./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF --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 306f27715421bb9e01ba3845cf0d248e2328487b897edb7780679dfca2048140 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:07:32,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:07:32,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:07:32,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:07:32,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:07:32,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:07:32,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:07:32,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:07:32,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:07:32,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:07:32,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:07:32,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:07:32,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:07:32,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:07:32,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:07:32,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:07:32,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:07:32,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:07:32,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:07:32,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:07:32,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:07:32,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:07:32,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:07:32,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:07:32,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:07:32,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:07:32,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:07:32,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:07:32,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:07:32,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:07:32,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:07:32,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:07:32,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:07:32,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:07:32,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:07:32,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:07:32,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:07:32,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:07:32,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:07:32,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:07:32,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:07:32,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:07:32,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:07:32,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:07:32,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:07:32,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:07:32,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:07:32,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:07:32,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:07:32,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:07:32,308 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:07:32,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:07:32,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:07:32,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:07:32,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:07:32,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:07:32,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:07:32,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:07:32,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:07:32,312 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:07:32,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:07:32,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:07:32,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:07:32,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:07:32,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:07:32,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:07:32,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:07:32,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:07:32,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:07:32,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:07:32,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:07:32,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:07:32,318 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:07:32,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:07:32,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:07:32,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:07:32,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306f27715421bb9e01ba3845cf0d248e2328487b897edb7780679dfca2048140 [2021-11-20 06:07:32,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:07:32,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:07:32,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:07:32,704 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:07:32,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:07:32,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c [2021-11-20 06:07:32,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/data/3037000aa/d6a282bdd83a4ddebfb9ba11615ec108/FLAG2dc23fc8d [2021-11-20 06:07:33,996 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:07:33,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c [2021-11-20 06:07:34,065 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/data/3037000aa/d6a282bdd83a4ddebfb9ba11615ec108/FLAG2dc23fc8d [2021-11-20 06:07:34,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/data/3037000aa/d6a282bdd83a4ddebfb9ba11615ec108 [2021-11-20 06:07:34,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:07:34,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:07:34,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:07:34,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:07:34,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:07:34,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:07:34" (1/1) ... [2021-11-20 06:07:34,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0f8316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:34, skipping insertion in model container [2021-11-20 06:07:34,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:07:34" (1/1) ... [2021-11-20 06:07:34,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:07:34,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:07:37,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[377340,377353] [2021-11-20 06:07:37,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[383339,383352] [2021-11-20 06:07:38,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:07:38,028 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:07:39,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[377340,377353] [2021-11-20 06:07:39,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/sv-benchmarks/c/combinations/Problem05_label44+token_ring.06.cil-2.c[383339,383352] [2021-11-20 06:07:39,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:07:39,600 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:07:39,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39 WrapperNode [2021-11-20 06:07:39,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:07:39,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:07:39,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:07:39,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:07:39,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:39,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,326 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-11-20 06:07:40,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:07:40,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:07:40,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:07:40,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:07:40,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:40,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:41,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:07:41,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:07:41,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:07:41,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:07:41,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (1/1) ... [2021-11-20 06:07:41,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:07:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:07:41,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:07:41,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2c4d073-1d35-4b24-ba44-531f3dcd1207/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:07:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:07:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 06:07:41,123 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 06:07:41,123 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 06:07:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 06:07:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 