./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN --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 a50787eee309f695181bc37c4f84940bb8fed2cb76457a2c563ef0feb29ebac8 --- 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-6b4ec56 [2022-11-20 11:58:54,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:54,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:54,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:54,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:54,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:54,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:54,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:54,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:54,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:54,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:54,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:54,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:54,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:54,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:54,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:54,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:54,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:54,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:54,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:54,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:54,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:54,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:54,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:54,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:54,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:54,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:54,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:54,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:54,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:54,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:54,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:54,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:54,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:54,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:54,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:54,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:54,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:54,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:54,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:54,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:54,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:58:54,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:54,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:54,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:54,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:54,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:54,902 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:54,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:54,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:54,904 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:54,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:54,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:54,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:54,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:54,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:54,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:58:54,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:54,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:58:54,906 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:54,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:58:54,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:54,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:58:54,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:54,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:54,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:54,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:54,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:54,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:54,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:58:54,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:54,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:54,909 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:58:54,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:58:54,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:58:54,909 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_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50787eee309f695181bc37c4f84940bb8fed2cb76457a2c563ef0feb29ebac8 [2022-11-20 11:58:55,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:55,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:55,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:55,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:55,237 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:55,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c [2022-11-20 11:58:58,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:58:59,086 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:58:59,087 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c [2022-11-20 11:58:59,157 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/data/518a847c6/8c9cd6e03ec44a5d92eaf50b46245e77/FLAG21adba6f8 [2022-11-20 11:58:59,177 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/data/518a847c6/8c9cd6e03ec44a5d92eaf50b46245e77 [2022-11-20 11:58:59,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:58:59,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:58:59,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:59,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:58:59,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:58:59,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:58:59,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e566602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:59, skipping insertion in model container [2022-11-20 11:58:59,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:59" (1/1) ... [2022-11-20 11:58:59,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:58:59,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:02,149 WARN L237 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_8b536804-f46a-4de5-92ed-dc9c7733d867/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[377340,377353] [2022-11-20 11:59:02,186 WARN L237 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_8b536804-f46a-4de5-92ed-dc9c7733d867/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[383339,383352] [2022-11-20 11:59:02,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:02,508 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:59:03,834 WARN L237 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_8b536804-f46a-4de5-92ed-dc9c7733d867/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[377340,377353] [2022-11-20 11:59:03,851 WARN L237 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_8b536804-f46a-4de5-92ed-dc9c7733d867/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[383339,383352] [2022-11-20 11:59:03,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:03,945 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:59:03,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03 WrapperNode [2022-11-20 11:59:03,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:03,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:03,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:59:03,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:59:03,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:04,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:04,627 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-11-20 11:59:04,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:04,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:59:04,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:59:04,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:04,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:04,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:04,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:04,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:05,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:05,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:05,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:05,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:05,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:05,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:05,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:05,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:05,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (1/1) ... [2022-11-20 11:59:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:05,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:05,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b536804-f46a-4de5-92ed-dc9c7733d867/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:05,469 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 11:59:05,470 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 11:59:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 11:59:05,470 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 11:59:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 11:59:05,470 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 11:59:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 11:59:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 11:59:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 11:59:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 11:59:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 11:59:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 11:59:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:59:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:05,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:05,629 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:05,631 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:16,519 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:16,556 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:16,557 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-20 