:24,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289398863] [2022-11-03 03:53:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:24,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:24,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:24,836 INFO L87 Difference]: Start difference. First operand has 10135 states, 10133 states have (on average 1.9951643146156124) internal successors, (20217), 10134 states have internal predecessors, (20217), 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 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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) [2022-11-03 03:54:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:10,403 INFO L93 Difference]: Finished difference Result 30401 states and 60647 transitions. [2022-11-03 03:54:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:54:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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 10085 [2022-11-03 03:54:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:10,523 INFO L225 Difference]: With dead ends: 30401 [2022-11-03 03:54:10,523 INFO L226 Difference]: Without dead ends: 20263 [2022-11-03 03:54:10,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:54:10,542 INFO L413 NwaCegarLoop]: 4042 mSDtfsCounter, 416 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30830 mSolverCounterSat, 12469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 4092 SdHoareTripleChecker+Invalid, 43299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12469 IncrementalHoareTripleChecker+Valid, 30830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:10,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 4092 Invalid, 43299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12469 Valid, 30830 Invalid, 0 Unknown, 0 Unchecked, 44.5s Time] [2022-11-03 03:54:10,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20263 states. [2022-11-03 03:54:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20263 to 20263. [2022-11-03 03:54:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20263 states, 20262 states have (on average 1.799279439344586) internal successors, (36457), 20262 states have internal predecessors, (36457), 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) [2022-11-03 03:54:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20263 states to 20263 states and 36457 transitions. [2022-11-03 03:54:11,124 INFO L78 Accepts]: Start accepts. Automaton has 20263 states and 36457 transitions. Word has length 10085 [2022-11-03 03:54:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:11,142 INFO L495 AbstractCegarLoop]: Abstraction has 20263 states and 36457 transitions. [2022-11-03 03:54:11,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3361.6666666666665) internal successors, (10085), 2 states have internal predecessors, (10085), 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) [2022-11-03 03:54:11,146 INFO L276 IsEmpty]: Start isEmpty. Operand 20263 states and 36457 transitions. [2022-11-03 03:54:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10090 [2022-11-03 03:54:12,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:12,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:12,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:54:12,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 482779808, now seen corresponding path program 1 times [2022-11-03 03:54:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:12,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991295570] [2022-11-03 03:54:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat