./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS --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 0eb0a93133a0d165b4e13ef7269be4b8c3f0f81976a167102da919b09b6c6616 --- 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-4e7fbc6 [2022-11-23 03:41:02,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:41:02,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:41:03,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:41:03,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:41:03,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:41:03,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:41:03,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:41:03,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:41:03,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:41:03,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:41:03,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:41:03,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:41:03,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:41:03,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:41:03,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:41:03,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:41:03,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:41:03,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:41:03,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:41:03,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:41:03,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:41:03,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:41:03,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:41:03,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:41:03,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:41:03,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:41:03,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:41:03,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:41:03,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:41:03,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:41:03,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:41:03,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:41:03,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:41:03,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:41:03,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:41:03,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:41:03,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:41:03,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:41:03,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:41:03,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:41:03,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:41:03,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:41:03,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:41:03,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:41:03,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:41:03,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:41:03,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:41:03,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:41:03,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:41:03,144 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:41:03,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:41:03,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:41:03,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:41:03,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:41:03,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:41:03,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:41:03,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:41:03,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:41:03,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:41:03,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:41:03,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:41:03,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:41:03,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:41:03,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:41:03,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:41:03,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:41:03,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:41:03,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:41:03,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:41:03,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:41:03,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:41:03,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:41:03,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:41:03,151 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:41:03,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:41:03,151 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eb0a93133a0d165b4e13ef7269be4b8c3f0f81976a167102da919b09b6c6616 [2022-11-23 03:41:03,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:41:03,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:41:03,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:41:03,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:41:03,477 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:41:03,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/product-lines/email_spec3_product19.cil.c [2022-11-23 03:41:06,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:41:06,869 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:41:06,871 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/sv-benchmarks/c/product-lines/email_spec3_product19.cil.c [2022-11-23 03:41:06,903 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/data/93b3917d4/1ef90726466c4aec9fd3be2ec7b1cc24/FLAG5e57b1799 [2022-11-23 03:41:06,924 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/data/93b3917d4/1ef90726466c4aec9fd3be2ec7b1cc24 [2022-11-23 03:41:06,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:41:06,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:41:06,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:41:06,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:41:06,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:41:06,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:06" (1/1) ... [2022-11-23 03:41:06,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4923b267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:06, skipping insertion in model container [2022-11-23 03:41:06,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:41:06" (1/1) ... [2022-11-23 03:41:06,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:41:07,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:41:07,275 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/sv-benchmarks/c/product-lines/email_spec3_product19.cil.c[8336,8349] [2022-11-23 03:41:07,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:41:07,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:41:07,580 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/sv-benchmarks/c/product-lines/email_spec3_product19.cil.c[8336,8349] [2022-11-23 03:41:07,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:41:07,796 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:41:07,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07 WrapperNode [2022-11-23 03:41:07,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:41:07,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:41:07,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:41:07,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:41:07,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:07,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:07,946 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 970 [2022-11-23 03:41:07,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:41:07,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:41:07,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:41:07,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:41:07,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:07,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:07,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:07,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:08,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:08,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:08,035 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:08,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:08,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:41:08,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:41:08,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:41:08,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:41:08,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (1/1) ... [2022-11-23 03:41:08,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:41:08,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:08,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:41:08,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:41:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 03:41:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 03:41:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 03:41:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 03:41:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 03:41:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 03:41:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 03:41:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 03:41:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 03:41:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 03:41:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 03:41:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 03:41:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 03:41:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 03:41:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 03:41:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 03:41:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 03:41:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:41:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 03:41:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 03:41:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 03:41:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 03:41:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 03:41:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 03:41:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 03:41:08,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 03:41:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 03:41:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 03:41:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 03:41:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 03:41:08,164 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 03:41:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 03:41:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 03:41:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 03:41:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 03:41:08,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 03:41:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 03:41:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 03:41:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:41:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 03:41:08,167 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 03:41:08,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:41:08,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:41:08,498 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:41:08,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:41:09,423 