./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.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_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/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_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/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_781e62de-a8eb-4eea-9750-ae50658327a2/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 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 --- 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 20:11:41,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:11:41,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:11:41,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:11:41,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:11:41,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:11:41,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:11:41,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:11:42,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:11:42,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:11:42,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:11:42,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:11:42,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:11:42,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:11:42,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:11:42,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:11:42,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:11:42,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:11:42,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:11:42,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:11:42,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:11:42,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:11:42,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:11:42,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:11:42,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:11:42,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:11:42,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:11:42,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:11:42,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:11:42,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:11:42,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:11:42,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:11:42,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:11:42,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:11:42,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:11:42,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:11:42,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:11:42,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:11:42,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:11:42,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:11:42,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:11:42,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:11:42,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:11:42,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:11:42,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:11:42,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:11:42,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:11:42,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:11:42,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:11:42,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:11:42,089 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:11:42,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:11:42,090 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:11:42,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:11:42,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:11:42,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:11:42,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:11:42,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:11:42,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:11:42,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:11:42,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:11:42,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:11:42,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:11:42,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:11:42,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:11:42,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:11:42,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:11:42,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:11:42,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:11:42,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:11:42,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:11:42,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:11:42,096 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:11:42,096 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:11:42,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:11:42,097 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_781e62de-a8eb-4eea-9750-ae50658327a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96b7f8eccd086f0147c8c722a1929f411803fa8c06f9cbde3c608e38cc4fa9b2 [2022-11-18 20:11:42,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:11:42,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:11:42,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:11:42,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:11:42,396 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:11:42,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2022-11-18 20:11:42,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/data/d54bc72e6/3e8fbf2e9a5c44fda3c2b7227983e27b/FLAG2a66f954f [2022-11-18 20:11:43,574 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:11:43,575 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c [2022-11-18 20:11:43,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/data/d54bc72e6/3e8fbf2e9a5c44fda3c2b7227983e27b/FLAG2a66f954f [2022-11-18 20:11:43,903 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/data/d54bc72e6/3e8fbf2e9a5c44fda3c2b7227983e27b [2022-11-18 20:11:43,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:11:43,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:11:43,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:11:43,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:11:43,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:11:43,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:11:43" (1/1) ... [2022-11-18 20:11:43,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed43e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:43, skipping insertion in model container [2022-11-18 20:11:43,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:11:43" (1/1) ... [2022-11-18 20:11:43,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:11:44,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:11:46,749 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_781e62de-a8eb-4eea-9750-ae50658327a2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2022-11-18 20:11:46,791 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_781e62de-a8eb-4eea-9750-ae50658327a2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2022-11-18 20:11:47,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:11:47,123 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:11:48,351 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_781e62de-a8eb-4eea-9750-ae50658327a2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[375709,375722] [2022-11-18 20:11:48,364 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_781e62de-a8eb-4eea-9750-ae50658327a2/sv-benchmarks/c/combinations/Problem05_label48+token_ring.11.cil-2.c[383339,383352] [2022-11-18 20:11:48,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:11:48,452 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:11:48,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48 WrapperNode [2022-11-18 20:11:48,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:11:48,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:11:48,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:11:48,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:11:48,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:48,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,092 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-11-18 20:11:49,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:11:49,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:11:49,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:11:49,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:11:49,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:11:49,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:11:49,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:11:49,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:11:49,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (1/1) ... [2022-11-18 20:11:49,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:11:49,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:49,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:11:49,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781e62de-a8eb-4eea-9750-ae50658327a2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:11:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:11:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 20:11:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 20:11:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:11:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:11:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 20:11:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 20:11:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 20:11:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 20:11:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 20:11:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 20:11:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 20:11:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 20:11:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:11:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:11:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:11:49,913 