06:07:41,124 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 06:07:41,124 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 06:07:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 06:07:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 06:07:41,125 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 06:07:41,125 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 06:07:41,126 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 06:07:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:07:41,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:07:41,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:07:41,306 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:07:41,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:07:50,360 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:07:50,392 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:07:50,392 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-20 06:07:50,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:07:50 BoogieIcfgContainer [2021-11-20 06:07:50,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:07:50,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:07:50,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:07:50,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:07:50,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:07:34" (1/3) ... [2021-11-20 06:07:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368bfe31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:07:50, skipping insertion in model container [2021-11-20 06:07:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:07:39" (2/3) ... [2021-11-20 06:07:50,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368bfe31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:07:50, skipping insertion in model container [2021-11-20 06:07:50,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:07:50" (3/3) ... [2021-11-20 06:07:50,411 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.06.cil-2.c [2021-11-20 06:07:50,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:07:50,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:07:50,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:07:50,498 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:07:50,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:07:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 06:07:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:07:50,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:50,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:50,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:50,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-11-20 06:07:50,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:50,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582962310] [2021-11-20 06:07:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:50,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:07:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:07:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:07:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:51,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:07:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:07:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:51,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:51,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582962310] [2021-11-20 06:07:51,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582962310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:51,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:51,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:07:51,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317266589] [2021-11-20 06:07:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:51,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:07:51,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:07:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:07:51,174 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:07:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:52,436 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2021-11-20 06:07:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:07:52,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:07:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:52,491 INFO L225 Difference]: With dead ends: 4896 [2021-11-20 06:07:52,491 INFO L226 Difference]: Without dead ends: 2424 [2021-11-20 06:07:52,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:07:52,515 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:52,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16728 Invalid, 440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:07:52,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-11-20 06:07:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2021-11-20 06:07:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 06:07:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2021-11-20 06:07:52,761 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2021-11-20 06:07:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:52,763 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2021-11-20 06:07:52,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:07:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2021-11-20 06:07:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:07:52,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:52,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:52,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:07:52,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2021-11-20 06:07:52,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:52,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344577208] [2021-11-20 06:07:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:52,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:07:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:07:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:53,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:07:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:07:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:07:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:53,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:53,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344577208] [2021-11-20 06:07:53,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344577208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:53,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:53,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:07:53,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020403058] [2021-11-20 06:07:53,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:53,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:07:53,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:07:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:07:53,100 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:07:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:54,758 INFO L93 Difference]: Finished difference Result 2651 states and 4792 transitions. [2021-11-20 06:07:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:07:54,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:07:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:54,783 INFO L225 Difference]: With dead ends: 2651 [2021-11-20 06:07:54,783 INFO L226 Difference]: Without dead ends: 2438 [2021-11-20 06:07:54,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:07:54,792 INFO L933 BasicCegarLoop]: 4325 mSDtfsCounter, 4580 mSDsluCounter, 16381 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20706 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:54,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20706 Invalid, 934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:07:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-11-20 06:07:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2348. [2021-11-20 06:07:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8383620689655173) internal successors, (4265), 2322 states have internal predecessors, (4265), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 06:07:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4305 transitions. [2021-11-20 06:07:54,915 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4305 transitions. Word has length 112 [2021-11-20 06:07:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:54,918 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4305 transitions. [2021-11-20 06:07:54,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:07:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4305 transitions. [2021-11-20 06:07:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:07:54,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:54,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:54,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:07:54,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:54,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2021-11-20 06:07:54,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313416848] [2021-11-20 