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:41:09,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:41:09,435 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:41:09,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:09 BoogieIcfgContainer [2022-11-23 03:41:09,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:41:09,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:41:09,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:41:09,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:41:09,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:41:06" (1/3) ... [2022-11-23 03:41:09,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6401902f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:09, skipping insertion in model container [2022-11-23 03:41:09,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:41:07" (2/3) ... [2022-11-23 03:41:09,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6401902f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:41:09, skipping insertion in model container [2022-11-23 03:41:09,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:41:09" (3/3) ... [2022-11-23 03:41:09,448 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product19.cil.c [2022-11-23 03:41:09,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:41:09,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:41:09,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:41:09,547 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;@17df58d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:41:09,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:41:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 252 states have (on average 1.5198412698412698) internal successors, (383), 256 states have internal predecessors, (383), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-23 03:41:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 03:41:09,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:09,578 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:09,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1121025991, now seen corresponding path program 1 times [2022-11-23 03:41:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:09,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202893004] [2022-11-23 03:41:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:09,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:41:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 03:41:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 03:41:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 03:41:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-23 03:41:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:41:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 03:41:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 03:41:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 03:41:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 03:41:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:41:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:10,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202893004] [2022-11-23 03:41:10,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202893004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:41:10,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254162856] [2022-11-23 03:41:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:10,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:41:10,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:41:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:10,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:41:10,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:41:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 03:41:10,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:41:10,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254162856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:10,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:41:10,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-11-23 03:41:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536573345] [2022-11-23 03:41:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:10,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:41:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:10,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:41:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:41:10,963 INFO L87 Difference]: Start difference. First operand has 323 states, 252 states have (on average 1.5198412698412698) internal successors, (383), 256 states have internal predecessors, (383), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:11,023 INFO L93 Difference]: Finished difference Result 491 states and 720 transitions. [2022-11-23 03:41:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:41:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2022-11-23 03:41:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:11,047 INFO L225 Difference]: With dead ends: 491 [2022-11-23 03:41:11,047 INFO L226 Difference]: Without dead ends: 315 [2022-11-23 03:41:11,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:41:11,061 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:11,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:41:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-23 03:41:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-23 03:41:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 246 states have (on average 1.5121951219512195) internal successors, (372), 248 states have internal predecessors, (372), 50 states have call successors, (50), 19 states have call predecessors, (50), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-23 03:41:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 469 transitions. [2022-11-23 03:41:11,149 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 469 transitions. Word has length 103 [2022-11-23 03:41:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:11,153 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 469 transitions. [2022-11-23 03:41:11,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 469 transitions. [2022-11-23 03:41:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-23 03:41:11,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:11,162 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:11,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:41:11,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 03:41:11,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:11,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash 784420931, now seen corresponding path program 1 times [2022-11-23 03:41:11,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:11,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35637054] [2022-11-23 03:41:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:41:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 03:41:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 03:41:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-23 03:41:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-23 03:41:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 03:41:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 03:41:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:41:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 03:41:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 03:41:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 03:41:11,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:11,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35637054] [2022-11-23 03:41:11,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35637054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:41:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168051385] [2022-11-23 03:41:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:11,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:11,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:41:11,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:41:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 03:41:12,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:41:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 03:41:12,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:41:12,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168051385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:12,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:41:12,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-23 03:41:12,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692032577] [2022-11-23 03:41:12,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:12,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:41:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:41:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:41:12,207 INFO L87 Difference]: Start difference. First operand 315 states and 469 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:12,276 INFO L93 Difference]: Finished difference Result 480 states and 697 transitions. [2022-11-23 03:41:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:41:12,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-11-23 03:41:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:12,283 INFO L225 Difference]: With dead ends: 480 [2022-11-23 03:41:12,283 INFO L226 Difference]: Without dead ends: 318 [2022-11-23 03:41:12,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:41:12,287 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:12,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 932 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:41:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-23 03:41:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-11-23 03:41:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 248 states have (on average 1.5080645161290323) internal successors, (374), 250 states have internal predecessors, (374), 50 states have call successors, (50), 19 states have call predecessors, (50), 18 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-11-23 03:41:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 471 transitions. [2022-11-23 03:41:12,330 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 471 transitions. Word has length 104 [2022-11-23 03:41:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:12,333 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 471 transitions. [2022-11-23 03:41:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 471 transitions. [2022-11-23 03:41:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 03:41:12,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:12,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:12,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:41:12,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:12,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash 732434924, now seen corresponding path program 1 times [2022-11-23 03:41:12,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:12,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426495556] [2022-11-23 03:41:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:12,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:41:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 03:41:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 03:41:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-23 03:41:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 03:41:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 03:41:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 