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:11:49,915 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:11:59,494 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:11:59,534 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:11:59,535 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-18 20:11:59,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:59 BoogieIcfgContainer [2022-11-18 20:11:59,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:11:59,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:11:59,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:11:59,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:11:59,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:11:43" (1/3) ... [2022-11-18 20:11:59,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47be113d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:59, skipping insertion in model container [2022-11-18 20:11:59,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:11:48" (2/3) ... [2022-11-18 20:11:59,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47be113d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:11:59, skipping insertion in model container [2022-11-18 20:11:59,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:11:59" (3/3) ... [2022-11-18 20:11:59,560 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.11.cil-2.c [2022-11-18 20:11:59,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:11:59,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:11:59,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:11:59,728 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;@5fa4cf9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:11:59,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:11:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 20:11:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:11:59,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:59,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:59,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:59,789 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-11-18 20:11:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:59,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866593322] [2022-11-18 20:11:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:00,539 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 20:12:00,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:00,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866593322] [2022-11-18 20:12:00,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866593322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:00,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:00,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:12:00,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357617780] [2022-11-18 20:12:00,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:00,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:12:00,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:12:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:12:00,603 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:03,384 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-11-18 20:12:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:12:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:03,423 INFO L225 Difference]: With dead ends: 5199 [2022-11-18 20:12:03,423 INFO L226 Difference]: Without dead ends: 2604 [2022-11-18 20:12:03,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:12:03,440 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 957 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 16787 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:03,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 16787 Invalid, 1013 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [54 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:12:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-11-18 20:12:03,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-11-18 20:12:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 20:12:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-11-18 20:12:03,651 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-11-18 20:12:03,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:03,652 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-11-18 20:12:03,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:03,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-11-18 20:12:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:03,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:03,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:12:03,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:03,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-11-18 20:12:03,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:03,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380832551] [2022-11-18 20:12:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:03,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:03,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:04,058 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 20:12:04,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:04,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380832551] [2022-11-18 20:12:04,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380832551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:04,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:04,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:12:04,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987292214] [2022-11-18 20:12:04,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:04,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:12:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:12:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:12:04,063 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:08,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:08,232 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-11-18 20:12:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:12:08,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:08,248 INFO L225 Difference]: With dead ends: 3417 [2022-11-18 20:12:08,248 INFO L226 Difference]: Without dead ends: 3084 [2022-11-18 20:12:08,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:12:08,252 INFO L413 NwaCegarLoop]: 4284 mSDtfsCounter, 5403 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5421 SdHoareTripleChecker+Valid, 17039 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:08,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5421 Valid, 17039 Invalid, 2305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:12:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-11-18 20:12:08,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-11-18 20:12:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-11-18 20:12:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-11-18 20:12:08,407 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-11-18 20:12:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:08,409 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-11-18 20:12:08,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-11-18 20:12:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:08,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:08,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:12:08,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-11-18 20:12:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794400454] [2022-11-18 20:12:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:08,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:08,863 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 20:12:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:08,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794400454] [2022-11-18 20:12:08,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794400454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:08,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:08,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:08,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3839932] [2022-11-18 20:12:08,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:08,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:08,871 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:13,991 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2022-11-18 20:12:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:12:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:14,007 INFO L225 Difference]: With dead ends: 4265 [2022-11-18 20:12:14,007 INFO L226 Difference]: Without dead ends: 3582 [2022-11-18 20:12:14,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:14,012 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 5432 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5450 SdHoareTripleChecker+Valid, 22049 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:14,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5450 Valid, 22049 Invalid, 3388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 20:12:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-11-18 20:12:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2022-11-18 20:12:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-18 20:12:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2022-11-18 20:12:14,190 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2022-11-18 20:12:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:14,191 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2022-11-18 20:12:14,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2022-11-18 20:12:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:14,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:14,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:14,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:12:14,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2022-11-18 20:12:14,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:14,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217582012] [2022-11-18 