11:59:16,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:16 BoogieIcfgContainer [2022-11-20 11:59:16,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:16,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:16,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:16,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:16,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:58:59" (1/3) ... [2022-11-20 11:59:16,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c9685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:16, skipping insertion in model container [2022-11-20 11:59:16,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:03" (2/3) ... [2022-11-20 11:59:16,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c9685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:16, skipping insertion in model container [2022-11-20 11:59:16,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:16" (3/3) ... [2022-11-20 11:59:16,583 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.08.cil-1.c [2022-11-20 11:59:16,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:16,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:59:16,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:16,724 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;@76c2065b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:16,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:59:16,739 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) [2022-11-20 11:59:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:16,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:16,771 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] [2022-11-20 11:59:16,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-11-20 11:59:16,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:16,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855929599] [2022-11-20 11:59:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:17,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:17,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:17,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855929599] [2022-11-20 11:59:17,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855929599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:17,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:17,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:59:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48448615] [2022-11-20 11:59:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:59:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:59:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:59:17,432 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) [2022-11-20 11:59:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:19,356 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-11-20 11:59:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:59:19,359 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 [2022-11-20 11:59:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:19,385 INFO L225 Difference]: With dead ends: 5022 [2022-11-20 11:59:19,385 INFO L226 Difference]: Without dead ends: 2496 [2022-11-20 11:59:19,396 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 [2022-11-20 11:59:19,400 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 738 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 16643 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:19,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 16643 Invalid, 776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:59:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-11-20 11:59:19,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-11-20 11:59:19,559 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) [2022-11-20 11:59:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-11-20 11:59:19,574 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-11-20 11:59:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:19,574 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-11-20 11:59:19,575 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) [2022-11-20 11:59:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-11-20 11:59:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:19,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:19,586 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] [2022-11-20 11:59:19,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:59:19,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-11-20 11:59:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:19,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587656051] [2022-11-20 11:59:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587656051] [2022-11-20 11:59:19,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587656051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:19,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:19,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:59:19,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530937138] [2022-11-20 11:59:19,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:19,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:19,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:19,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:19,950 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) [2022-11-20 11:59:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:23,249 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-11-20 11:59:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:59:23,251 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 [2022-11-20 11:59:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:23,266 INFO L225 Difference]: With dead ends: 3126 [2022-11-20 11:59:23,267 INFO L226 Difference]: Without dead ends: 2865 [2022-11-20 11:59:23,270 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 [2022-11-20 11:59:23,271 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 5058 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 16784 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:23,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5073 Valid, 16784 Invalid, 1771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:59:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-11-20 11:59:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-11-20 11:59:23,376 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) [2022-11-20 11:59:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-11-20 11:59:23,389 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-11-20 11:59:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:23,389 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-11-20 11:59:23,389 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) [2022-11-20 11:59:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-11-20 11:59:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:23,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:23,392 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] [2022-11-20 11:59:23,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:59:23,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-11-20 11:59:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:23,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101719909] [2022-11-20 11:59:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:23,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:23,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101719909] [2022-11-20 11:59:23,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101719909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:23,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:23,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262035548] [2022-11-20 11:59:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:23,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:23,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:23,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:23,656 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) [2022-11-20 11:59:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:27,232 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-11-20 11:59:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:27,234 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 [2022-11-20 11:59:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:27,249 INFO L225 Difference]: With dead ends: 3779 [2022-11-20 11:59:27,249 INFO L226 Difference]: Without dead ends: 3246 [2022-11-20 11:59:27,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:27,261 INFO L413 NwaCegarLoop]: 4365 mSDtfsCounter, 5077 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21557 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:27,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5092 Valid, 21557 Invalid, 2586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 11:59:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-11-20 11:59:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-11-20 11:59:27,400 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) [2022-11-20 11:59:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-11-20 11:59:27,415 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-11-20 11:59:27,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:27,416 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-11-20 11:59:27,416 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) [2022-11-20 11:59:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-11-20 11:59:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:27,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:27,426 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] [2022-11-20 11:59:27,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:59:27,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-11-20 11:59:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:27,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035509844] [2022-11-20 11:59:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:27,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:27,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035509844] [2022-11-20 