./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro --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 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af --- 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-8393723 [2022-11-18 19:45:04,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:45:04,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:45:04,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:45:04,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:45:04,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:45:04,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:45:04,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:45:04,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:45:04,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:45:04,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:45:04,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:45:04,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:45:04,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:45:04,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:45:04,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:45:04,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:45:04,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:45:04,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:45:04,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:45:04,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:45:04,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:45:04,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:45:04,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:45:04,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:45:04,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:45:04,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:45:04,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:45:04,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:45:04,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:45:04,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:45:04,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:45:04,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:45:04,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:45:04,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:45:04,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:45:04,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:45:04,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:45:04,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:45:04,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:45:04,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:45:04,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:45:04,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:45:04,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:45:04,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:45:04,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:45:04,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:45:04,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:45:04,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:45:04,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:45:04,985 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:45:04,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:45:04,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:45:04,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:45:04,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:45:04,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:45:04,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:45:04,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:45:04,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:45:04,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:45:04,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:45:04,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:45:04,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:45:04,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:45:04,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:45:04,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:45:04,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:45:04,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:45:04,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:45:04,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:45:04,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:45:04,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:45:04,990 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:45:04,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:45:04,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:45:04,991 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_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af [2022-11-18 19:45:05,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:45:05,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:45:05,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:45:05,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:45:05,270 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:45:05,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-11-18 19:45:05,352 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/data/5e1d93e0b/015a317eca7141aa8cc69d563d68647f/FLAGd8d68f3ff [2022-11-18 19:45:05,830 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:45:05,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-11-18 19:45:05,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/data/5e1d93e0b/015a317eca7141aa8cc69d563d68647f/FLAGd8d68f3ff [2022-11-18 19:45:06,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/data/5e1d93e0b/015a317eca7141aa8cc69d563d68647f [2022-11-18 19:45:06,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:45:06,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:45:06,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:45:06,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:45:06,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:45:06,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1053290f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06, skipping insertion in model container [2022-11-18 19:45:06,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:45:06,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:45:06,457 WARN L234 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_cf10cbd1-b077-419e-826e-8519787bd867/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2022-11-18 19:45:06,524 WARN L234 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_cf10cbd1-b077-419e-826e-8519787bd867/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2022-11-18 19:45:06,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:45:06,624 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:45:06,644 WARN L234 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_cf10cbd1-b077-419e-826e-8519787bd867/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2022-11-18 19:45:06,688 WARN L234 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_cf10cbd1-b077-419e-826e-8519787bd867/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2022-11-18 19:45:06,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:45:06,807 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:45:06,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06 WrapperNode [2022-11-18 19:45:06,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:45:06,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:45:06,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:45:06,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:45:06,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,891 INFO L138 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 793 [2022-11-18 19:45:06,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:45:06,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:45:06,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:45:06,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:45:06,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:45:06,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:45:06,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:45:06,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:45:06,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (1/1) ... [2022-11-18 19:45:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:45:06,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:06,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:45:07,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf10cbd1-b077-419e-826e-8519787bd867/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:45:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:45:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 19:45:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 19:45:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-18 19:45:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-18 19:45:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-18 19:45:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-18 19:45:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-18 19:45:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-18 19:45:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-18 19:45:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-18 19:45:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-18 19:45:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-18 19:45:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-18 19:45:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-18 19:45:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-18 19:45:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-18 19:45:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-18 19:45:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-18 19:45:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-18 19:45:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-18 19:45:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-18 19:45:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-18 19:45:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:45:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-18 19:45:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-18 19:45:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-18 19:45:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-18 19:45:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:45:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:45:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-18 19:45:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-18 19:45:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-18 19:45:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-18 19:45:07,226 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:45:07,235 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:45:08,031 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-18 19:45:08,032 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-18 19:45:08,097 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:45:08,108 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:45:08,109 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-18 19:45:08,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:45:08 BoogieIcfgContainer [2022-11-18 19:45:08,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:45:08,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:45:08,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:45:08,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:45:08,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:45:06" (1/3) ... [2022-11-18 19:45:08,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddcb59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:45:08, skipping insertion in model container [2022-11-18 19:45:08,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:06" (2/3) ... [2022-11-18 19:45:08,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddcb59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:45:08, skipping insertion in model container [2022-11-18 19:45:08,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:45:08" (3/3) ... [2022-11-18 19:45:08,120 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-11-18 19:45:08,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:45:08,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 19:45:08,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:45:08,213 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;@346e0c0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:45:08,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 19:45:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-18 19:45:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:45:08,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:08,233 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] [2022-11-18 19:45:08,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2022-11-18 19:45:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:08,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560263124] [2022-11-18 19:45:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:08,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:45:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:45:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:45:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:08,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560263124] [2022-11-18 19:45:08,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560263124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:08,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:08,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:45:08,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825844] [2022-11-18 19:45:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:45:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:45:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:45:08,795 INFO L87 Difference]: Start difference. First operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:09,830 INFO L93 Difference]: Finished difference Result 758 states and 1198 transitions. [2022-11-18 19:45:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:45:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:45:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:09,862 INFO L225 Difference]: With dead ends: 758 [2022-11-18 19:45:09,863 INFO L226 Difference]: Without dead ends: 389 [2022-11-18 19:45:09,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:45:09,872 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 600 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:09,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1328 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 19:45:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-18 19:45:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-11-18 19:45:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 317 states have (on average 1.5299684542586751) internal successors, (485), 322 states have internal predecessors, (485), 39 states have call successors, (39), 15 states have call predecessors, (39), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-18 19:45:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 559 transitions. [2022-11-18 19:45:09,981 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 559 transitions. Word has length 65 [2022-11-18 19:45:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:09,982 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 559 transitions. [2022-11-18 19:45:09,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 559 transitions. [2022-11-18 19:45:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:45:09,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:09,986 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] [2022-11-18 19:45:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:45:09,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1810756380, now seen corresponding path program 1 times [2022-11-18 19:45:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:09,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973384942] [2022-11-18 19:45:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:09,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:45:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:45:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:45:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:10,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:10,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973384942] [2022-11-18 19:45:10,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973384942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:10,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:10,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:45:10,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225561558] [2022-11-18 19:45:10,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:10,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:45:10,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:45:10,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:45:10,286 INFO L87 Difference]: Start difference. First operand 371 states and 559 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:11,476 INFO L93 Difference]: Finished difference Result 626 states and 928 transitions. [2022-11-18 19:45:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:45:11,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:45:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:11,480 INFO L225 Difference]: With dead ends: 626 [2022-11-18 19:45:11,481 INFO L226 Difference]: Without dead ends: 522 [2022-11-18 19:45:11,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:45:11,483 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 980 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:11,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1386 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:45:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-18 19:45:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 483. [2022-11-18 19:45:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 407 states have (on average 1.5012285012285012) internal successors, (611), 414 states have internal predecessors, (611), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-11-18 19:45:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2022-11-18 19:45:11,537 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 65 [2022-11-18 19:45:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:11,538 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2022-11-18 19:45:11,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2022-11-18 19:45:11,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:45:11,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:11,541 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] [2022-11-18 19:45:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:45:11,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash -805322276, now seen corresponding path program 1 times [2022-11-18 19:45:11,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:11,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742114705] [2022-11-18 19:45:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:11,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:45:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:45:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:45:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:11,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742114705] [2022-11-18 19:45:11,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742114705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:11,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:11,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:45:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515931606] [2022-11-18 19:45:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:45:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:45:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:45:11,801 INFO L87 Difference]: Start difference. First operand 483 states and 716 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:13,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:13,339 INFO L93 Difference]: Finished difference Result 880 states and 1281 transitions. [2022-11-18 19:45:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:45:13,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 19:45:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:13,350 INFO L225 Difference]: With dead ends: 880 [2022-11-18 19:45:13,350 INFO L226 Difference]: Without dead ends: 671 [2022-11-18 19:45:13,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:45:13,360 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1076 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:13,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2023 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:45:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-18 19:45:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 595. [2022-11-18 19:45:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 497 states have (on average 1.4808853118712273) internal successors, (736), 506 states have internal predecessors, (736), 65 states have call successors, (65), 29 states have call predecessors, (65), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-11-18 19:45:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 875 transitions. [2022-11-18 19:45:13,466 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 875 transitions. Word has length 65 [2022-11-18 