20:12:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:14,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:14,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:14,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:14,583 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 20:12:14,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:14,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217582012] [2022-11-18 20:12:14,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217582012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:14,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:14,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545912391] [2022-11-18 20:12:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:14,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:14,587 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:19,808 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2022-11-18 20:12:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:12:19,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:19,835 INFO L225 Difference]: With dead ends: 5515 [2022-11-18 20:12:19,835 INFO L226 Difference]: Without dead ends: 4507 [2022-11-18 20:12:19,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:19,842 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5430 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5448 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:19,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5448 Valid, 22047 Invalid, 3386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:12:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-11-18 20:12:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2022-11-18 20:12:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-11-18 20:12:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2022-11-18 20:12:20,227 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2022-11-18 20:12:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:20,229 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2022-11-18 20:12:20,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2022-11-18 20:12:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:20,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:20,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:20,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:12:20,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2022-11-18 20:12:20,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:20,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679526332] [2022-11-18 20:12:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:20,584 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 20:12:20,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:20,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679526332] [2022-11-18 20:12:20,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679526332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:20,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:20,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328662573] [2022-11-18 20:12:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:20,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:20,591 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:25,998 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2022-11-18 20:12:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:12:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:26,028 INFO L225 Difference]: With dead ends: 7918 [2022-11-18 20:12:26,028 INFO L226 Difference]: Without dead ends: 6259 [2022-11-18 20:12:26,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:26,039 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5426 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5444 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:26,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5444 Valid, 22047 Invalid, 3377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-18 20:12:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-11-18 20:12:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2022-11-18 20:12:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-11-18 20:12:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2022-11-18 20:12:26,527 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2022-11-18 20:12:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:26,527 INFO L495 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2022-11-18 20:12:26,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2022-11-18 20:12:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:26,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:26,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:26,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:12:26,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:26,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2022-11-18 20:12:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:26,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679487954] [2022-11-18 20:12:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:26,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:26,875 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 20:12:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:26,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679487954] [2022-11-18 20:12:26,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679487954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:26,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:26,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276989403] [2022-11-18 20:12:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:26,878 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:32,619 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2022-11-18 20:12:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:12:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:32,663 INFO L225 Difference]: With dead ends: 12723 [2022-11-18 20:12:32,663 INFO L226 Difference]: Without dead ends: 9761 [2022-11-18 20:12:32,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:32,675 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5422 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:32,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5440 Valid, 22047 Invalid, 3368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:12:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-11-18 20:12:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2022-11-18 20:12:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-18 20:12:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2022-11-18 20:12:33,561 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2022-11-18 20:12:33,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:33,562 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2022-11-18 20:12:33,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2022-11-18 20:12:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:33,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:33,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:33,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:12:33,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2022-11-18 20:12:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:33,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559583803] [2022-11-18 20:12:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:33,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:33,883 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 20:12:33,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:33,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559583803] [2022-11-18 20:12:33,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559583803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:33,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:33,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44208146] [2022-11-18 20:12:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:33,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:33,886 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:40,585 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2022-11-18 20:12:40,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:12:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:40,652 INFO L225 Difference]: With dead ends: 22332 [2022-11-18 20:12:40,652 INFO L226 Difference]: Without dead ends: 16759 [2022-11-18 20:12:40,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:40,676 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5424 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5442 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:40,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5442 Valid, 22047 Invalid, 3354 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-18 20:12:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2022-11-18 20:12:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2022-11-18 20:12:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-11-18 20:12:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2022-11-18 20:12:42,183 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2022-11-18 20:12:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:42,184 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2022-11-18 20:12:42,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2022-11-18 20:12:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:42,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:42,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:12:42,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2022-11-18 20:12:42,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:42,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592339011] [2022-11-18 20:12:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:42,484 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 20:12:42,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:42,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592339011] [2022-11-18 20:12:42,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592339011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:42,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:42,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650903187] [2022-11-18 