./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ --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 d659e8678e554595f4e384a4607241da3abd2c1673f83f24796966e0172bfb33 --- 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-dbf71c6-m [2022-10-17 10:14:13,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:14:13,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:14:13,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:14:13,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:14:13,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:14:13,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:14:13,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:14:13,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:14:13,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:14:13,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:14:13,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:14:13,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:14:13,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:14:13,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:14:13,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:14:13,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:14:13,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:14:13,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:14:13,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:14:13,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:14:13,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:14:13,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:14:13,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:14:13,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:14:13,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:14:13,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:14:13,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:14:13,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:14:13,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:14:13,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:14:13,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:14:13,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:14:13,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:14:13,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:14:13,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:14:13,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:14:13,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:14:13,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:14:13,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:14:13,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:14:13,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:14:13,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:14:13,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:14:13,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:14:13,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:14:13,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:14:13,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:14:13,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:14:13,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:14:13,805 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:14:13,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:14:13,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:14:13,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:14:13,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:14:13,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:14:13,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:14:13,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:14:13,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:14:13,808 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:14:13,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:14:13,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:14:13,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:14:13,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:14:13,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:14:13,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:14:13,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:13,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:14:13,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:14:13,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:14:13,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:14:13,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:14:13,813 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:14:13,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:14:13,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:14:13,814 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_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d659e8678e554595f4e384a4607241da3abd2c1673f83f24796966e0172bfb33 [2022-10-17 10:14:14,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:14:14,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:14:14,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:14:14,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:14:14,192 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:14:14,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c [2022-10-17 10:14:14,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/data/6d30ff0f2/c7a75622cdf2471e9b6ed27f754976d6/FLAG6e0b59059 [2022-10-17 10:14:15,363 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:14:15,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c [2022-10-17 10:14:15,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/data/6d30ff0f2/c7a75622cdf2471e9b6ed27f754976d6/FLAG6e0b59059 [2022-10-17 10:14:15,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/data/6d30ff0f2/c7a75622cdf2471e9b6ed27f754976d6 [2022-10-17 10:14:15,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:14:15,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:14:15,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:15,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:14:15,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:14:15,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:15" (1/1) ... [2022-10-17 10:14:15,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5377abc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:15, skipping insertion in model container [2022-10-17 10:14:15,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:14:15" (1/1) ... [2022-10-17 10:14:15,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:14:15,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:14:18,281 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_88684bb7-4d44-4a93-9d76-7679a9fe0d42/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[377612,377625] [2022-10-17 10:14:18,316 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_88684bb7-4d44-4a93-9d76-7679a9fe0d42/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[383339,383352] [2022-10-17 10:14:18,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:18,691 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:14:19,976 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_88684bb7-4d44-4a93-9d76-7679a9fe0d42/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[377612,377625] [2022-10-17 10:14:19,987 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_88684bb7-4d44-4a93-9d76-7679a9fe0d42/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[383339,383352] [2022-10-17 10:14:20,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:14:20,146 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:14:20,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20 WrapperNode [2022-10-17 10:14:20,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:14:20,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:20,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:14:20,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:14:20,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:20,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:20,900 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-10-17 10:14:20,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:14:20,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:14:20,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:14:20,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:14:20,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:20,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:14:21,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:14:21,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:14:21,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:14:21,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (1/1) ... [2022-10-17 10:14:21,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:14:21,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:14:21,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:14:21,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88684bb7-4d44-4a93-9d76-7679a9fe0d42/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:14:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:14:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:14:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:14:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:14:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:14:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:14:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:14:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:14:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:14:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:14:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:14:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:14:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:14:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:14:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:14:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:14:21,838 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:14:21,840 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:14:30,391 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:14:30,437 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:14:30,437 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 10:14:30,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:30 BoogieIcfgContainer [2022-10-17 10:14:30,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:14:30,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:14:30,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:14:30,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:14:30,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:14:15" (1/3) ... [2022-10-17 10:14:30,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166edb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:30, skipping insertion in model container [2022-10-17 10:14:30,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:14:20" (2/3) ... [2022-10-17 10:14:30,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166edb72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:30, skipping insertion in model container [2022-10-17 10:14:30,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:30" (3/3) ... [2022-10-17 10:14:30,452 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.10.cil-2.c [2022-10-17 10:14:30,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:14:30,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:14:30,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:30,590 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ed53560, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:30,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:14:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-17 10:14:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 10:14:30,635 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:30,636 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] [2022-10-17 10:14:30,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-10-17 10:14:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:30,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859983969] [2022-10-17 10:14:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:14:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:14:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:14:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:14:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-10-17 10:14:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:31,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:31,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859983969] [2022-10-17 10:14:31,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859983969] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:31,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:31,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:14:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528748374] [2022-10-17 10:14:31,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:14:31,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:14:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:14:31,491 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:14:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:33,384 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-10-17 10:14:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:14:33,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-10-17 10:14:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:33,417 INFO L225 Difference]: With dead ends: 5140 [2022-10-17 10:14:33,417 INFO L226 Difference]: Without dead ends: 2568 [2022-10-17 10:14:33,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:14:33,430 INFO L413 NwaCegarLoop]: 4589 mSDtfsCounter, 882 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 17002 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:33,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 17002 Invalid, 674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:14:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-10-17 10:14:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-10-17 10:14:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-17 10:14:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-10-17 10:14:33,597 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-10-17 10:14:33,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:33,598 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-10-17 10:14:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:14:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-10-17 10:14:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 10:14:33,606 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:33,607 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] [2022-10-17 10:14:33,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:14:33,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:33,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-10-17 10:14:33,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:33,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139381301] [2022-10-17 10:14:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:33,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:14:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:14:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:14:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:14:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-10-17 10:14:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:34,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139381301] [2022-10-17 10:14:34,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139381301] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:34,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:34,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:14:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975163479] [2022-10-17 10:14:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:34,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:14:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:34,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:14:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:14:34,118 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:14:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:38,385 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-10-17 10:14:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:14:38,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-10-17 10:14:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:38,409 INFO L225 Difference]: With dead ends: 3341 [2022-10-17 10:14:38,410 INFO L226 Difference]: Without dead ends: 3032 [2022-10-17 10:14:38,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:14:38,415 INFO L413 NwaCegarLoop]: 4828 mSDtfsCounter, 5220 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5237 SdHoareTripleChecker+Valid, 22278 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:38,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5237 Valid, 22278 Invalid, 2881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-17 10:14:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-10-17 10:14:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-10-17 10:14:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-10-17 10:14:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-10-17 10:14:38,600 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-10-17 10:14:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:38,601 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-10-17 10:14:38,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:14:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-10-17 10:14:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 10:14:38,605 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:38,605 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] [2022-10-17 10:14:38,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:14:38,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:38,607 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-10-17 10:14:38,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:38,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000374006] [2022-10-17 10:14:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:38,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:14:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-17 10:14:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 10:14:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-10-17 10:14:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-10-17 10:14:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:38,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000374006] [2022-10-17 10:14:38,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000374006] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:38,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:38,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:14:38,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560256987] [2022-10-17 10:14:38,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:38,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:14:38,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:38,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:14:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:14:38,911 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)