19:45:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:13,467 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 875 transitions. [2022-11-18 19:45:13,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 875 transitions. [2022-11-18 19:45:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 19:45:13,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:13,471 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] [2022-11-18 19:45:13,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:45:13,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1461058910, now seen corresponding path program 1 times [2022-11-18 19:45:13,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:13,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968079534] [2022-11-18 19:45:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 19:45:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 19:45:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 19:45:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:13,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968079534] [2022-11-18 19:45:13,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968079534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:13,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:13,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:45:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068128320] [2022-11-18 19:45:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:45:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:45:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:45:13,680 INFO L87 Difference]: Start difference. First operand 595 states and 875 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:45:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:15,989 INFO L93 Difference]: Finished difference Result 2141 states and 3072 transitions. [2022-11-18 19:45:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:45:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-18 19:45:15,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:16,002 INFO L225 Difference]: With dead ends: 2141 [2022-11-18 19:45:16,002 INFO L226 Difference]: Without dead ends: 1808 [2022-11-18 19:45:16,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:45:16,015 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 3397 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3416 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:16,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3416 Valid, 2011 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 19:45:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-18 19:45:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1648. [2022-11-18 19:45:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1345 states have (on average 1.3992565055762083) internal successors, (1882), 1369 states have internal predecessors, (1882), 175 states have call successors, (175), 112 states have call predecessors, (175), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-11-18 19:45:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2264 transitions. [2022-11-18 19:45:16,192 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2264 transitions. Word has length 65 [2022-11-18 19:45:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:16,193 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2264 transitions. [2022-11-18 19:45:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-18 19:45:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2264 transitions. [2022-11-18 19:45:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:45:16,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:16,195 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] [2022-11-18 19:45:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:45:16,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1639333971, now seen corresponding path program 1 times [2022-11-18 19:45:16,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:16,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939446314] [2022-11-18 19:45:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:45:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:45:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:45:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:16,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939446314] [2022-11-18 19:45:16,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939446314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:16,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:16,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:45:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033431824] [2022-11-18 19:45:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:16,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:45:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:16,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:45:16,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:45:16,376 INFO L87 Difference]: Start difference. First operand 1648 states and 2264 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:17,730 INFO L93 Difference]: Finished difference Result 3264 states and 4484 transitions. [2022-11-18 19:45:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:45:17,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 19:45:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:17,740 INFO L225 Difference]: With dead ends: 3264 [2022-11-18 19:45:17,740 INFO L226 Difference]: Without dead ends: 1884 [2022-11-18 19:45:17,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:45:17,746 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 475 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:17,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 2255 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:45:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-11-18 19:45:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1718. [2022-11-18 19:45:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1401 states have (on average 1.3832976445396146) internal successors, (1938), 1425 states have internal predecessors, (1938), 175 states have call successors, (175), 112 states have call predecessors, (175), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-11-18 19:45:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2334 transitions. [2022-11-18 19:45:17,914 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2334 transitions. Word has length 66 [2022-11-18 19:45:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:17,915 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2334 transitions. [2022-11-18 19:45:17,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2334 transitions. [2022-11-18 19:45:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:45:17,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:17,919 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] [2022-11-18 19:45:17,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:45:17,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:17,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash 253130577, now seen corresponding path program 1 times [2022-11-18 19:45:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:17,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068673824] [2022-11-18 19:45:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:45:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:45:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:45:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068673824] [2022-11-18 19:45:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068673824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:18,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:18,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:45:18,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616886177] [2022-11-18 19:45:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:18,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:45:18,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:45:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:45:18,199 INFO L87 Difference]: Start difference. First operand 1718 states and 2334 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:19,486 INFO L93 Difference]: Finished difference Result 3332 states and 4507 transitions. [2022-11-18 19:45:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:45:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 19:45:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:19,496 INFO L225 Difference]: With dead ends: 3332 [2022-11-18 19:45:19,496 INFO L226 Difference]: Without dead ends: 1882 [2022-11-18 19:45:19,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:45:19,501 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 475 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:19,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 2253 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:45:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2022-11-18 19:45:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1758. [2022-11-18 19:45:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1433 states have (on average 1.3705512909979065) internal successors, (1964), 1457 states have internal predecessors, (1964), 175 states have call successors, (175), 112 states have call predecessors, (175), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-11-18 19:45:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2368 transitions. [2022-11-18 19:45:19,671 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2368 transitions. Word has length 66 [2022-11-18 19:45:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:19,671 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2368 transitions. [2022-11-18 19:45:19,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 19:45:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2368 transitions. [2022-11-18 19:45:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 19:45:19,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:19,673 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] [2022-11-18 19:45:19,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:45:19,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash -776228721, now seen corresponding path program 1 times [2022-11-18 19:45:19,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939528958] [2022-11-18 19:45:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:45:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 19:45:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 19:45:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:19,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:19,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939528958] [2022-11-18 