20:12:42,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:42,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:42,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:42,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:42,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:42,487 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:47,064 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2022-11-18 20:12:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:12:47,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:47,125 INFO L225 Difference]: With dead ends: 27774 [2022-11-18 20:12:47,126 INFO L226 Difference]: Without dead ends: 16966 [2022-11-18 20:12:47,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:12:47,157 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 5017 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5036 SdHoareTripleChecker+Valid, 20935 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:47,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5036 Valid, 20935 Invalid, 1736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:12:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2022-11-18 20:12:48,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2022-11-18 20:12:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-11-18 20:12:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2022-11-18 20:12:48,859 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2022-11-18 20:12:48,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:48,860 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2022-11-18 20:12:48,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2022-11-18 20:12:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:12:48,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:48,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:12:48,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2022-11-18 20:12:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:48,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417369187] [2022-11-18 20:12:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:12:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:12:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:49,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:12:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:12:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:12:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:49,234 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 20:12:49,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:49,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417369187] [2022-11-18 20:12:49,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417369187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:49,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:49,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:12:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622625815] [2022-11-18 20:12:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:12:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:12:49,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:49,239 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:12:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:57,713 INFO L93 Difference]: Finished difference Result 41484 states and 66747 transitions. [2022-11-18 20:12:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:12:57,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:12:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:57,833 INFO L225 Difference]: With dead ends: 41484 [2022-11-18 20:12:57,833 INFO L226 Difference]: Without dead ends: 30676 [2022-11-18 20:12:57,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:57,873 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5413 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:57,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5431 Valid, 22047 Invalid, 3301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-18 20:12:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2022-11-18 20:13:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 23513. [2022-11-18 20:13:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 21752 states have (on average 1.5849117322545054) internal successors, (34475), 21818 states have internal predecessors, (34475), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-11-18 20:13:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 37878 transitions. [2022-11-18 20:13:00,612 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 37878 transitions. Word has length 167 [2022-11-18 20:13:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:00,613 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 37878 transitions. [2022-11-18 20:13:00,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:13:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 37878 transitions. [2022-11-18 20:13:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:13:00,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:00,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:13:00,628 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2022-11-18 20:13:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751281943] [2022-11-18 20:13:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:13:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:13:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:00,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:13:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:13:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:13:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:00,906 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 20:13:00,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:00,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751281943] [2022-11-18 20:13:00,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751281943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:00,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:00,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:13:00,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925140712] [2022-11-18 20:13:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:00,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:13:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:00,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:13:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:13:00,909 INFO L87 Difference]: Start difference. First operand 23513 states and 37878 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:13:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:13,804 INFO L93 Difference]: Finished difference Result 79923 states and 128881 transitions. [2022-11-18 20:13:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:13:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-18 20:13:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:14,112 INFO L225 Difference]: With dead ends: 79923 [2022-11-18 20:13:14,112 INFO L226 Difference]: Without dead ends: 58550 [2022-11-18 20:13:14,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:13:14,175 INFO L413 NwaCegarLoop]: 4471 mSDtfsCounter, 5412 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 3225 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5430 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:14,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5430 Valid, 22047 Invalid, 3288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3225 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-18 20:13:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2022-11-18 20:13:20,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 44702. [2022-11-18 20:13:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44702 states, 41213 states have (on average 1.5697231456093952) internal successors, (64693), 41343 states have internal predecessors, (64693), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-11-18 20:13:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44702 states to 44702 states and 72178 transitions. [2022-11-18 20:13:20,823 INFO L78 Accepts]: Start accepts. Automaton has 44702 states and 72178 transitions. Word has length 167 [2022-11-18 20:13:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:20,824 INFO L495 AbstractCegarLoop]: Abstraction has 44702 states and 72178 transitions. [2022-11-18 20:13:20,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:13:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 44702 states and 72178 transitions. [2022-11-18 20:13:20,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:13:20,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:20,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:20,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:13:20,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2022-11-18 20:13:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437297075] [2022-11-18 20:13:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:13:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:13:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:13:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:13:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-18 20:13:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:21,147 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 20:13:21,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:21,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437297075] [2022-11-18 20:13:21,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437297075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:21,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:21,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:13:21,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606307146] [2022-11-18 20:13:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:21,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:13:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:13:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:13:21,151 INFO L87 Difference]: Start difference. First operand 44702 states and 72178 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)