11:59:27,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035509844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:27,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:27,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:27,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642261898] [2022-11-20 11:59:27,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:27,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:27,725 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) [2022-11-20 11:59:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:31,257 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2022-11-20 11:59:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:31,258 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 [2022-11-20 11:59:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:31,279 INFO L225 Difference]: With dead ends: 4741 [2022-11-20 11:59:31,279 INFO L226 Difference]: Without dead ends: 3955 [2022-11-20 11:59:31,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:31,295 INFO L413 NwaCegarLoop]: 4223 mSDtfsCounter, 5157 mSDsluCounter, 16738 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 20961 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:31,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 20961 Invalid, 2329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:59:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-11-20 11:59:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2022-11-20 11:59:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-11-20 11:59:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2022-11-20 11:59:31,605 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2022-11-20 11:59:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:31,606 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2022-11-20 11:59:31,612 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) [2022-11-20 11:59:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2022-11-20 11:59:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:31,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:31,615 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] [2022-11-20 11:59:31,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:59:31,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:31,616 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2022-11-20 11:59:31,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:31,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90438245] [2022-11-20 11:59:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:31,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:31,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90438245] [2022-11-20 11:59:31,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90438245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:31,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:31,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957556252] [2022-11-20 11:59:31,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:31,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:31,932 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 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) [2022-11-20 11:59:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:35,621 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2022-11-20 11:59:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:35,622 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 [2022-11-20 11:59:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:35,644 INFO L225 Difference]: With dead ends: 6592 [2022-11-20 11:59:35,644 INFO L226 Difference]: Without dead ends: 5299 [2022-11-20 11:59:35,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:35,650 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5075 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5090 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:35,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5090 Valid, 21555 Invalid, 2577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:59:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-11-20 11:59:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2022-11-20 11:59:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-11-20 11:59:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2022-11-20 11:59:36,001 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2022-11-20 11:59:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:36,002 INFO L495 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2022-11-20 11:59:36,003 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) [2022-11-20 11:59:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2022-11-20 11:59:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:36,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:36,006 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] [2022-11-20 11:59:36,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:59:36,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2022-11-20 11:59:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544961785] [2022-11-20 11:59:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:36,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:36,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544961785] [2022-11-20 11:59:36,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544961785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:36,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:36,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:36,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292570580] [2022-11-20 11:59:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:36,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:36,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:36,277 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 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) [2022-11-20 11:59:40,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:40,198 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2022-11-20 11:59:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:40,200 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 [2022-11-20 11:59:40,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:40,240 INFO L225 Difference]: With dead ends: 10286 [2022-11-20 11:59:40,241 INFO L226 Difference]: Without dead ends: 7978 [2022-11-20 11:59:40,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:40,252 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5071 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5086 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:40,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5086 Valid, 21555 Invalid, 2549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:59:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-11-20 11:59:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2022-11-20 11:59:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-11-20 11:59:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2022-11-20 11:59:40,903 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2022-11-20 11:59:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:40,904 INFO L495 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2022-11-20 11:59:40,904 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) [2022-11-20 11:59:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2022-11-20 11:59:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:40,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:40,910 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] [2022-11-20 11:59:40,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:59:40,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2022-11-20 11:59:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:40,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687672921] [2022-11-20 11:59:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:41,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:41,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687672921] [2022-11-20 11:59:41,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687672921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:41,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:41,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:41,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955998197] [2022-11-20 11:59:41,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:41,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:41,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:41,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:41,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:41,193 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 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) [2022-11-20 11:59:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:45,837 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2022-11-20 11:59:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:45,838 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 [2022-11-20 11:59:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:45,908 INFO L225 Difference]: With dead ends: 17692 [2022-11-20 11:59:45,908 INFO L226 Difference]: Without dead ends: 13340 [2022-11-20 11:59:45,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:45,929 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5070 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5085 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:45,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5085 Valid, 21555 Invalid, 2536 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 11:59:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2022-11-20 11:59:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2022-11-20 11:59:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-11-20 11:59:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2022-11-20 11:59:47,288 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2022-11-20 11:59:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:47,288 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2022-11-20 11:59:47,289 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) [2022-11-20 11:59:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2022-11-20 11:59:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:47,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:47,298 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] [2022-11-20 