19:45:19,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939528958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:19,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:19,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 19:45:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128221049] [2022-11-18 19:45:19,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:19,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:45:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:45:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:45:19,812 INFO L87 Difference]: Start difference. First operand 1758 states and 2368 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 19:45:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:22,364 INFO L93 Difference]: Finished difference Result 5492 states and 7470 transitions. [2022-11-18 19:45:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:45:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-18 19:45:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:22,375 INFO L225 Difference]: With dead ends: 5492 [2022-11-18 19:45:22,376 INFO L226 Difference]: Without dead ends: 2155 [2022-11-18 19:45:22,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:45:22,384 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 3485 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3503 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:22,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3503 Valid, 2057 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 19:45:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2022-11-18 19:45:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1959. [2022-11-18 19:45:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1564 states have (on average 1.3312020460358056) internal successors, (2082), 1590 states have internal predecessors, (2082), 215 states have call successors, (215), 140 states have call predecessors, (215), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-11-18 19:45:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2570 transitions. [2022-11-18 19:45:22,568 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2570 transitions. Word has length 66 [2022-11-18 19:45:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:22,569 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2570 transitions. [2022-11-18 19:45:22,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 19:45:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2570 transitions. [2022-11-18 19:45:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 19:45:22,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:22,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:22,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:45:22,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:22,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1088286627, now seen corresponding path program 1 times [2022-11-18 19:45:22,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:22,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511233980] [2022-11-18 19:45:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:22,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:45:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:45:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:45:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 19:45:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 19:45:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:22,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511233980] [2022-11-18 19:45:22,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511233980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:22,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:22,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:45:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904162087] [2022-11-18 19:45:22,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:22,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:45:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:22,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:45:22,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:45:22,769 INFO L87 Difference]: Start difference. First operand 1959 states and 2570 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:24,210 INFO L93 Difference]: Finished difference Result 3496 states and 4558 transitions. [2022-11-18 19:45:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:45:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-18 19:45:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:24,225 INFO L225 Difference]: With dead ends: 3496 [2022-11-18 19:45:24,225 INFO L226 Difference]: Without dead ends: 2043 [2022-11-18 19:45:24,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:45:24,229 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1098 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:24,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1720 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:45:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-11-18 19:45:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1738. [2022-11-18 19:45:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1396 states have (on average 1.3330945558739256) internal successors, (1861), 1417 states have internal predecessors, (1861), 187 states have call successors, (187), 121 states have call predecessors, (187), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-18 19:45:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2281 transitions. [2022-11-18 19:45:24,366 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2281 transitions. Word has length 91 [2022-11-18 19:45:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:24,367 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2281 transitions. [2022-11-18 19:45:24,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 19:45:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2281 transitions. [2022-11-18 19:45:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-18 19:45:24,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:24,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:24,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:45:24,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518623, now seen corresponding path program 1 times [2022-11-18 19:45:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:24,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108789603] [2022-11-18 19:45:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:45:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:45:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:45:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 19:45:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:45:24,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:24,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108789603] [2022-11-18 19:45:24,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108789603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:24,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:24,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:24,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550524562] [2022-11-18 19:45:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:24,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:24,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:24,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:24,490 INFO L87 Difference]: Start difference. First operand 1738 states and 2281 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:45:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:25,208 INFO L93 Difference]: Finished difference Result 3314 states and 4341 transitions. [2022-11-18 19:45:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:45:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-18 19:45:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:25,224 INFO L225 Difference]: With dead ends: 3314 [2022-11-18 19:45:25,225 INFO L226 Difference]: Without dead ends: 1845 [2022-11-18 19:45:25,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:45:25,231 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1163 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:25,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1026 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:45:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2022-11-18 19:45:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1738. [2022-11-18 19:45:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1396 states have (on average 1.3073065902578798) internal successors, (1825), 1417 states have internal predecessors, (1825), 187 states have call successors, (187), 121 states have call predecessors, (187), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-18 19:45:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2245 transitions. [2022-11-18 19:45:25,388 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2245 transitions. Word has length 91 [2022-11-18 19:45:25,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:25,390 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2245 transitions. [2022-11-18 19:45:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:45:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2245 transitions. [2022-11-18 19:45:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 19:45:25,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:25,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:45:25,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:45:25,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash -512293133, now seen corresponding path program 1 times [2022-11-18 19:45:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:25,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192222540] [2022-11-18 19:45:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 19:45:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 19:45:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 19:45:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 19:45:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 19:45:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 19:45:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:45:25,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:25,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192222540] [2022-11-18 19:45:25,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192222540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:25,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:25,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:45:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503138564] [2022-11-18 19:45:25,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:25,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:45:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:45:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:45:25,587 