./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.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_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/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_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/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_c8071fb3-f6b2-4a62-a685-88725525ad32/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 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 --- 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 10:37:36,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:37:36,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:37:36,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:37:36,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:37:36,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:37:36,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:37:36,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:37:36,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:37:36,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:37:36,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:37:36,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:37:36,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:37:36,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:37:36,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:37:36,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:37:36,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:37:36,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:37:36,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:37:36,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:37:36,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:37:36,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:37:36,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:37:36,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:37:36,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:37:36,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:37:36,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:37:36,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:37:36,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:37:36,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:37:36,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:37:36,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:37:36,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:37:36,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:37:36,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:37:36,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:37:36,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:37:36,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:37:36,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:37:36,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:37:36,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:37:36,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:37:36,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:37:36,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:37:36,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:37:36,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:37:36,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:37:36,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:37:36,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:37:36,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:37:36,919 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:37:36,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:37:36,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:37:36,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:37:36,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:37:36,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:37:36,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:37:36,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:37:36,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:37:36,922 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:37:36,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:37:36,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:37:36,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:37:36,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:37:36,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:37:36,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:37:36,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:37:36,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:37:36,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:37:36,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:37:36,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:37:36,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:37:36,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:37:36,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:37:36,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:37:36,927 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_c8071fb3-f6b2-4a62-a685-88725525ad32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ee209640ee994f311a04b9c2d813fadfd34b19e8b71a748e88ebcbbe5883af1 [2022-10-17 10:37:37,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:37:37,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:37:37,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:37:37,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:37:37,214 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:37:37,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2022-10-17 10:37:37,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/data/646580df6/541349f95d90434686dcc946f1104321/FLAGcaf33650a [2022-10-17 10:37:38,245 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:37:38,246 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c [2022-10-17 10:37:38,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/data/646580df6/541349f95d90434686dcc946f1104321/FLAGcaf33650a [2022-10-17 10:37:38,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/data/646580df6/541349f95d90434686dcc946f1104321 [2022-10-17 10:37:38,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:37:38,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:37:38,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:37:38,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:37:38,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:37:38,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:37:38" (1/1) ... [2022-10-17 10:37:38,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655d2a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:38, skipping insertion in model container [2022-10-17 10:37:38,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:37:38" (1/1) ... [2022-10-17 10:37:38,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:37:38,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:37:41,458 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_c8071fb3-f6b2-4a62-a685-88725525ad32/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[381679,381692] [2022-10-17 10:37:41,491 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_c8071fb3-f6b2-4a62-a685-88725525ad32/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[383339,383352] [2022-10-17 10:37:41,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:37:41,730 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:37:43,071 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_c8071fb3-f6b2-4a62-a685-88725525ad32/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[381679,381692] [2022-10-17 10:37:43,075 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_c8071fb3-f6b2-4a62-a685-88725525ad32/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-2.c[383339,383352] [2022-10-17 10:37:43,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:37:43,162 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:37:43,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43 WrapperNode [2022-10-17 10:37:43,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:37:43,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:37:43,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:37:43,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:37:43,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:43,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:43,865 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-10-17 10:37:43,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:37:43,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:37:43,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:37:43,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:37:43,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:43,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,559 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:37:44,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:37:44,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:37:44,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:37:44,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (1/1) ... [2022-10-17 10:37:44,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:37:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:37:44,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:37:44,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8071fb3-f6b2-4a62-a685-88725525ad32/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:37:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:37:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:37:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:37:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:37:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:37:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:37:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:37:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-10-17 10:37:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-10-17 10:37:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:37:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:37:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:37:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:37:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:37:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:37:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:37:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:37:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:37:44,933 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:37:44,950 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:37:53,257 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:37:53,303 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:37:53,303 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-10-17 10:37:53,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:37:53 BoogieIcfgContainer [2022-10-17 10:37:53,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:37:53,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:37:53,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:37:53,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:37:53,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:37:38" (1/3) ... [2022-10-17 10:37:53,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372053e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:37:53, skipping insertion in model container [2022-10-17 10:37:53,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:37:43" (2/3) ... [2022-10-17 10:37:53,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372053e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:37:53, skipping insertion in model container [2022-10-17 10:37:53,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:37:53" (3/3) ... [2022-10-17 10:37:53,321 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-2.c [2022-10-17 10:37:53,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:37:53,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:37:53,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:37:53,484 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;@4e11d6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:37:53,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:37:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 10:37:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:37:53,535 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:53,536 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] [2022-10-17 10:37:53,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-10-17 10:37:53,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:53,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892760046] [2022-10-17 10:37:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:37:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:37:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:54,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:37:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:37:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:37:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:54,126 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 10:37:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:54,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892760046] [2022-10-17 10:37:54,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892760046] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:54,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:54,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:37:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813329460] [2022-10-17 10:37:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:54,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:37:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:37:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:37:54,181 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:37:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:55,388 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-10-17 10:37:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:37:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-10-17 10:37:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:55,433 INFO L225 Difference]: With dead ends: 4852 [2022-10-17 10:37:55,433 INFO L226 Difference]: Without dead ends: 2395 [2022-10-17 10:37:55,446 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 10:37:55,451 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:55,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 16674 Invalid, 402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 10:37:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-10-17 10:37:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-10-17 