03:41:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 03:41:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 03:41:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 03:41:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:41:12,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426495556] [2022-11-23 03:41:12,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426495556] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:41:12,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417393371] [2022-11-23 03:41:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:12,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:12,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:12,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:41:12,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:41:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:41:13,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:41:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 03:41:13,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:41:13,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417393371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:13,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:41:13,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-23 03:41:13,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731307190] [2022-11-23 03:41:13,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:13,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:41:13,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:13,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:41:13,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:41:13,292 INFO L87 Difference]: Start difference. First operand 317 states and 471 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:13,356 INFO L93 Difference]: Finished difference Result 664 states and 1001 transitions. [2022-11-23 03:41:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:41:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 110 [2022-11-23 03:41:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:13,363 INFO L225 Difference]: With dead ends: 664 [2022-11-23 03:41:13,363 INFO L226 Difference]: Without dead ends: 374 [2022-11-23 03:41:13,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:41:13,369 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 107 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:13,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 907 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:41:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-23 03:41:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 366. [2022-11-23 03:41:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 288 states have internal predecessors, (436), 61 states have call successors, (61), 19 states have call predecessors, (61), 18 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-23 03:41:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 555 transitions. [2022-11-23 03:41:13,417 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 555 transitions. Word has length 110 [2022-11-23 03:41:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:13,417 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 555 transitions. [2022-11-23 03:41:13,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 555 transitions. [2022-11-23 03:41:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 03:41:13,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:13,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:13,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:41:13,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:13,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash -588607360, now seen corresponding path program 1 times [2022-11-23 03:41:13,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:13,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647544593] [2022-11-23 03:41:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:13,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 03:41:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 03:41:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 03:41:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-23 03:41:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 03:41:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 03:41:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:41:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 03:41:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:41:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 03:41:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:41:13,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647544593] [2022-11-23 03:41:13,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647544593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:41:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705521962] [2022-11-23 03:41:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:13,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:13,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:41:13,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:41:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:14,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:41:14,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:41:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 03:41:14,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:41:14,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705521962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:14,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:41:14,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-23 03:41:14,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018502080] [2022-11-23 03:41:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:14,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:41:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:41:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:41:14,379 INFO L87 Difference]: Start difference. First operand 366 states and 555 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:14,465 INFO L93 Difference]: Finished difference Result 723 states and 1100 transitions. [2022-11-23 03:41:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:41:14,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2022-11-23 03:41:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:14,470 INFO L225 Difference]: With dead ends: 723 [2022-11-23 03:41:14,470 INFO L226 Difference]: Without dead ends: 368 [2022-11-23 03:41:14,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:14,473 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 125 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:14,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1695 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:41:14,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-23 03:41:14,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-11-23 03:41:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 287 states have (on average 1.5226480836236933) internal successors, (437), 290 states have internal predecessors, (437), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 58 states have call predecessors, (60), 58 states have call successors, (60) [2022-11-23 03:41:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 558 transitions. [2022-11-23 03:41:14,507 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 558 transitions. Word has length 111 [2022-11-23 03:41:14,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:14,507 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 558 transitions. [2022-11-23 03:41:14,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 558 transitions. [2022-11-23 03:41:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 03:41:14,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:14,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:14,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:41:14,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:14,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:14,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:14,723 INFO L85 PathProgramCache]: Analyzing trace with hash 811658181, now seen corresponding path program 1 times [2022-11-23 03:41:14,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:14,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886859243] [2022-11-23 03:41:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:14,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:14,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 03:41:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 03:41:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 03:41:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 03:41:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 03:41:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 03:41:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:41:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 03:41:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 03:41:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 03:41:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886859243] [2022-11-23 03:41:15,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886859243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:41:15,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479394457] [2022-11-23 03:41:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:15,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:41:15,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:41:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:41:15,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:41:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 03:41:15,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:41:15,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479394457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:15,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:41:15,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-11-23 03:41:15,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338010794] [2022-11-23 03:41:15,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:15,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:41:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:15,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:41:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:41:15,503 INFO L87 Difference]: Start difference. First operand 368 states and 558 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:15,593 INFO L93 Difference]: Finished difference Result 725 states and 1105 transitions. [2022-11-23 03:41:15,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:41:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-11-23 03:41:15,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:15,597 INFO L225 Difference]: With dead ends: 725 [2022-11-23 03:41:15,597 INFO L226 Difference]: Without dead ends: 370 [2022-11-23 03:41:15,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:41:15,600 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 124 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:15,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1684 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:41:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-23 03:41:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2022-11-23 03:41:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 292 states have internal predecessors, (438), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2022-11-23 