INFO L87 Difference]: Start difference. First operand 1738 states and 2245 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:45:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:27,390 INFO L93 Difference]: Finished difference Result 4164 states and 5350 transitions. [2022-11-18 19:45:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:45:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-11-18 19:45:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:27,402 INFO L225 Difference]: With dead ends: 4164 [2022-11-18 19:45:27,402 INFO L226 Difference]: Without dead ends: 2540 [2022-11-18 19:45:27,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:45:27,408 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1724 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:27,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 1782 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:45:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-11-18 19:45:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2345. [2022-11-18 19:45:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1849 states have (on average 1.2731206057328286) internal successors, (2354), 1885 states have internal predecessors, (2354), 264 states have call successors, (264), 169 states have call predecessors, (264), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-18 19:45:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2984 transitions. [2022-11-18 19:45:27,623 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2984 transitions. Word has length 92 [2022-11-18 19:45:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:27,624 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 2984 transitions. [2022-11-18 19:45:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 19:45:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2984 transitions. [2022-11-18 19:45:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:27,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:27,626 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] [2022-11-18 19:45:27,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:45:27,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:27,627 INFO L85 PathProgramCache]: Analyzing trace with hash 959549796, now seen corresponding path program 1 times [2022-11-18 19:45:27,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:27,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462354619] [2022-11-18 19:45:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:27,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:27,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:27,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462354619] [2022-11-18 19:45:27,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462354619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:27,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:27,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:45:27,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245143580] [2022-11-18 19:45:27,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:27,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:45:27,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:27,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:45:27,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:45:27,744 INFO L87 Difference]: Start difference. First operand 2345 states and 2984 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:29,494 INFO L93 Difference]: Finished difference Result 2685 states and 3528 transitions. [2022-11-18 19:45:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:45:29,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:29,505 INFO L225 Difference]: With dead ends: 2685 [2022-11-18 19:45:29,506 INFO L226 Difference]: Without dead ends: 2432 [2022-11-18 19:45:29,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:45:29,509 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 783 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:29,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 801 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:45:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-11-18 19:45:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2345. [2022-11-18 19:45:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1849 states have (on average 1.2725797728501893) internal successors, (2353), 1885 states have internal predecessors, (2353), 264 states have call successors, (264), 169 states have call predecessors, (264), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-18 19:45:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2983 transitions. [2022-11-18 19:45:29,889 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2983 transitions. Word has length 124 [2022-11-18 19:45:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:29,889 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 2983 transitions. [2022-11-18 19:45:29,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2983 transitions. [2022-11-18 19:45:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:29,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:29,892 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] [2022-11-18 19:45:29,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:45:29,893 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:29,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:29,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1292192934, now seen corresponding path program 1 times [2022-11-18 19:45:29,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:29,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195890962] [2022-11-18 19:45:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:29,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:30,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195890962] [2022-11-18 19:45:30,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195890962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:30,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:30,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:45:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934974960] [2022-11-18 19:45:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:45:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:45:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:45:30,055 INFO L87 Difference]: Start difference. First operand 2345 states and 2983 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:32,878 INFO L93 Difference]: Finished difference Result 3015 states and 4054 transitions. [2022-11-18 19:45:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:45:32,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:32,892 INFO L225 Difference]: With dead ends: 3015 [2022-11-18 19:45:32,892 INFO L226 Difference]: Without dead ends: 2771 [2022-11-18 19:45:32,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:45:32,895 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1240 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:32,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1170 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:45:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2022-11-18 19:45:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2596. [2022-11-18 19:45:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2077 states have (on average 1.306692344727973) internal successors, (2714), 2114 states have internal predecessors, (2714), 280 states have call successors, (280), 175 states have call predecessors, (280), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-11-18 19:45:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3379 transitions. [2022-11-18 19:45:33,282 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3379 transitions. Word has length 124 [2022-11-18 19:45:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:33,283 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3379 transitions. [2022-11-18 19:45:33,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3379 transitions. [2022-11-18 19:45:33,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:33,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:33,286 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] [2022-11-18 19:45:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:45:33,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 274544546, now seen corresponding path program 1 times [2022-11-18 19:45:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:33,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576101795] [2022-11-18 19:45:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:33,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:33,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576101795] [2022-11-18 19:45:33,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576101795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:33,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:33,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645876168] [2022-11-18 19:45:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:33,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:33,525 INFO L87 Difference]: Start difference. First operand 2596 states and 3379 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:36,805 INFO L93 Difference]: Finished difference Result 3613 states and 5003 transitions. [2022-11-18 19:45:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:45:36,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:36,821 INFO L225 Difference]: With dead ends: 3613 [2022-11-18 19:45:36,821 INFO L226 Difference]: Without dead ends: 3118 [2022-11-18 19:45:36,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:45:36,824 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1251 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:36,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2022 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 19:45:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2022-11-18 19:45:37,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2830. [2022-11-18 19:45:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2288 states have (on average 1.3291083916083917) internal successors, (3041), 2326 states have internal predecessors, (3041), 296 states have call successors, (296), 181 states have call predecessors, (296), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-11-18 19:45:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3740 transitions. [2022-11-18 19:45:37,335 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3740 transitions. Word has length 124 [2022-11-18 19:45:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:37,335 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 3740 transitions. [2022-11-18 19:45:37,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3740 