06:07:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:54,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:07:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:07:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:07:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:07:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:55,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:07:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:55,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313416848] [2021-11-20 06:07:55,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313416848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:55,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:55,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:07:55,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795043543] [2021-11-20 06:07:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:55,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:07:55,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:07:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:07:55,219 INFO L87 Difference]: Start difference. First operand 2348 states and 4305 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:07:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:07:57,864 INFO L93 Difference]: Finished difference Result 2943 states and 5254 transitions. [2021-11-20 06:07:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:07:57,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:07:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:07:57,892 INFO L225 Difference]: With dead ends: 2943 [2021-11-20 06:07:57,892 INFO L226 Difference]: Without dead ends: 2730 [2021-11-20 06:07:57,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:07:57,897 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4793 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 21495 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:07:57,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 21495 Invalid, 1785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 06:07:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-11-20 06:07:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2571. [2021-11-20 06:07:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8165210484511518) internal successors, (4574), 2522 states have internal predecessors, (4574), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-11-20 06:07:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4655 transitions. [2021-11-20 06:07:58,039 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4655 transitions. Word has length 112 [2021-11-20 06:07:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:07:58,040 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4655 transitions. [2021-11-20 06:07:58,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:07:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4655 transitions. [2021-11-20 06:07:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:07:58,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:07:58,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:58,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:07:58,045 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:07:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:07:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2021-11-20 06:07:58,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:07:58,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640285290] [2021-11-20 06:07:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:07:58,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:07:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:07:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:07:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:07:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:07:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:07:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:07:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:07:58,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:07:58,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640285290] [2021-11-20 06:07:58,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640285290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:07:58,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:07:58,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:07:58,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681145260] [2021-11-20 06:07:58,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:07:58,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:07:58,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:07:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:07:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:07:58,242 INFO L87 Difference]: Start difference. First operand 2571 states and 4655 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:00,864 INFO L93 Difference]: Finished difference Result 3701 states and 6440 transitions. [2021-11-20 06:08:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:08:00,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:00,892 INFO L225 Difference]: With dead ends: 3701 [2021-11-20 06:08:00,893 INFO L226 Difference]: Without dead ends: 3267 [2021-11-20 06:08:00,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:08:00,898 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21522 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:00,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21522 Invalid, 1857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 06:08:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-11-20 06:08:01,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2982. [2021-11-20 06:08:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2885 states have (on average 1.7805892547660311) internal successors, (5137), 2891 states have internal predecessors, (5137), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-11-20 06:08:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5288 transitions. [2021-11-20 06:08:01,083 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5288 transitions. Word has length 112 [2021-11-20 06:08:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:01,084 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 5288 transitions. [2021-11-20 06:08:01,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5288 transitions. [2021-11-20 06:08:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:01,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:01,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:01,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:08:01,098 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2021-11-20 06:08:01,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:01,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675242169] [2021-11-20 06:08:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:01,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:01,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:01,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:01,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675242169] [2021-11-20 06:08:01,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675242169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:01,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:01,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:01,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048928906] [2021-11-20 06:08:01,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:01,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:01,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:01,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:01,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:01,258 INFO L87 Difference]: Start difference. First operand 2982 states and 5288 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:04,063 INFO L93 Difference]: Finished difference Result 5184 states and 8757 transitions. [2021-11-20 06:08:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:08:04,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:04,092 INFO L225 Difference]: With dead ends: 5184 [2021-11-20 06:08:04,092 INFO L226 Difference]: Without dead ends: 4339 [2021-11-20 06:08:04,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:08:04,098 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21518 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:04,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21518 Invalid, 1850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 06:08:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-11-20 06:08:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 3807. [2021-11-20 06:08:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7302595251242407) internal successors, (6267), 3632 states have internal predecessors, (6267), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-11-20 06:08:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6564 transitions. [2021-11-20 06:08:04,296 