./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/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 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 --- 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 10:13:42,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:42,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:42,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:42,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:42,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:42,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:42,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:42,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:42,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:42,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:42,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:42,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:42,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:42,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:42,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:42,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:42,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:42,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:42,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:42,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:42,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:42,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:42,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:42,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:42,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:42,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:42,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:42,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:42,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:42,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:42,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:42,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:42,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:42,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:42,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:42,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:42,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:42,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:42,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:42,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:42,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:13:43,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:43,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:43,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:43,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:43,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:13:43,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:13:43,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:43,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:43,005 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:43,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:43,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:13:43,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:43,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:13:43,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:43,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:13:43,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:13:43,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:13:43,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:13:43,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:43,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:43,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:13:43,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:43,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:43,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:13:43,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:43,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:43,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:13:43,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:13:43,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:43,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:13:43,010 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:13:43,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:13:43,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:13:43,010 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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c0fd06ffbdf36f84b0329229d349f7809a823e5b3b7481a48579e7931c7ae64 [2022-10-17 10:13:43,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:43,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:43,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:43,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:43,292 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:43,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2022-10-17 10:13:43,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/data/9cc493d3f/442a1645c4784833ba958d6c9212bab7/FLAG236a8bb5b [2022-10-17 10:13:44,538 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:13:44,539 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c [2022-10-17 10:13:44,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/data/9cc493d3f/442a1645c4784833ba958d6c9212bab7/FLAG236a8bb5b [2022-10-17 10:13:44,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/data/9cc493d3f/442a1645c4784833ba958d6c9212bab7 [2022-10-17 10:13:44,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:13:44,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:13:44,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:44,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:13:44,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:13:44,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:44" (1/1) ... [2022-10-17 10:13:44,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2199bcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:44, skipping insertion in model container [2022-10-17 10:13:44,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:44" (1/1) ... [2022-10-17 10:13:44,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:13:45,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:13:47,534 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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2022-10-17 10:13:47,562 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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2022-10-17 10:13:47,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:47,982 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:13:49,195 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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[380593,380606] [2022-10-17 10:13:49,201 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_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/sv-benchmarks/c/combinations/Problem05_label49+token_ring.15.cil.c[383339,383352] [2022-10-17 10:13:49,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:49,324 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:13:49,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49 WrapperNode [2022-10-17 10:13:49,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:49,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:49,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:13:49,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:13:49,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:49,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,006 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-10-17 10:13:50,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:50,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:13:50,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:13:50,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:13:50,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,709 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:13:50,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:13:50,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:13:50,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:13:50,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (1/1) ... [2022-10-17 10:13:50,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:50,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:51,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:51,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72390fbe-9d3a-4a7b-a0f8-1d140a1a174b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:13:51,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:13:51,137 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:13:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:13:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:13:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:13:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:13:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:13:51,138 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-10-17 10:13:51,138 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-10-17 10:13:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:13:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:13:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:13:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:13:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:13:51,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:13:51,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:13:51,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:13:51,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:13:51,355 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:13:51,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:14:00,545 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:14:00,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:14:00,580 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-10-17 10:14:00,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:00 BoogieIcfgContainer [2022-10-17 10:14:00,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:14:00,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:14:00,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:14:00,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:14:00,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:13:44" (1/3) ... [2022-10-17 10:14:00,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61be4ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:00, skipping insertion in model container [2022-10-17 10:14:00,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:49" (2/3) ... [2022-10-17 10:14:00,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61be4ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:14:00, skipping insertion in model container [2022-10-17 10:14:00,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:14:00" (3/3) ... [2022-10-17 10:14:00,607 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.15.cil.c [2022-10-17 10:14:00,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:14:00,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:14:00,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:14:00,791 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;@3c58c851, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:14:00,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:14:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-10-17 10:14:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-17 10:14:00,841 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:00,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:00,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2022-10-17 10:14:00,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:00,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643790498] [2022-10-17 10:14:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:14:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:14:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-17 10:14:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 10:14:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-17 10:14:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:01,758 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 10:14:01,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:01,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643790498] [2022-10-17 10:14:01,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643790498] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:01,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:01,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:14:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829155495] [2022-10-17 10:14:01,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:01,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:14:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:01,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:14:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:14:01,820 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 10:14:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:04,621 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2022-10-17 10:14:04,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:14:04,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-10-17 10:14:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:04,657 INFO L225 Difference]: With dead ends: 5336 [2022-10-17 10:14:04,658 INFO L226 Difference]: Without dead ends: 2681 [2022-10-17 10:14:04,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:14:04,672 INFO L413 NwaCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12501 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17238 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:04,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 17238 Invalid, 842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 10:14:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-10-17 10:14:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2022-10-17 10:14:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-10-17 10:14:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2022-10-17 10:14:04,856 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2022-10-17 10:14:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:04,856 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2022-10-17 10:14:04,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 10:14:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2022-10-17 10:14:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-17 10:14:04,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:04,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:04,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:14:04,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:04,864 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2022-10-17 10:14:04,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:04,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14341097] [2022-10-17 10:14:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:04,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:14:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:14:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-17 10:14:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 10:14:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-17 10:14:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:05,103 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 10:14:05,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:05,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14341097] [2022-10-17 10:14:05,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14341097] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:05,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:05,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:14:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682610399] [2022-10-17 10:14:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:05,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:14:05,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:05,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:14:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:14:05,107 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 10:14:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:14:07,479 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2022-10-17 10:14:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:14:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-10-17 10:14:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:14:07,499 INFO L225 Difference]: With dead ends: 3071 [2022-10-17 10:14:07,499 INFO L226 Difference]: Without dead ends: 2681 [2022-10-17 10:14:07,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:14:07,503 INFO L413 NwaCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12298 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16965 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:14:07,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 16965 Invalid, 841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-17 10:14:07,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-10-17 10:14:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2022-10-17 10:14:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-10-17 10:14:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2022-10-17 10:14:07,626 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2022-10-17 10:14:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:14:07,627 INFO L495 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2022-10-17 10:14:07,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 10:14:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2022-10-17 10:14:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-10-17 10:14:07,631 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:14:07,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:14:07,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:14:07,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:14:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2022-10-17 10:14:07,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:07,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978772561] [2022-10-17 10:14:07,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:14:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-17 10:14:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-17 10:14:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-10-17 10:14:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-10-17 10:14:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:07,967 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 10:14:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978772561] [2022-10-17 10:14:07,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978772561] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:07,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:07,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:14:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869836436] [2022-10-17 10:14:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:14:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:14:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:14:07,971 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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)