03:41:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 564 transitions. [2022-11-23 03:41:15,625 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 564 transitions. Word has length 112 [2022-11-23 03:41:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:15,626 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 564 transitions. [2022-11-23 03:41:15,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 564 transitions. [2022-11-23 03:41:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 03:41:15,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:15,629 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:15,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:41:15,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:15,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1072867297, now seen corresponding path program 1 times [2022-11-23 03:41:15,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:15,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414954824] [2022-11-23 03:41:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 03:41:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 03:41:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-23 03:41:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 03:41:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 03:41:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 03:41:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 03:41:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 03:41:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:41:16,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:16,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414954824] [2022-11-23 03:41:16,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414954824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:16,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:16,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:41:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120613672] [2022-11-23 03:41:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:41:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:16,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:41:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:41:16,111 INFO L87 Difference]: Start difference. First operand 370 states and 564 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:18,649 INFO L93 Difference]: Finished difference Result 875 states and 1334 transitions. [2022-11-23 03:41:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:41:18,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-23 03:41:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:18,655 INFO L225 Difference]: With dead ends: 875 [2022-11-23 03:41:18,655 INFO L226 Difference]: Without dead ends: 528 [2022-11-23 03:41:18,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:41:18,659 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1119 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:18,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 988 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 03:41:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-11-23 03:41:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 370. [2022-11-23 03:41:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 292 states have internal predecessors, (438), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 58 states have call predecessors, (64), 58 states have call successors, (64) [2022-11-23 03:41:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 563 transitions. [2022-11-23 03:41:18,727 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 563 transitions. Word has length 113 [2022-11-23 03:41:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:18,727 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 563 transitions. [2022-11-23 03:41:18,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 563 transitions. [2022-11-23 03:41:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 03:41:18,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:18,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:18,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:41:18,731 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:18,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash -448183550, now seen corresponding path program 2 times [2022-11-23 03:41:18,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:18,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136413435] [2022-11-23 03:41:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 03:41:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 03:41:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-23 03:41:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 03:41:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 03:41:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 03:41:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 03:41:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 03:41:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:41:18,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:18,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136413435] [2022-11-23 03:41:18,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136413435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:18,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:18,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:41:18,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975216703] [2022-11-23 03:41:18,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:18,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:41:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:41:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:41:18,990 INFO L87 Difference]: Start difference. First operand 370 states and 563 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:21,501 INFO L93 Difference]: Finished difference Result 877 states and 1337 transitions. [2022-11-23 03:41:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:41:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-11-23 03:41:21,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:21,506 INFO L225 Difference]: With dead ends: 877 [2022-11-23 03:41:21,506 INFO L226 Difference]: Without dead ends: 530 [2022-11-23 03:41:21,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:41:21,510 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1115 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:21,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 987 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-23 03:41:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-23 03:41:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 372. [2022-11-23 03:41:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 58 states have call predecessors, (66), 58 states have call successors, (66) [2022-11-23 03:41:21,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 566 transitions. [2022-11-23 03:41:21,564 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 566 transitions. Word has length 114 [2022-11-23 03:41:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:21,566 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 566 transitions. [2022-11-23 03:41:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 566 transitions. [2022-11-23 03:41:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 03:41:21,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:21,569 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:21,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:41:21,570 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:21,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1957224508, now seen corresponding path program 1 times [2022-11-23 03:41:21,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:21,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880762638] [2022-11-23 03:41:21,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:21,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 03:41:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 03:41:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 03:41:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 03:41:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 03:41:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 03:41:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 03:41:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 03:41:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:21,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880762638] [2022-11-23 03:41:21,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880762638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:21,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:21,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:41:21,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845096965] [2022-11-23 03:41:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:21,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:41:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:41:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:41:21,887 INFO L87 Difference]: Start difference. First operand 372 states and 566 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 03:41:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:25,164 INFO L93 Difference]: Finished difference Result 875 states and 1332 transitions. [2022-11-23 03:41:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:41:25,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2022-11-23 03:41:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:25,169 INFO L225 Difference]: With dead ends: 875 [2022-11-23 03:41:25,169 INFO L226 Difference]: Without dead ends: 530 [2022-11-23 03:41:25,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-23 03:41:25,171 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1239 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4059 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 4512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 4059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:25,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1289 Invalid, 4512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 4059 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 03:41:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-11-23 03:41:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 372. [2022-11-23 03:41:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2022-11-23 03:41:25,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 565 transitions. [2022-11-23 03:41:25,217 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 565 transitions. Word has length 115 [2022-11-23 03:41:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:25,217 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 565 transitions. [2022-11-23 03:41:25,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 03:41:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 565 transitions. [2022-11-23 03:41:25,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 03:41:25,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:25,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:41:25,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -853912776, now seen corresponding path program 2 times [2022-11-23 03:41:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895239725] [2022-11-23 03:41:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 03:41:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 03:41:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 