11:59:47,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:59:47,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2022-11-20 11:59:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:47,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776618985] [2022-11-20 11:59:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:47,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776618985] [2022-11-20 11:59:47,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776618985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:47,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:47,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816618023] [2022-11-20 11:59:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:47,563 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 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) [2022-11-20 11:59:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:50,489 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2022-11-20 11:59:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:50,489 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 [2022-11-20 11:59:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:50,553 INFO L225 Difference]: With dead ends: 21934 [2022-11-20 11:59:50,553 INFO L226 Difference]: Without dead ends: 13481 [2022-11-20 11:59:50,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:59:50,588 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4771 mSDsluCounter, 16507 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 20683 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:50,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 20683 Invalid, 1316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:59:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2022-11-20 11:59:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2022-11-20 11:59:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-11-20 11:59:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2022-11-20 11:59:51,766 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2022-11-20 11:59:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:51,767 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2022-11-20 11:59:51,767 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) [2022-11-20 11:59:51,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2022-11-20 11:59:51,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:59:51,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:51,775 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] [2022-11-20 11:59:51,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:59:51,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:51,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:51,776 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2022-11-20 11:59:51,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:51,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193775270] [2022-11-20 11:59:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:51,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:59:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 11:59:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 11:59:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:52,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:52,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193775270] [2022-11-20 11:59:52,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193775270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:52,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:52,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:52,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433608983] [2022-11-20 11:59:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:52,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:52,027 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 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) [2022-11-20 11:59:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:57,519 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2022-11-20 11:59:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:59:57,520 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 [2022-11-20 11:59:57,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:57,616 INFO L225 Difference]: With dead ends: 32469 [2022-11-20 11:59:57,616 INFO L226 Difference]: Without dead ends: 24016 [2022-11-20 11:59:57,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:59:57,662 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5062 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 21555 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:57,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5077 Valid, 21555 Invalid, 2498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:59:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-11-20 12:00:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2022-11-20 12:00:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-11-20 12:00:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2022-11-20 12:00:00,273 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2022-11-20 12:00:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:00,274 INFO L495 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2022-11-20 12:00:00,274 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) [2022-11-20 12:00:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2022-11-20 12:00:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 12:00:00,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:00,287 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] [2022-11-20 12:00:00,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:00:00,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2022-11-20 12:00:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:00,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488647143] [2022-11-20 12:00:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:00:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:00:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:00:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:00,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:00:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 12:00:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:00,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:00,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488647143] [2022-11-20 12:00:00,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488647143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:00,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:00,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:00:00,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598022300] [2022-11-20 12:00:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:00,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:00:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:00:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:00:00,536 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 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) [2022-11-20 12:00:11,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:11,988 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2022-11-20 12:00:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:00:11,989 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 [2022-11-20 12:00:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:12,198 INFO L225 Difference]: With dead ends: 69837 [2022-11-20 12:00:12,199 INFO L226 Difference]: Without dead ends: 53118 [2022-11-20 12:00:12,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:00:12,258 INFO L413 NwaCegarLoop]: 4361 mSDtfsCounter, 5391 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5415 SdHoareTripleChecker+Valid, 21545 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:12,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5415 Valid, 21545 Invalid, 2483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 12:00:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-11-20 12:00:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2022-11-20 12:00:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-11-20 12:00:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2022-11-20 12:00:17,204 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2022-11-20 12:00:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:17,204 INFO L495 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2022-11-20 12:00:17,204 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) [2022-11-20 12:00:17,205 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2022-11-20 12:00:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 12:00:17,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:17,231 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] [2022-11-20 12:00:17,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:00:17,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2022-11-20 12:00:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:17,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285450771] [2022-11-20 12:00:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:17,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:00:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:00:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:00:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:00:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-20 12:00:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:17,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285450771] [2022-11-20 12:00:17,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285450771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:00:17,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:00:17,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:00:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819071304] [2022-11-20 12:00:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:00:17,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:00:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:00:17,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:00:17,451 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 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)