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6564 transitions. Word has length 112 [2021-11-20 06:08:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:04,297 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6564 transitions. [2021-11-20 06:08:04,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6564 transitions. [2021-11-20 06:08:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:04,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:04,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:04,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:08:04,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2021-11-20 06:08:04,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:04,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086641810] [2021-11-20 06:08:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:04,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:04,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086641810] [2021-11-20 06:08:04,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086641810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:04,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:04,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:04,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130137343] [2021-11-20 06:08:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:04,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:04,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:04,408 INFO L87 Difference]: Start difference. First operand 3807 states and 6564 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:05,564 INFO L93 Difference]: Finished difference Result 6031 states and 10100 transitions. [2021-11-20 06:08:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:08:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:05,594 INFO L225 Difference]: With dead ends: 6031 [2021-11-20 06:08:05,594 INFO L226 Difference]: Without dead ends: 4359 [2021-11-20 06:08:05,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:08:05,603 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4581 mSDsluCounter, 16380 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 20691 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:05,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 20691 Invalid, 895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:08:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2021-11-20 06:08:05,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 3807. [2021-11-20 06:08:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7277747101049143) internal successors, (6258), 3632 states have internal predecessors, (6258), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-11-20 06:08:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6555 transitions. [2021-11-20 06:08:05,791 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6555 transitions. Word has length 112 [2021-11-20 06:08:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:05,791 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6555 transitions. [2021-11-20 06:08:05,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6555 transitions. [2021-11-20 06:08:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:05,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:05,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:05,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:08:05,795 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:05,796 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2021-11-20 06:08:05,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:05,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568618608] [2021-11-20 06:08:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:05,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:05,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:05,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568618608] [2021-11-20 06:08:05,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568618608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:05,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:05,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:05,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434883054] [2021-11-20 06:08:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:05,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:05,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:05,907 INFO L87 Difference]: Start difference. First operand 3807 states and 6555 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:07,012 INFO L93 Difference]: Finished difference Result 6022 states and 10057 transitions. [2021-11-20 06:08:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:08:07,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:07,058 INFO L225 Difference]: With dead ends: 6022 [2021-11-20 06:08:07,058 INFO L226 Difference]: Without dead ends: 4350 [2021-11-20 06:08:07,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:08:07,068 INFO L933 BasicCegarLoop]: 4307 mSDtfsCounter, 4672 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 16613 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:07,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 16613 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:08:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-11-20 06:08:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 3807. [2021-11-20 06:08:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7252898950855882) internal successors, (6249), 3632 states have internal predecessors, (6249), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-11-20 06:08:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6546 transitions. [2021-11-20 06:08:07,262 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6546 transitions. Word has length 112 [2021-11-20 06:08:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:07,262 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6546 transitions. [2021-11-20 06:08:07,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6546 transitions. [2021-11-20 06:08:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:07,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:07,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:07,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:08:07,267 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2021-11-20 06:08:07,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037211250] [2021-11-20 06:08:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:07,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:07,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037211250] [2021-11-20 06:08:07,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037211250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:07,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:07,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:07,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092290318] [2021-11-20 06:08:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:07,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:07,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:07,390 INFO L87 Difference]: Start difference. First operand 3807 states and 6546 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:09,810 INFO L93 Difference]: Finished difference Result 8873 states and 14409 transitions. [2021-11-20 06:08:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:08:09,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:09,838 INFO L225 Difference]: With dead ends: 8873 [2021-11-20 06:08:09,838 INFO L226 Difference]: Without dead ends: 7203 [2021-11-20 06:08:09,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:08:09,848 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 5020 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 21491 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:09,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 21491 Invalid, 1798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:08:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7203 states. [2021-11-20 06:08:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7203 to 5454. [2021-11-20 06:08:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5454 states, 5101 states have (on average 1.666535973338561) internal successors, (8501), 5119 states have internal predecessors, (8501), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2021-11-20 06:08:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 9092 transitions. [2021-11-20 06:08:10,199 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 9092 transitions. Word has length 112 [2021-11-20 06:08:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:10,200 INFO L470 AbstractCegarLoop]: Abstraction has 5454 states and 9092 transitions. [2021-11-20 06:08:10,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 9092 transitions. [2021-11-20 06:08:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:10,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:10,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:10,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:08:10,206 