03:41:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 03:41:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 03:41:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 03:41:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 03:41:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 03:41:25,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:25,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895239725] [2022-11-23 03:41:25,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895239725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:25,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:41:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251027767] [2022-11-23 03:41:25,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:25,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:41:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:41:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:41:25,503 INFO L87 Difference]: Start difference. First operand 372 states and 565 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 03:41:28,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:28,726 INFO L93 Difference]: Finished difference Result 877 states and 1338 transitions. [2022-11-23 03:41:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:41:28,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-11-23 03:41:28,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:28,731 INFO L225 Difference]: With dead ends: 877 [2022-11-23 03:41:28,731 INFO L226 Difference]: Without dead ends: 532 [2022-11-23 03:41:28,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-23 03:41:28,734 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1233 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4099 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 4099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:28,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1290 Invalid, 4549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [450 Valid, 4099 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 03:41:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-23 03:41:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 374. [2022-11-23 03:41:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (70), 58 states have call predecessors, (70), 58 states have call successors, (70) [2022-11-23 03:41:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 571 transitions. [2022-11-23 03:41:28,801 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 571 transitions. Word has length 116 [2022-11-23 03:41:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:28,801 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 571 transitions. [2022-11-23 03:41:28,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 03:41:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 571 transitions. [2022-11-23 03:41:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 03:41:28,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:28,804 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:28,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:41:28,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 890298187, now seen corresponding path program 1 times [2022-11-23 03:41:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069373573] [2022-11-23 03:41:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 03:41:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 03:41:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:41:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 03:41:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 03:41:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 03:41:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 03:41:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 03:41:28,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:28,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069373573] [2022-11-23 03:41:28,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069373573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:28,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:28,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:41:28,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629273141] [2022-11-23 03:41:28,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:29,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:41:29,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:41:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:41:29,001 INFO L87 Difference]: Start difference. First operand 374 states and 571 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:31,391 INFO L93 Difference]: Finished difference Result 879 states and 1341 transitions. [2022-11-23 03:41:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 03:41:31,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 117 [2022-11-23 03:41:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:31,396 INFO L225 Difference]: With dead ends: 879 [2022-11-23 03:41:31,396 INFO L226 Difference]: Without dead ends: 532 [2022-11-23 03:41:31,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:41:31,399 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1116 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2454 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 2454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:31,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 984 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 2454 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 03:41:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-23 03:41:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 374. [2022-11-23 03:41:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (70), 58 states have call predecessors, (70), 58 states have call successors, (70) [2022-11-23 03:41:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 571 transitions. [2022-11-23 03:41:31,447 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 571 transitions. Word has length 117 [2022-11-23 03:41:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:31,447 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 571 transitions. [2022-11-23 03:41:31,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 03:41:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 571 transitions. [2022-11-23 03:41:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 03:41:31,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:31,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:31,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:41:31,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1493626551, now seen corresponding path program 1 times [2022-11-23 03:41:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:31,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224004131] [2022-11-23 03:41:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 03:41:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-23 03:41:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:41:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 03:41:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 03:41:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 03:41:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 03:41:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:31,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224004131] [2022-11-23 03:41:31,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224004131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:41:31,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964356027] [2022-11-23 03:41:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:31,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:41:31,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:41:31,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:41:31,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:41:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:31,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:41:31,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:41:31,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:31,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:41:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:32,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964356027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:41:32,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:41:32,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-11-23 03:41:32,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356863301] [2022-11-23 03:41:32,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:41:32,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:41:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:32,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:41:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:41:32,098 INFO L87 Difference]: Start difference. First operand 374 states and 571 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (32), 6 states have call predecessors, (32), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 03:41:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:35,044 INFO L93 Difference]: Finished difference Result 1046 states and 1665 transitions. [2022-11-23 03:41:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:41:35,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (32), 6 states have call predecessors, (32), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 117 [2022-11-23 03:41:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:35,051 INFO L225 Difference]: With dead ends: 1046 [2022-11-23 03:41:35,051 INFO L226 Difference]: Without dead ends: 884 [2022-11-23 03:41:35,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:41:35,054 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1508 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 2938 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:35,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 1474 Invalid, 3524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2938 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 03:41:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-23 03:41:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 702. [2022-11-23 03:41:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 554 states have (on average 1.5848375451263539) internal successors, (878), 560 states have internal predecessors, (878), 125 states have call successors, (125), 19 states have call predecessors, (125), 22 states have return successors, (144), 122 states have call predecessors, (144), 122 states have call successors, (144) [2022-11-23 03:41:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1147 transitions. [2022-11-23 03:41:35,135 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1147 transitions. Word has length 117 [2022-11-23 03:41:35,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:35,136 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1147 transitions. [2022-11-23 03:41:35,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (32), 6 states have call predecessors, (32), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 03:41:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1147 transitions. [2022-11-23 03:41:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-23 03:41:35,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:35,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:35,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:41:35,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafcf19f-fe06-4082-bb0f-f69437b759d0/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:41:35,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash -393474106, now seen corresponding path program 1 times [2022-11-23 03:41:35,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:35,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132088034] [2022-11-23 03:41:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 03:41:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 03:41:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 03:41:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 03:41:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 03:41:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 03:41:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 03:41:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132088034] [2022-11-23 03:41:35,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132088034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:35,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:35,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188806972] [2022-11-23 03:41:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:35,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:35,489 INFO L87 Difference]: Start difference. First operand 702 states and 1147 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:37,444 INFO L93 Difference]: Finished difference Result 1827 states and 3036 transitions. [2022-11-23 03:41:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:37,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-11-23 03:41:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:37,453 INFO L225 Difference]: With dead ends: 1827 [2022-11-23 03:41:37,453 INFO L226 Difference]: Without dead ends: 1193 [2022-11-23 03:41:37,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:37,458 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1098 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:37,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 848 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 03:41:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2022-11-23 03:41:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1027. [2022-11-23 03:41:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 815 states have (on average 1.5987730061349694) internal successors, (1303), 821 states have internal predecessors, (1303), 189 states have call successors, (189), 19 states have call predecessors, (189), 22 states have return successors, (218), 186 states have call predecessors, (218), 186 states have call successors, (218) [2022-11-23 03:41:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1710 transitions. [2022-11-23 03:41:37,580 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1710 transitions. Word has length 123 [2022-11-23 03:41:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:37,580 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1710 transitions. [2022-11-23 03:41:37,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1710 transitions. [2022-11-23 03:41:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 03:41:37,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:37,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:37,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:41:37,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:37,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1636941891, now seen corresponding path program 1 times [2022-11-23 03:41:37,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:37,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668142561] [2022-11-23 03:41:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:37,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 03:41:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 03:41:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 03:41:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 03:41:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 03:41:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 03:41:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 03:41:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:37,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:37,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668142561] [2022-11-23 03:41:37,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668142561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:37,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:37,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373009589] [2022-11-23 03:41:37,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:37,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:37,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:37,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:37,726 INFO L87 Difference]: Start difference. First operand 1027 states and 1710 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:39,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:39,841 INFO L93 Difference]: Finished difference Result 2607 states and 4385 transitions. [2022-11-23 03:41:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-11-23 03:41:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:39,853 INFO L225 Difference]: With dead ends: 2607 [2022-11-23 03:41:39,854 INFO L226 Difference]: Without dead ends: 1701 [2022-11-23 03:41:39,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:39,860 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1097 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:39,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 831 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 03:41:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-11-23 03:41:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1535. [2022-11-23 03:41:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1228 states have (on average 1.6074918566775245) internal successors, (1974), 1234 states have internal predecessors, (1974), 284 states have call successors, (284), 19 states have call predecessors, (284), 22 states have return successors, (313), 281 states have call predecessors, (313), 281 states have call successors, (313) [2022-11-23 03:41:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2571 transitions. [2022-11-23 03:41:40,068 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2571 transitions. Word has length 124 [2022-11-23 03:41:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:40,069 INFO L495 AbstractCegarLoop]: Abstraction has 1535 states and 2571 transitions. [2022-11-23 03:41:40,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:40,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2571 transitions. [2022-11-23 03:41:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-23 03:41:40,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:40,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:40,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:41:40,079 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1808393272, now seen corresponding path program 1 times [2022-11-23 03:41:40,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769622588] [2022-11-23 03:41:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 03:41:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 03:41:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 03:41:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:41:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 03:41:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 03:41:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:41:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:40,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769622588] [2022-11-23 03:41:40,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769622588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:40,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:40,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925723417] [2022-11-23 03:41:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:40,203 INFO L87 Difference]: Start difference. First operand 1535 states and 2571 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:42,231 INFO L93 Difference]: Finished difference Result 3759 states and 6394 transitions. [2022-11-23 03:41:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-23 03:41:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:42,247 INFO L225 Difference]: With dead ends: 3759 [2022-11-23 03:41:42,248 INFO L226 Difference]: Without dead ends: 2470 [2022-11-23 03:41:42,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:42,255 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1094 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:42,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 827 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 03:41:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-11-23 03:41:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2304. [2022-11-23 03:41:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1874 states have (on average 1.6141942369263607) internal successors, (3025), 1880 states have internal predecessors, (3025), 407 states have call successors, (407), 19 states have call predecessors, (407), 22 states have return successors, (452), 404 states have call predecessors, (452), 404 states have call successors, (452) [2022-11-23 03:41:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3884 transitions. [2022-11-23 03:41:42,526 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3884 transitions. Word has length 125 [2022-11-23 03:41:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:42,527 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3884 transitions. [2022-11-23 03:41:42,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3884 transitions. [2022-11-23 03:41:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 03:41:42,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:42,539 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:42,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:41:42,540 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash -933507388, now seen corresponding path program 1 times [2022-11-23 03:41:42,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028337101] [2022-11-23 03:41:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:42,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 03:41:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 03:41:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 03:41:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 03:41:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 03:41:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 03:41:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 03:41:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:42,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028337101] [2022-11-23 03:41:42,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028337101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:42,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:42,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636157209] [2022-11-23 03:41:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:42,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:42,686 INFO L87 Difference]: Start difference. First operand 2304 states and 3884 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:44,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:44,794 INFO L93 Difference]: Finished difference Result 5553 states and 9528 transitions. [2022-11-23 03:41:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:44,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-11-23 