transitions. [2022-11-18 19:45:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:37,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:37,339 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] [2022-11-18 19:45:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:45:37,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 392986020, now seen corresponding path program 1 times [2022-11-18 19:45:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:37,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349633242] [2022-11-18 19:45:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:37,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:37,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349633242] [2022-11-18 19:45:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349633242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:37,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:37,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778654561] [2022-11-18 19:45:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:37,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:37,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:37,577 INFO L87 Difference]: Start difference. First operand 2830 states and 3740 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:40,874 INFO L93 Difference]: Finished difference Result 4494 states and 6392 transitions. [2022-11-18 19:45:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:45:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:40,894 INFO L225 Difference]: With dead ends: 4494 [2022-11-18 19:45:40,894 INFO L226 Difference]: Without dead ends: 3765 [2022-11-18 19:45:40,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:45:40,899 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1249 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:40,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2020 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 19:45:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-11-18 19:45:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3299. [2022-11-18 19:45:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2711 states have (on average 1.3633345628919218) internal successors, (3696), 2751 states have internal predecessors, (3696), 328 states have call successors, (328), 193 states have call predecessors, (328), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-11-18 19:45:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4467 transitions. [2022-11-18 19:45:41,363 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4467 transitions. Word has length 124 [2022-11-18 19:45:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:41,364 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 4467 transitions. [2022-11-18 19:45:41,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4467 transitions. [2022-11-18 19:45:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:41,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:41,367 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] [2022-11-18 19:45:41,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:45:41,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1782280034, now seen corresponding path program 1 times [2022-11-18 19:45:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153026285] [2022-11-18 19:45:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:41,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:41,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153026285] [2022-11-18 19:45:41,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153026285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:41,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:41,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138991090] [2022-11-18 19:45:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:41,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:41,562 INFO L87 Difference]: Start difference. First operand 3299 states and 4467 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:44,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:44,857 INFO L93 Difference]: Finished difference Result 6191 states and 9055 transitions. [2022-11-18 19:45:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:45:44,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:44,878 INFO L225 Difference]: With dead ends: 6191 [2022-11-18 19:45:44,879 INFO L226 Difference]: Without dead ends: 4993 [2022-11-18 19:45:44,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:45:44,885 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1330 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:44,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1439 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:45:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-11-18 19:45:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4238. [2022-11-18 19:45:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.4069702079820123) internal successors, (5006), 3602 states have internal predecessors, (5006), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-18 19:45:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5927 transitions. [2022-11-18 19:45:45,452 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5927 transitions. Word has length 124 [2022-11-18 19:45:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:45,452 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5927 transitions. [2022-11-18 19:45:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5927 transitions. [2022-11-18 19:45:45,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:45,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:45,460 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] [2022-11-18 19:45:45,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:45:45,460 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash -251114012, now seen corresponding path program 1 times [2022-11-18 19:45:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:45,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893027838] [2022-11-18 19:45:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:45,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:45,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:45,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:45,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893027838] [2022-11-18 19:45:45,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893027838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:45,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:45,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54748656] [2022-11-18 19:45:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:45,716 INFO L87 Difference]: Start difference. First operand 4238 states and 5927 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:48,121 INFO L93 Difference]: Finished difference Result 7133 states and 10548 transitions. [2022-11-18 19:45:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:45:48,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:48,138 INFO L225 Difference]: With dead ends: 7133 [2022-11-18 19:45:48,138 INFO L226 Difference]: Without dead ends: 4996 [2022-11-18 19:45:48,146 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 [2022-11-18 19:45:48,146 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 982 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:48,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1170 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 19:45:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2022-11-18 19:45:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 4238. [2022-11-18 19:45:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.404440697020798) internal successors, (4997), 3602 states have internal predecessors, (4997), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-18 19:45:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5918 transitions. [2022-11-18 19:45:48,693 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5918 transitions. Word has length 124 [2022-11-18 19:45:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:48,694 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5918 transitions. [2022-11-18 19:45:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5918 transitions. [2022-11-18 19:45:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:48,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:48,697 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] [2022-11-18 19:45:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:45:48,698 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1558256410, now seen corresponding path program 1 times [2022-11-18 19:45:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:48,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415283122] [2022-11-18 19:45:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:48,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:48,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415283122] [2022-11-18 19:45:48,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415283122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:48,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:48,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:48,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583353801] [2022-11-18 19:45:48,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:48,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:48,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:48,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:48,866 INFO L87 Difference]: Start difference. First operand 4238 states and 5918 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:50,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:50,883 INFO L93 Difference]: Finished difference Result 7123 states and 10501 transitions. [2022-11-18 19:45:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:45:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:50,899 INFO L225 Difference]: With dead ends: 7123 [2022-11-18 19:45:50,899 INFO L226 Difference]: Without dead ends: 4986 [2022-11-18 19:45:50,905 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 [2022-11-18 19:45:50,906 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1142 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:50,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 972 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:45:50,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2022-11-18 19:45:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4238. [2022-11-18 19:45:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.401911186059584) internal successors, (4988), 3602 states have internal predecessors, (4988), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-18 19:45:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5909 