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:10,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:10,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2021-11-20 06:08:10,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:10,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119866161] [2021-11-20 06:08:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:10,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:10,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:10,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:10,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:10,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:10,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119866161] [2021-11-20 06:08:10,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119866161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:10,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:10,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:10,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501130584] [2021-11-20 06:08:10,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:10,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:10,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:10,354 INFO L87 Difference]: Start difference. First operand 5454 states and 9092 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:12,885 INFO L93 Difference]: Finished difference Result 15054 states and 24055 transitions. [2021-11-20 06:08:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:08:12,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:12,932 INFO L225 Difference]: With dead ends: 15054 [2021-11-20 06:08:12,932 INFO L226 Difference]: Without dead ends: 11737 [2021-11-20 06:08:12,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:08:12,950 INFO L933 BasicCegarLoop]: 4497 mSDtfsCounter, 4954 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:12,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4974 Valid, 21483 Invalid, 1752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 06:08:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-11-20 06:08:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8755. [2021-11-20 06:08:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8755 states, 8074 states have (on average 1.6154322516720336) internal successors, (13043), 8108 states have internal predecessors, (13043), 455 states have call successors, (455), 192 states have call predecessors, (455), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2021-11-20 06:08:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 14260 transitions. [2021-11-20 06:08:13,614 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 14260 transitions. Word has length 112 [2021-11-20 06:08:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:13,614 INFO L470 AbstractCegarLoop]: Abstraction has 8755 states and 14260 transitions. [2021-11-20 06:08:13,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 14260 transitions. [2021-11-20 06:08:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:13,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:13,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:13,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:08:13,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2021-11-20 06:08:13,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89942281] [2021-11-20 06:08:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:13,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:13,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:13,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:13,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89942281] [2021-11-20 06:08:13,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89942281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:13,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:13,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:13,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677831939] [2021-11-20 06:08:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:13,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:13,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:13,750 INFO L87 Difference]: Start difference. First operand 8755 states and 14260 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:16,780 INFO L93 Difference]: Finished difference Result 27325 states and 43401 transitions. [2021-11-20 06:08:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:08:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:16,873 INFO L225 Difference]: With dead ends: 27325 [2021-11-20 06:08:16,874 INFO L226 Difference]: Without dead ends: 20707 [2021-11-20 06:08:16,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:08:16,902 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4927 mSDsluCounter, 16957 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:16,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21431 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 06:08:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2021-11-20 06:08:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 15341. [2021-11-20 06:08:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15341 states, 14020 states have (on average 1.5793865905848787) internal successors, (22143), 14086 states have internal predecessors, (22143), 871 states have call successors, (871), 384 states have call predecessors, (871), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2021-11-20 06:08:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15341 states to 15341 states and 24742 transitions. [2021-11-20 06:08:17,939 INFO L78 Accepts]: Start accepts. Automaton has 15341 states and 24742 transitions. Word has length 112 [2021-11-20 06:08:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:17,940 INFO L470 AbstractCegarLoop]: Abstraction has 15341 states and 24742 transitions. [2021-11-20 06:08:17,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 15341 states and 24742 transitions. [2021-11-20 06:08:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:17,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:17,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:17,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:08:17,955 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2021-11-20 06:08:17,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:17,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512347011] [2021-11-20 06:08:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:17,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:18,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:18,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:18,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512347011] [2021-11-20 06:08:18,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512347011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:18,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:18,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:18,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120388356] [2021-11-20 06:08:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:18,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:18,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:18,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:18,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:18,076 INFO L87 Difference]: Start difference. First operand 15341 states and 24742 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:22,225 INFO L93 Difference]: Finished difference Result 51275 states and 81797 transitions. [2021-11-20 06:08:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:08:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:22,404 INFO L225 Difference]: With dead ends: 51275 [2021-11-20 06:08:22,404 INFO L226 Difference]: Without dead ends: 38071 [2021-11-20 06:08:22,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:08:22,463 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4805 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:22,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 21517 Invalid, 1907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:08:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38071 states. [2021-11-20 06:08:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38071 to 28481. [2021-11-20 06:08:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5581583822167335) internal successors, (40375), 26042 states have internal predecessors, (40375), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-11-20 06:08:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46160 transitions. [2021-11-20 06:08:24,640 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46160 transitions. Word has length 112 [2021-11-20 06:08:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:24,641 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46160 transitions. [2021-11-20 06:08:24,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46160 transitions. [2021-11-20 