03:41:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:44,819 INFO L225 Difference]: With dead ends: 5553 [2022-11-23 03:41:44,819 INFO L226 Difference]: Without dead ends: 3699 [2022-11-23 03:41:44,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:44,828 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1092 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:44,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 827 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 03:41:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-11-23 03:41:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3533. [2022-11-23 03:41:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 2924 states have (on average 1.6183310533515731) internal successors, (4732), 2930 states have internal predecessors, (4732), 586 states have call successors, (586), 19 states have call predecessors, (586), 22 states have return successors, (657), 583 states have call predecessors, (657), 583 states have call successors, (657) [2022-11-23 03:41:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 5975 transitions. [2022-11-23 03:41:45,262 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 5975 transitions. Word has length 126 [2022-11-23 03:41:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:45,263 INFO L495 AbstractCegarLoop]: Abstraction has 3533 states and 5975 transitions. [2022-11-23 03:41:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 5975 transitions. [2022-11-23 03:41:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 03:41:45,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:45,280 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:41:45,280 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1789661796, now seen corresponding path program 1 times [2022-11-23 03:41:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071188801] [2022-11-23 03:41:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 03:41:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 03:41:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 03:41:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 03:41:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 03:41:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 03:41:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 03:41:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:45,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:45,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071188801] [2022-11-23 03:41:45,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071188801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:45,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:45,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:45,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222790472] [2022-11-23 03:41:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:45,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:45,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:45,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:45,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:45,446 INFO L87 Difference]: Start difference. First operand 3533 states and 5975 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:47,606 INFO L93 Difference]: Finished difference Result 8501 states and 14675 transitions. [2022-11-23 03:41:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:47,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-11-23 03:41:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:47,637 INFO L225 Difference]: With dead ends: 8501 [2022-11-23 03:41:47,637 INFO L226 Difference]: Without dead ends: 5730 [2022-11-23 03:41:47,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:47,648 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1090 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:47,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 857 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 03:41:47,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2022-11-23 03:41:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 5564. [2022-11-23 03:41:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 4579 states have (on average 1.6125791657567154) internal successors, (7384), 4585 states have internal predecessors, (7384), 962 states have call successors, (962), 19 states have call predecessors, (962), 22 states have return successors, (1077), 959 states have call predecessors, (1077), 959 states have call successors, (1077) [2022-11-23 03:41:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 9423 transitions. [2022-11-23 03:41:48,433 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 9423 transitions. Word has length 127 [2022-11-23 03:41:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:48,433 INFO L495 AbstractCegarLoop]: Abstraction has 5564 states and 9423 transitions. [2022-11-23 03:41:48,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 9423 transitions. [2022-11-23 03:41:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 03:41:48,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:48,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:48,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:41:48,459 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash 352802856, now seen corresponding path program 1 times [2022-11-23 03:41:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:48,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72224155] [2022-11-23 03:41:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 03:41:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 03:41:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 03:41:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 03:41:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 03:41:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 03:41:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 03:41:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:48,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72224155] [2022-11-23 03:41:48,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72224155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:48,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:48,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907118276] [2022-11-23 03:41:48,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:48,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:48,614 INFO L87 Difference]: Start difference. First operand 5564 states and 9423 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:51,169 INFO L93 Difference]: Finished difference Result 13838 states and 23896 transitions. [2022-11-23 03:41:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-11-23 03:41:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:51,220 INFO L225 Difference]: With dead ends: 13838 [2022-11-23 03:41:51,221 INFO L226 Difference]: Without dead ends: 9413 [2022-11-23 03:41:51,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:51,237 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1088 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:51,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 834 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 03:41:51,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2022-11-23 03:41:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9247. [2022-11-23 03:41:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9247 states, 7656 states have (on average 1.6105015673981191) internal successors, (12330), 7662 states have internal predecessors, (12330), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 22 states have return successors, (1761), 1565 states have call predecessors, (1761), 1565 states have call successors, (1761) [2022-11-23 03:41:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9247 states to 9247 states and 15659 transitions. [2022-11-23 03:41:52,471 INFO L78 Accepts]: Start accepts. Automaton has 9247 states and 15659 transitions. Word has length 128 [2022-11-23 03:41:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:52,472 INFO L495 AbstractCegarLoop]: Abstraction has 9247 states and 15659 transitions. [2022-11-23 03:41:52,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 9247 states and 15659 transitions. [2022-11-23 03:41:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-23 03:41:52,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:52,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:52,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 03:41:52,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -127866190, now seen corresponding path program 1 times [2022-11-23 03:41:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818655165] [2022-11-23 03:41:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:52,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 03:41:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 03:41:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 03:41:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 03:41:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 03:41:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 03:41:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 03:41:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:52,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:52,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818655165] [2022-11-23 03:41:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818655165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:52,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:52,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:52,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266599333] [2022-11-23 03:41:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:52,681 INFO L87 Difference]: Start difference. First operand 9247 states and 15659 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:41:55,720 INFO L93 Difference]: Finished difference Result 24022 states and 41442 transitions. [2022-11-23 03:41:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:41:55,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-23 03:41:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:41:55,798 INFO L225 Difference]: With dead ends: 24022 [2022-11-23 03:41:55,798 INFO L226 Difference]: Without dead ends: 16366 [2022-11-23 03:41:55,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:41:55,829 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1087 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:41:55,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 845 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 03:41:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16366 states. [2022-11-23 03:41:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16366 to 16200. [2022-11-23 03:41:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16200 states, 13406 states have (on average 1.601670893629718) internal successors, (21472), 13412 states have internal predecessors, (21472), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 22 states have return successors, (3108), 2768 states have call predecessors, (3108), 2768 states have call successors, (3108) [2022-11-23 03:41:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16200 states to 16200 states and 27351 transitions. [2022-11-23 03:41:58,008 INFO L78 Accepts]: Start accepts. Automaton has 16200 states and 27351 transitions. Word has length 129 [2022-11-23 03:41:58,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:41:58,008 INFO L495 AbstractCegarLoop]: Abstraction has 16200 states and 