transitions. [2022-11-18 19:45:51,373 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5909 transitions. Word has length 124 [2022-11-18 19:45:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:51,374 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5909 transitions. [2022-11-18 19:45:51,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5909 transitions. [2022-11-18 19:45:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:51,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:51,379 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] [2022-11-18 19:45:51,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:45:51,379 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash 339240356, now seen corresponding path program 1 times [2022-11-18 19:45:51,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635279712] [2022-11-18 19:45:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:51,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:51,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635279712] [2022-11-18 19:45:51,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635279712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:51,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:51,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897873032] [2022-11-18 19:45:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:51,588 INFO L87 Difference]: Start difference. First operand 4238 states and 5909 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:53,831 INFO L93 Difference]: Finished difference Result 7113 states and 10454 transitions. [2022-11-18 19:45:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:45:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:53,845 INFO L225 Difference]: With dead ends: 7113 [2022-11-18 19:45:53,845 INFO L226 Difference]: Without dead ends: 4976 [2022-11-18 19:45:53,851 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 [2022-11-18 19:45:53,851 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 978 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:53,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1170 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:45:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2022-11-18 19:45:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4238. [2022-11-18 19:45:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.3993816750983699) internal successors, (4979), 3602 states have internal predecessors, (4979), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-18 19:45:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5900 transitions. [2022-11-18 19:45:54,421 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5900 transitions. Word has length 124 [2022-11-18 19:45:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:45:54,421 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5900 transitions. [2022-11-18 19:45:54,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5900 transitions. [2022-11-18 19:45:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:45:54,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:45:54,425 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] [2022-11-18 19:45:54,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:45:54,425 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:45:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:45:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1370281254, now seen corresponding path program 1 times [2022-11-18 19:45:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:45:54,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554632667] [2022-11-18 19:45:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:45:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:45:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:45:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:45:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:45:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:45:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:45:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:45:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:45:54,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:45:54,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554632667] [2022-11-18 19:45:54,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554632667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:45:54,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:45:54,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:45:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783226115] [2022-11-18 19:45:54,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:45:54,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:45:54,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:45:54,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:45:54,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:45:54,611 INFO L87 Difference]: Start difference. First operand 4238 states and 5900 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:45:59,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:45:59,156 INFO L93 Difference]: Finished difference Result 10403 states and 15491 transitions. [2022-11-18 19:45:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:45:59,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:45:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:45:59,182 INFO L225 Difference]: With dead ends: 10403 [2022-11-18 19:45:59,182 INFO L226 Difference]: Without dead ends: 8266 [2022-11-18 19:45:59,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:45:59,190 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1299 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:45:59,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2010 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 19:45:59,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2022-11-18 19:46:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 6133. [2022-11-18 19:46:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 5277 states have (on average 1.4426757627439832) internal successors, (7613), 5329 states have internal predecessors, (7613), 512 states have call successors, (512), 265 states have call predecessors, (512), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-11-18 19:46:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 8836 transitions. [2022-11-18 19:46:00,090 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 8836 transitions. Word has length 124 [2022-11-18 19:46:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:00,090 INFO L495 AbstractCegarLoop]: Abstraction has 6133 states and 8836 transitions. [2022-11-18 19:46:00,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 8836 transitions. [2022-11-18 19:46:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:46:00,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:00,095 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] [2022-11-18 19:46:00,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:46:00,096 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash -536122012, now seen corresponding path program 1 times [2022-11-18 19:46:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:00,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966664267] [2022-11-18 19:46:00,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:00,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:46:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:46:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:46:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:46:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:00,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966664267] [2022-11-18 19:46:00,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966664267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:00,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:00,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:00,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017355842] [2022-11-18 19:46:00,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:00,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:00,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:00,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:00,276 INFO L87 Difference]: Start difference. First operand 6133 states and 8836 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:05,558 INFO L93 Difference]: Finished difference Result 17788 states and 27001 transitions. [2022-11-18 19:46:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:46:05,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:46:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:05,612 INFO L225 Difference]: With dead ends: 17788 [2022-11-18 19:46:05,612 INFO L226 Difference]: Without dead ends: 13756 [2022-11-18 19:46:05,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:46:05,628 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1476 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:05,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 2006 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:46:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2022-11-18 19:46:06,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 9746. [2022-11-18 19:46:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9746 states, 8546 states have (on average 1.472384741399485) internal successors, (12583), 8614 states have internal predecessors, (12583), 744 states have call successors, (744), 361 states have call predecessors, (744), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-11-18 19:46:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9746 states to 9746 states and 14448 transitions. [2022-11-18 19:46:07,019 INFO L78 Accepts]: Start accepts. Automaton has 9746 states and 14448 transitions. Word has length 124 [2022-11-18 19:46:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:07,019 INFO L495 AbstractCegarLoop]: Abstraction has 9746 states and 14448 transitions. [2022-11-18 19:46:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9746 states and 14448 transitions. [2022-11-18 19:46:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:46:07,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:07,025 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] [2022-11-18 19:46:07,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:46:07,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1064949094, now seen corresponding path program 1 times [2022-11-18 19:46:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510795372] [2022-11-18 19:46:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:07,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:46:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:46:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:46:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:46:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:07,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:07,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510795372] [2022-11-18 