./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/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 aa38d95315e187ea5fe9b62230d938985648af7e7d892502233db02121b7b545 --- 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 10:11:14,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:11:14,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:11:14,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:11:14,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:11:14,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:11:14,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:11:14,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:11:14,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:11:14,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:11:14,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:11:14,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:11:14,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:11:14,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:11:14,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:11:14,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:11:14,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:11:14,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:11:14,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:11:14,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:11:14,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:11:14,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:11:14,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:11:14,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:11:14,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:11:14,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:11:14,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:11:14,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:11:14,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:11:14,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:11:14,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:11:14,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:11:14,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:11:14,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:11:14,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:11:14,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:11:14,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:11:14,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:11:14,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:11:14,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:11:14,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:11:14,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:11:14,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:11:14,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:11:14,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:11:14,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:11:14,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:11:14,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:11:14,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:11:14,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:11:14,928 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:11:14,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:11:14,930 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:11:14,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:11:14,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:11:14,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:11:14,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:11:14,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:11:14,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:11:14,931 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:11:14,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:11:14,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:11:14,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:11:14,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:11:14,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:11:14,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:11:14,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:14,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:11:14,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:11:14,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:11:14,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:11:14,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:11:14,935 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:11:14,935 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:11:14,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:11:14,936 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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa38d95315e187ea5fe9b62230d938985648af7e7d892502233db02121b7b545 [2022-10-17 10:11:15,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:11:15,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:11:15,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:11:15,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:11:15,251 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:11:15,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c [2022-10-17 10:11:15,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/data/b7d0d8602/f35fcc25168a4458b3c4e6dd58c89039/FLAGdb69c0462 [2022-10-17 10:11:16,374 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:11:16,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c [2022-10-17 10:11:16,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/data/b7d0d8602/f35fcc25168a4458b3c4e6dd58c89039/FLAGdb69c0462 [2022-10-17 10:11:16,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/data/b7d0d8602/f35fcc25168a4458b3c4e6dd58c89039 [2022-10-17 10:11:16,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:11:16,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:11:16,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:16,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:11:16,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:11:16,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:16" (1/1) ... [2022-10-17 10:11:16,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb23b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:16, skipping insertion in model container [2022-10-17 10:11:16,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:11:16" (1/1) ... [2022-10-17 10:11:16,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:11:16,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:11:19,598 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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[378560,378573] [2022-10-17 10:11:19,636 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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[383339,383352] [2022-10-17 10:11:19,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:19,950 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:11:21,231 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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[378560,378573] [2022-10-17 10:11:21,239 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_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-1.c[383339,383352] [2022-10-17 10:11:21,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:21,344 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:11:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21 WrapperNode [2022-10-17 10:11:21,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:21,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:21,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:11:21,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:11:21,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:21,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,004 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-10-17 10:11:22,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:22,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:11:22,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:11:22,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:11:22,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:11:22,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:11:22,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:11:22,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:11:22,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (1/1) ... [2022-10-17 10:11:22,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:22,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:11:22,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6168bc5-5c89-48eb-a22c-fe15c4d5d5ba/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:11:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:11:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:11:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:11:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:11:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:11:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:11:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:11:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:11:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:11:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:11:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:11:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:11:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:11:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:11:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:11:22,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:11:22,950 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:11:22,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:11:31,262 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:11:31,294 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:11:31,294 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-10-17 10:11:31,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:31 BoogieIcfgContainer [2022-10-17 10:11:31,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:11:31,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:11:31,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:11:31,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:11:31,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:11:16" (1/3) ... [2022-10-17 10:11:31,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c985b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:31, skipping insertion in model container [2022-10-17 10:11:31,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:21" (2/3) ... [2022-10-17 10:11:31,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c985b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:31, skipping insertion in model container [2022-10-17 10:11:31,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:31" (3/3) ... [2022-10-17 10:11:31,307 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.08.cil-1.c [2022-10-17 10:11:31,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:11:31,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:11:31,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:31,421 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;@25793b2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:31,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:11:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-17 10:11:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:11:31,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:31,454 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] [2022-10-17 10:11:31,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-10-17 10:11:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:31,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165514771] [2022-10-17 10:11:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:31,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:11:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:11:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:11:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:11:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:11:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:32,050 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 10:11:32,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:32,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165514771] [2022-10-17 10:11:32,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165514771] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:32,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:32,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:11:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12924863] [2022-10-17 10:11:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:11:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:11:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:32,107 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 10:11:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:33,884 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-10-17 10:11:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:11:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 134 [2022-10-17 10:11:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:33,917 INFO L225 Difference]: With dead ends: 5022 [2022-10-17 10:11:33,917 INFO L226 Difference]: Without dead ends: 2496 [2022-10-17 10:11:33,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:11:33,931 INFO L413 NwaCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16860 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:33,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 16860 Invalid, 563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:11:33,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-10-17 10:11:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-10-17 10:11:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-17 10:11:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-10-17 10:11:34,191 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-10-17 10:11:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:34,192 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-10-17 10:11:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 10:11:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-10-17 10:11:34,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:11:34,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:34,209 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] [2022-10-17 10:11:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:11:34,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-10-17 10:11:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526204827] [2022-10-17 10:11:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:34,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:11:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:11:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:11:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:11:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:11:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:34,638 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 10:11:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526204827] [2022-10-17 10:11:34,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526204827] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:34,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:34,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:11:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165572045] [2022-10-17 10:11:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:34,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:34,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:11:34,646 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 10:11:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:37,352 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-10-17 10:11:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:11:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2022-10-17 10:11:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:37,391 INFO L225 Difference]: With dead ends: 3126 [2022-10-17 10:11:37,391 INFO L226 Difference]: Without dead ends: 2865 [2022-10-17 10:11:37,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:11:37,398 INFO L413 NwaCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:37,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 17032 Invalid, 1531 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-17 10:11:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-10-17 10:11:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-10-17 10:11:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-10-17 10:11:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-10-17 10:11:37,550 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-10-17 10:11:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:37,552 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-10-17 10:11:37,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 10:11:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-10-17 10:11:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:11:37,560 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:37,561 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] [2022-10-17 10:11:37,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:11:37,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:37,563 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-10-17 10:11:37,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:37,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823144093] [2022-10-17 10:11:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:37,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:37,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:11:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:37,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:11:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:11:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:11:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:11:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:37,934 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 10:11:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:37,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823144093] [2022-10-17 10:11:37,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823144093] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:37,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:37,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:11:37,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714129489] [2022-10-17 10:11:37,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:37,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:11:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:11:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:11:37,941 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 10:11:41,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:41,005 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-10-17 10:11:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:11:41,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-10-17 10:11:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:41,027 INFO L225 Difference]: With dead ends: 3779 [2022-10-17 10:11:41,027 INFO L226 Difference]: Without dead ends: 3246 [2022-10-17 10:11:41,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:11:41,032 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:41,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5079 Valid, 21869 Invalid, 2287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:11:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-10-17 10:11:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-10-17 10:11:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-10-17 10:11:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-10-17 10:11:41,190 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-10-17 10:11:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:41,191 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-10-17 10:11:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 10:11:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-10-17 10:11:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:11:41,194 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:41,194 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] [2022-10-17 10:11:41,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:11:41,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-10-17 10:11:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:41,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399267552] [2022-10-17 10:11:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:41,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 10:11:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:11:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-17 10:11:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-17 10:11:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-17 10:11:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:41,512 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 10:11:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:41,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399267552] [2022-10-17 10:11:41,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399267552] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:41,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:41,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:11:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108492999] [2022-10-17 10:11:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:11:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:11:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:11:41,515 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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)