27351 transitions. [2022-11-23 03:41:58,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:41:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16200 states and 27351 transitions. [2022-11-23 03:41:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 03:41:58,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:41:58,048 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:41:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 03:41:58,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:41:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:41:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1902927817, now seen corresponding path program 1 times [2022-11-23 03:41:58,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:41:58,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227226662] [2022-11-23 03:41:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:41:58,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:41:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:41:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:41:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:41:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:41:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:41:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:41:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 03:41:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 03:41:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 03:41:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 03:41:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 03:41:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 03:41:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 03:41:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:41:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:41:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:41:58,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227226662] [2022-11-23 03:41:58,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227226662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:41:58,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:41:58,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:41:58,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276423655] [2022-11-23 03:41:58,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:41:58,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:41:58,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:41:58,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:41:58,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:41:58,205 INFO L87 Difference]: Start difference. First operand 16200 states and 27351 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:42:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:42:02,790 INFO L93 Difference]: Finished difference Result 42988 states and 74041 transitions. [2022-11-23 03:42:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:42:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-11-23 03:42:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:42:02,925 INFO L225 Difference]: With dead ends: 42988 [2022-11-23 03:42:02,926 INFO L226 Difference]: Without dead ends: 29021 [2022-11-23 03:42:02,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:42:02,965 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1085 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 03:42:02,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 828 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 03:42:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29021 states. [2022-11-23 03:42:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29021 to 28855. [2022-11-23 03:42:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28855 states, 24022 states have (on average 1.5975355923736574) internal successors, (38376), 24028 states have internal predecessors, (38376), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 22 states have return successors, (5421), 4807 states have call predecessors, (5421), 4807 states have call successors, (5421) [2022-11-23 03:42:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28855 states to 28855 states and 48607 transitions. [2022-11-23 03:42:05,659 INFO L78 Accepts]: Start accepts. Automaton has 28855 states and 48607 transitions. Word has length 130 [2022-11-23 03:42:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:42:05,660 INFO L495 AbstractCegarLoop]: Abstraction has 28855 states and 48607 transitions. [2022-11-23 03:42:05,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:42:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 28855 states and 48607 transitions. [2022-11-23 03:42:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 03:42:05,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:42:05,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:42:05,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 03:42:05,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:42:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:42:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -116851852, now seen corresponding path program 1 times [2022-11-23 03:42:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:42:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804213420] [2022-11-23 03:42:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:42:05,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:42:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:42:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:42:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:42:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:42:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:42:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:42:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 03:42:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 03:42:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 03:42:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 03:42:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 03:42:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 03:42:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 03:42:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:42:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:42:05,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804213420] [2022-11-23 03:42:05,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804213420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:42:05,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:42:05,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:42:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208120114] [2022-11-23 03:42:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:42:05,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:42:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:42:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:42:05,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:42:05,865 INFO L87 Difference]: Start difference. First operand 28855 states and 48607 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:42:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:42:12,060 INFO L93 Difference]: Finished difference Result 78750 states and 134800 transitions. [2022-11-23 03:42:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:42:12,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-11-23 03:42:12,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:42:12,320 INFO L225 Difference]: With dead ends: 78750 [2022-11-23 03:42:12,321 INFO L226 Difference]: Without dead ends: 52900 [2022-11-23 03:42:12,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:42:12,398 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1082 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:42:12,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 834 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 03:42:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52900 states. [2022-11-23 03:42:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52900 to 52734. [2022-11-23 03:42:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52734 states, 44186 states have (on average 1.5920200968632598) internal successors, (70345), 44192 states have internal predecessors, (70345), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 22 states have return successors, (9668), 8522 states have call predecessors, (9668), 8522 states have call successors, (9668) [2022-11-23 03:42:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52734 states to 52734 states and 88538 transitions. [2022-11-23 03:42:17,782 INFO L78 Accepts]: Start accepts. Automaton has 52734 states and 88538 transitions. Word has length 131 [2022-11-23 03:42:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:42:17,782 INFO L495 AbstractCegarLoop]: Abstraction has 52734 states and 88538 transitions. [2022-11-23 03:42:17,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 03:42:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52734 states and 88538 transitions. [2022-11-23 03:42:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-23 03:42:17,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:42:17,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:42:17,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 03:42:17,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:42:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:42:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -957404279, now seen corresponding path program 1 times [2022-11-23 03:42:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:42:17,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872153530] [2022-11-23 03:42:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:42:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:42:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 03:42:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 03:42:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:42:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 03:42:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 03:42:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 03:42:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 03:42:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 03:42:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 03:42:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 03:42:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 03:42:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 03:42:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-23 03:42:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:42:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 03:42:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:42:17,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872153530] [2022-11-23 03:42:17,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872153530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:42:17,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:42:17,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:42:17,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456014619] [2022-11-23 03:42:17,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:42:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:42:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:42:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:42:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:42:17,971 INFO L87 Difference]: Start difference. First operand 52734 states and 88538 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)