19:46:07,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510795372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:07,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:07,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388604542] [2022-11-18 19:46:07,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:07,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:07,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:07,231 INFO L87 Difference]: Start difference. First operand 9746 states and 14448 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:14,101 INFO L93 Difference]: Finished difference Result 31775 states and 48871 transitions. [2022-11-18 19:46:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:46:14,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:46:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:14,182 INFO L225 Difference]: With dead ends: 31775 [2022-11-18 19:46:14,182 INFO L226 Difference]: Without dead ends: 24130 [2022-11-18 19:46:14,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:46:14,205 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1277 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:14,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2010 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:46:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24130 states. [2022-11-18 19:46:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24130 to 17115. [2022-11-18 19:46:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17115 states, 15243 states have (on average 1.4974086465918783) internal successors, (22825), 15343 states have internal predecessors, (22825), 1192 states have call successors, (1192), 553 states have call predecessors, (1192), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-11-18 19:46:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17115 states to 17115 states and 26104 transitions. [2022-11-18 19:46:16,715 INFO L78 Accepts]: Start accepts. Automaton has 17115 states and 26104 transitions. Word has length 124 [2022-11-18 19:46:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:16,716 INFO L495 AbstractCegarLoop]: Abstraction has 17115 states and 26104 transitions. [2022-11-18 19:46:16,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 17115 states and 26104 transitions. [2022-11-18 19:46:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:46:16,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:16,729 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] [2022-11-18 19:46:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:46:16,730 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash 8217892, now seen corresponding path program 1 times [2022-11-18 19:46:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:16,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204575029] [2022-11-18 19:46:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:16,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:46:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:46:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:46:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:46:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:16,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:16,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204575029] [2022-11-18 19:46:16,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204575029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:16,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:16,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548695968] [2022-11-18 19:46:16,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:16,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:16,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:16,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:16,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:16,955 INFO L87 Difference]: Start difference. First operand 17115 states and 26104 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:27,314 INFO L93 Difference]: Finished difference Result 59606 states and 93149 transitions. [2022-11-18 19:46:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:46:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:46:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:27,460 INFO L225 Difference]: With dead ends: 59606 [2022-11-18 19:46:27,460 INFO L226 Difference]: Without dead ends: 44592 [2022-11-18 19:46:27,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:46:27,503 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1467 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:27,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1435 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:46:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44592 states. [2022-11-18 19:46:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44592 to 31820. [2022-11-18 19:46:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 28636 states have (on average 1.5134446151697165) internal successors, (43339), 28800 states have internal predecessors, (43339), 2056 states have call successors, (2056), 937 states have call predecessors, (2056), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-18 19:46:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 49868 transitions. [2022-11-18 19:46:32,392 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 49868 transitions. Word has length 124 [2022-11-18 19:46:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:32,393 INFO L495 AbstractCegarLoop]: Abstraction has 31820 states and 49868 transitions. [2022-11-18 19:46:32,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 49868 transitions. [2022-11-18 19:46:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:46:32,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:32,422 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] [2022-11-18 19:46:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:46:32,423 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1359603110, now seen corresponding path program 1 times [2022-11-18 19:46:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:32,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191542208] [2022-11-18 19:46:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:46:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:46:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:46:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:46:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:32,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191542208] [2022-11-18 19:46:32,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191542208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:32,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:32,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:32,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383211834] [2022-11-18 19:46:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:32,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:32,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:32,739 INFO L87 Difference]: Start difference. First operand 31820 states and 49868 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:40,809 INFO L93 Difference]: Finished difference Result 69865 states and 112203 transitions. [2022-11-18 19:46:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-18 19:46:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:40,909 INFO L225 Difference]: With dead ends: 69865 [2022-11-18 19:46:40,910 INFO L226 Difference]: Without dead ends: 40146 [2022-11-18 19:46:40,960 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 [2022-11-18 19:46:40,960 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 982 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:40,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1168 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 19:46:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40146 states. [2022-11-18 19:46:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40146 to 31820. [2022-11-18 19:46:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 28636 states have (on average 1.5089397960609023) internal successors, (43210), 28800 states have internal predecessors, (43210), 2056 states have call successors, (2056), 937 states have call predecessors, (2056), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-18 19:46:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 49739 transitions. [2022-11-18 19:46:46,025 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 49739 transitions. Word has length 124 [2022-11-18 19:46:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:46,025 INFO L495 AbstractCegarLoop]: Abstraction has 31820 states and 49739 transitions. [2022-11-18 19:46:46,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:46:46,025 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 49739 transitions. [2022-11-18 19:46:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 19:46:46,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:46,041 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] [2022-11-18 19:46:46,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:46:46,042 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:46:46,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash 476094120, now seen corresponding path program 1 times [2022-11-18 19:46:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:46,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900153206] [2022-11-18 19:46:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 19:46:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 19:46:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 19:46:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 19:46:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 19:46:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:46,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900153206] [2022-11-18 19:46:46,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900153206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:46,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:46,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:46:46,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473316814] [2022-11-18 19:46:46,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:46,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:46:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:46:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:46:46,210 INFO L87 Difference]: Start difference. First operand 31820 states and 49739 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)