06:08:24,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:24,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:24,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:24,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:08:24,667 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1164896607, now seen corresponding path program 1 times [2021-11-20 06:08:24,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:24,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679700519] [2021-11-20 06:08:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:24,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:24,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:24,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:24,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679700519] [2021-11-20 06:08:24,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679700519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:24,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:24,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:24,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307061666] [2021-11-20 06:08:24,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:24,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:24,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:24,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:24,794 INFO L87 Difference]: Start difference. First operand 28481 states and 46160 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:27,921 INFO L93 Difference]: Finished difference Result 61777 states and 101218 transitions. [2021-11-20 06:08:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:08:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:27,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:28,075 INFO L225 Difference]: With dead ends: 61777 [2021-11-20 06:08:28,075 INFO L226 Difference]: Without dead ends: 35431 [2021-11-20 06:08:28,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:08:28,136 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4580 mSDsluCounter, 16378 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20665 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:28,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20665 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:08:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35431 states. [2021-11-20 06:08:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35431 to 28481. [2021-11-20 06:08:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5531799938252546) internal successors, (40246), 26042 states have internal predecessors, (40246), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-11-20 06:08:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46031 transitions. [2021-11-20 06:08:30,261 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46031 transitions. Word has length 112 [2021-11-20 06:08:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:30,261 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46031 transitions. [2021-11-20 06:08:30,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46031 transitions. [2021-11-20 06:08:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:30,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:30,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:30,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:08:30,292 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1805214495, now seen corresponding path program 1 times [2021-11-20 06:08:30,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532023748] [2021-11-20 06:08:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:30,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:30,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:30,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532023748] [2021-11-20 06:08:30,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532023748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:30,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:30,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:30,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785439015] [2021-11-20 06:08:30,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:30,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:30,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:30,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:30,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:30,414 INFO L87 Difference]: Start difference. First operand 28481 states and 46031 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:36,772 INFO L93 Difference]: Finished difference Result 96071 states and 155187 transitions. [2021-11-20 06:08:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:08:36,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:37,143 INFO L225 Difference]: With dead ends: 96071 [2021-11-20 06:08:37,143 INFO L226 Difference]: Without dead ends: 69727 [2021-11-20 06:08:37,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:08:37,210 INFO L933 BasicCegarLoop]: 4489 mSDtfsCounter, 4782 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 21475 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:37,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4794 Valid, 21475 Invalid, 1804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 06:08:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69727 states. [2021-11-20 06:08:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69727 to 54825. [2021-11-20 06:08:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54825 states, 49824 states have (on average 1.5409039820166988) internal successors, (76774), 50082 states have internal predecessors, (76774), 3207 states have call successors, (3207), 1536 states have call predecessors, (3207), 1792 states have return successors, (10280), 3462 states have call predecessors, (10280), 3207 states have call successors, (10280) [2021-11-20 06:08:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54825 states to 54825 states and 90261 transitions. [2021-11-20 06:08:41,564 INFO L78 Accepts]: Start accepts. Automaton has 54825 states and 90261 transitions. Word has length 112 [2021-11-20 06:08:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:41,564 INFO L470 AbstractCegarLoop]: Abstraction has 54825 states and 90261 transitions. [2021-11-20 06:08:41,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 54825 states and 90261 transitions. [2021-11-20 06:08:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-20 06:08:41,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:41,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:41,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:08:41,607 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:41,608 INFO L85 PathProgramCache]: Analyzing trace with hash -238456545, now seen corresponding path program 1 times [2021-11-20 06:08:41,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:41,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601567441] [2021-11-20 06:08:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:41,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:08:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 06:08:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 06:08:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 06:08:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 06:08:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:41,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:41,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601567441] [2021-11-20 06:08:41,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601567441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:41,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:41,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:08:41,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356134921] [2021-11-20 06:08:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:41,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:08:41,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:08:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:08:41,999 INFO L87 Difference]: Start difference. First operand 54825 states and 90261 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:08:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:52,500 INFO L93 Difference]: Finished difference Result 184593 states and 299929 transitions. [2021-11-20 06:08:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:08:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-11-20 06:08:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:53,196 INFO L225 Difference]: With dead ends: 184593 [2021-11-20 06:08:53,196 INFO L226 Difference]: Without dead ends: 131905 [2021-11-20 06:08:53,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:08:53,323 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5048 mSDsluCounter, 12607 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17253 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:53,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17253 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 06:08:53,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131905 states.