./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.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_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/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_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/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_c885352b-dceb-4264-8039-28e420946de4/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 5d96188e8fe998bfd3065ae27ea6234f9d513096a1254a43c8a37ba002e37de6 --- 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 10:12:00,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:12:00,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:12:00,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:12:00,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:12:00,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:12:00,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:12:00,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:12:00,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:12:00,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:12:00,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:12:00,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:12:00,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:12:00,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:12:00,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:12:00,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:12:00,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:12:00,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:12:00,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:12:00,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:12:00,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:12:00,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:12:00,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:12:00,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:12:00,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:12:00,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:12:00,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:12:00,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:12:00,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:12:00,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:12:00,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:12:00,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:12:00,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:12:00,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:12:00,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:12:00,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:12:00,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:12:00,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:12:00,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:12:00,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:12:00,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:12:00,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:12:01,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:12:01,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:12:01,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:12:01,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:12:01,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:12:01,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:12:01,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:12:01,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:12:01,006 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:12:01,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:12:01,007 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:12:01,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:12:01,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:12:01,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:12:01,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:12:01,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:12:01,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:12:01,009 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:12:01,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:12:01,009 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:12:01,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:12:01,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:12:01,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:12:01,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:12:01,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:01,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:12:01,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:12:01,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:12:01,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:12:01,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:12:01,013 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:12:01,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:12:01,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:12:01,013 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_c885352b-dceb-4264-8039-28e420946de4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d96188e8fe998bfd3065ae27ea6234f9d513096a1254a43c8a37ba002e37de6 [2022-10-17 10:12:01,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:12:01,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:12:01,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:12:01,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:12:01,386 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:12:01,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c [2022-10-17 10:12:01,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/data/13a8efc0b/dbeff41bcc454daf9f8a7f8d8503313f/FLAG23798aefd [2022-10-17 10:12:02,461 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:12:02,462 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c [2022-10-17 10:12:02,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/data/13a8efc0b/dbeff41bcc454daf9f8a7f8d8503313f/FLAG23798aefd [2022-10-17 10:12:02,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/data/13a8efc0b/dbeff41bcc454daf9f8a7f8d8503313f [2022-10-17 10:12:02,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:12:02,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:12:02,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:02,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:12:02,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:12:02,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:02" (1/1) ... [2022-10-17 10:12:02,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781c1608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:02, skipping insertion in model container [2022-10-17 10:12:02,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:12:02" (1/1) ... [2022-10-17 10:12:02,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:12:03,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:12:05,659 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_c885352b-dceb-4264-8039-28e420946de4/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c[380593,380606] [2022-10-17 10:12:05,693 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_c885352b-dceb-4264-8039-28e420946de4/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c[383339,383352] [2022-10-17 10:12:06,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:06,074 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:12:07,337 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_c885352b-dceb-4264-8039-28e420946de4/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c[380593,380606] [2022-10-17 10:12:07,345 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_c885352b-dceb-4264-8039-28e420946de4/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-2.c[383339,383352] [2022-10-17 10:12:07,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:12:07,458 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:12:07,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07 WrapperNode [2022-10-17 10:12:07,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:12:07,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:07,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:12:07,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:12:07,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:07,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,119 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-10-17 10:12:08,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:12:08,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:12:08,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:12:08,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:12:08,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:12:08,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:12:08,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:12:08,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:12:08,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (1/1) ... [2022-10-17 10:12:08,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:12:08,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:12:08,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:12:08,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c885352b-dceb-4264-8039-28e420946de4/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:12:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:12:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:12:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:12:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:12:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:12:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:12:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:12:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:12:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:12:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:12:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:12:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:12:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:12:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:12:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:12:09,188 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:12:09,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:12:18,670 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:12:18,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:12:18,720 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-10-17 10:12:18,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:18 BoogieIcfgContainer [2022-10-17 10:12:18,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:12:18,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:12:18,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:12:18,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:12:18,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:12:02" (1/3) ... [2022-10-17 10:12:18,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6312e8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:18, skipping insertion in model container [2022-10-17 10:12:18,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:12:07" (2/3) ... [2022-10-17 10:12:18,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6312e8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:12:18, skipping insertion in model container [2022-10-17 10:12:18,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:12:18" (3/3) ... [2022-10-17 10:12:18,743 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.11.cil-2.c [2022-10-17 10:12:18,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:12:18,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:12:18,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:12:18,907 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;@595df61d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:12:18,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:12:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-10-17 10:12:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-17 10:12:18,947 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:18,947 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] [2022-10-17 10:12:18,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-10-17 10:12:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124481013] [2022-10-17 10:12:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:18,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:12:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:12:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:12:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-10-17 10:12:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-17 10:12:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:19,805 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 10:12:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:19,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124481013] [2022-10-17 10:12:19,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124481013] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:19,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:19,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:12:19,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768166872] [2022-10-17 10:12:19,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:19,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:12:19,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:12:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:12:19,895 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:12:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:22,273 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-10-17 10:12:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:12:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-10-17 10:12:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:22,314 INFO L225 Difference]: With dead ends: 5199 [2022-10-17 10:12:22,315 INFO L226 Difference]: Without dead ends: 2604 [2022-10-17 10:12:22,328 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 10:12:22,333 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17076 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:22,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 17076 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:12:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-10-17 10:12:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-10-17 10:12:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-10-17 10:12:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-10-17 10:12:22,581 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-10-17 10:12:22,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:22,582 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-10-17 10:12:22,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:12:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-10-17 10:12:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-17 10:12:22,600 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:22,600 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] [2022-10-17 10:12:22,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:12:22,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-10-17 10:12:22,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:22,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70110628] [2022-10-17 10:12:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:12:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:12:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:12:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-10-17 10:12:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-17 10:12:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:23,052 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 10:12:23,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:23,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70110628] [2022-10-17 10:12:23,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70110628] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:23,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:23,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:12:23,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806678048] [2022-10-17 10:12:23,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:23,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:12:23,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:12:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:12:23,057 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:12:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:12:27,419 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-10-17 10:12:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:12:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-10-17 10:12:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:12:27,444 INFO L225 Difference]: With dead ends: 3417 [2022-10-17 10:12:27,444 INFO L226 Difference]: Without dead ends: 3084 [2022-10-17 10:12:27,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:12:27,448 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17371 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:12:27,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 17371 Invalid, 1981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-10-17 10:12:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-10-17 10:12:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-10-17 10:12:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-10-17 10:12:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-10-17 10:12:27,640 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-10-17 10:12:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:12:27,640 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-10-17 10:12:27,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 10:12:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-10-17 10:12:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-17 10:12:27,644 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:12:27,645 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] [2022-10-17 10:12:27,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:12:27,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:12:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:12:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-10-17 10:12:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:12:27,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947399889] [2022-10-17 10:12:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:12:27,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:12:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:12:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:12:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-17 10:12:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-10-17 10:12:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-17 10:12:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:12:28,107 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 10:12:28,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:12:28,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947399889] [2022-10-17 10:12:28,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947399889] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:12:28,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:12:28,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:12:28,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549130249] [2022-10-17 10:12:28,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:12:28,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:12:28,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:12:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:12:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:12:28,114 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)