10:37:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-10-17 10:37:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-10-17 10:37:55,661 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-10-17 10:37:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:55,663 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-10-17 10:37:55,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:37:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-10-17 10:37:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:37:55,669 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:55,669 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] [2022-10-17 10:37:55,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:37:55,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-10-17 10:37:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:55,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992431960] [2022-10-17 10:37:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:37:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:37:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:37:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:37:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:37:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:56,064 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 10:37:56,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:56,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992431960] [2022-10-17 10:37:56,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992431960] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:56,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:56,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:37:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469689478] [2022-10-17 10:37:56,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:56,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:37:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:37:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:37:56,081 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:37:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:37:57,900 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-10-17 10:37:57,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:37:57,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-10-17 10:37:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:37:57,924 INFO L225 Difference]: With dead ends: 2856 [2022-10-17 10:37:57,925 INFO L226 Difference]: Without dead ends: 2660 [2022-10-17 10:37:57,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:37:57,930 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16743 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:37:57,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4733 Valid, 16743 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:37:57,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-10-17 10:37:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-10-17 10:37:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-10-17 10:37:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-10-17 10:37:58,046 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-10-17 10:37:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:37:58,047 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-10-17 10:37:58,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:37:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-10-17 10:37:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:37:58,051 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:37:58,052 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] [2022-10-17 10:37:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:37:58,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:37:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:37:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-10-17 10:37:58,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:37:58,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428539109] [2022-10-17 10:37:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:37:58,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:37:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:58,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:37:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:37:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:37:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:37:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:37:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:37:58,391 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 10:37:58,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:37:58,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428539109] [2022-10-17 10:37:58,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428539109] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:37:58,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:37:58,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:37:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185686350] [2022-10-17 10:37:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:37:58,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:37:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:37:58,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:37:58,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:37:58,396 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:38:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:00,409 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-10-17 10:38:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:38:00,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-10-17 10:38:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:00,430 INFO L225 Difference]: With dead ends: 3324 [2022-10-17 10:38:00,430 INFO L226 Difference]: Without dead ends: 2929 [2022-10-17 10:38:00,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:38:00,444 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 4725 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:00,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 21376 Invalid, 1621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:38:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-10-17 10:38:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-10-17 10:38:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-10-17 10:38:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-10-17 10:38:00,599 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-10-17 10:38:00,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:00,599 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-10-17 10:38:00,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:38:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-10-17 10:38:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:38:00,601 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:00,602 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] [2022-10-17 10:38:00,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:38:00,602 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:00,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:00,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-10-17 10:38:00,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:00,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26551246] [2022-10-17 10:38:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:00,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:38:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:00,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:38:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:38:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:38:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:38:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:00,786 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 10:38:00,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:00,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26551246] [2022-10-17 10:38:00,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26551246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:00,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:00,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:38:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691740823] [2022-10-17 10:38:00,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:00,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:38:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:38:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:38:00,789 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:38:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:02,626 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-10-17 10:38:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:38:02,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-10-17 10:38:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:02,649 INFO L225 Difference]: With dead ends: 4012 [2022-10-17 10:38:02,649 INFO L226 Difference]: Without dead ends: 3431 [2022-10-17 10:38:02,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:38:02,654 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 4719 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 21364 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:02,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 21364 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:38:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-10-17 10:38:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-10-17 10:38:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-10-17 10:38:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-10-17 10:38:02,811 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-10-17 10:38:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:02,811 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-10-17 10:38:02,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:38:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-10-17 10:38:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:38:02,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:02,814 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] [2022-10-17 10:38:02,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:38:02,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:02,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-10-17 10:38:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:02,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887214669] [2022-10-17 10:38:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:38:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:38:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:38:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:38:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:38:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:02,981 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 10:38:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887214669] [2022-10-17 10:38:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887214669] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:02,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:02,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:38:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108802014] [2022-10-17 10:38:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:02,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:38:02,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:02,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:38:02,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:38:02,984 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:38:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:04,839 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-10-17 10:38:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:38:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-10-17 10:38:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:04,872 INFO L225 Difference]: With dead ends: 5346 [2022-10-17 10:38:04,872 INFO L226 Difference]: Without dead ends: 4389 [2022-10-17 10:38:04,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:38:04,879 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 4718 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:04,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 21359 Invalid, 1604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:38:04,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-10-17 10:38:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-10-17 10:38:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-10-17 10:38:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-10-17 10:38:05,137 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-10-17 10:38:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:05,137 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-10-17 10:38:05,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:38:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-10-17 10:38:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-17 10:38:05,141 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:05,141 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] [2022-10-17 10:38:05,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:38:05,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:05,142 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-10-17 10:38:05,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:05,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852764246] [2022-10-17 10:38:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:38:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:38:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:38:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-17 10:38:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 10:38:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:05,311 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 10:38:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:05,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852764246] [2022-10-17 10:38:05,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852764246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:05,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:05,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:38:05,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826543843] [2022-10-17 10:38:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:05,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:38:05,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:38:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:38:05,411 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)