./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash b51c0cff1313a9afa802665dd86b8903b503d10a2ec17c034f2e12e418dc81cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:53:37,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:53:37,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:53:37,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:53:37,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:53:37,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:53:37,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:53:37,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:53:37,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:53:37,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:53:37,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:53:37,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:53:37,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:53:37,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:53:37,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:53:37,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:53:37,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:53:37,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:53:37,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:53:37,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:53:37,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:53:37,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:53:37,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:53:37,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:53:37,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:53:37,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:53:37,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:53:37,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:53:37,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:53:37,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:53:37,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:53:37,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:53:37,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:53:37,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:53:37,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:53:37,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:53:37,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:53:37,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:53:37,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:53:37,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:53:37,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:53:37,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:53:37,265 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:53:37,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:53:37,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:53:37,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:53:37,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:53:37,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:53:37,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:53:37,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:53:37,273 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:53:37,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:53:37,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:53:37,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:53:37,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:53:37,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:53:37,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:53:37,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:53:37,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:53:37,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:53:37,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:53:37,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:53:37,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:53:37,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:37,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:53:37,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:53:37,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:53:37,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:53:37,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:53:37,279 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:53:37,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:53:37,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:53:37,279 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_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51c0cff1313a9afa802665dd86b8903b503d10a2ec17c034f2e12e418dc81cd [2022-11-02 19:53:37,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:53:37,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:53:37,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:53:37,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:53:37,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:53:37,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c [2022-11-02 19:53:37,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/27f41b69c/d28b4759e2944b40a124e7a7cbe0af6c/FLAG0aa07c92d [2022-11-02 19:53:38,481 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:53:38,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c [2022-11-02 19:53:38,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/27f41b69c/d28b4759e2944b40a124e7a7cbe0af6c/FLAG0aa07c92d [2022-11-02 19:53:38,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/27f41b69c/d28b4759e2944b40a124e7a7cbe0af6c [2022-11-02 19:53:38,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:53:38,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:53:38,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:38,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:53:38,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:53:38,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:38" (1/1) ... [2022-11-02 19:53:38,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f891dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:38, skipping insertion in model container [2022-11-02 19:53:38,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:53:38" (1/1) ... [2022-11-02 19:53:38,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:53:38,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:53:38,990 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_fc9a535e-da30-4f72-9cc6-30b140b7570e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c[1014,1027] [2022-11-02 19:53:39,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:39,420 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:53:39,431 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_fc9a535e-da30-4f72-9cc6-30b140b7570e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c[1014,1027] [2022-11-02 19:53:39,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:53:39,710 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:53:39,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39 WrapperNode [2022-11-02 19:53:39,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:53:39,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:39,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:53:39,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:53:39,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:39,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,281 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2398 [2022-11-02 19:53:40,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:53:40,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:53:40,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:53:40,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:53:40,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:53:40,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:53:40,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:53:40,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:53:40,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (1/1) ... [2022-11-02 19:53:40,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:53:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:40,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:53:40,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:53:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:53:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:53:41,396 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:53:41,398 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:55:48,832 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:55:48,840 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:55:48,840 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:55:48,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:55:48 BoogieIcfgContainer [2022-11-02 19:55:48,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:55:48,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:55:48,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:55:48,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:55:48,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:53:38" (1/3) ... [2022-11-02 19:55:48,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7e1fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:55:48, skipping insertion in model container [2022-11-02 19:55:48,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:53:39" (2/3) ... [2022-11-02 19:55:48,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7e1fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:55:48, skipping insertion in model container [2022-11-02 19:55:48,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:55:48" (3/3) ... [2022-11-02 19:55:48,852 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.3.prop1-func-interl.c [2022-11-02 19:55:48,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:55:48,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:55:48,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:55:48,952 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@153c36d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:55:48,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:55:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:55:48,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:48,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:48,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 19:55:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:48,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558261023] [2022-11-02 19:55:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:48,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:50,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:50,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558261023] [2022-11-02 19:55:50,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558261023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:50,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:50,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:55:50,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350732756] [2022-11-02 19:55:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:50,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:55:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:55:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:55:50,230 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:52,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 19:55:54,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 19:55:54,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:54,928 INFO L93 Difference]: Finished difference Result 225 states and 335 transitions. [2022-11-02 19:55:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:55:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:55:54,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:54,941 INFO L225 Difference]: With dead ends: 225 [2022-11-02 19:55:54,945 INFO L226 Difference]: Without dead ends: 144 [2022-11-02 19:55:54,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:54,952 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 185 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:54,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 332 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 19:55:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-02 19:55:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 81. [2022-11-02 19:55:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4625) internal successors, (117), 80 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:54,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2022-11-02 19:55:54,994 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 11 [2022-11-02 19:55:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:54,994 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2022-11-02 19:55:54,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2022-11-02 19:55:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:55:54,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:54,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:54,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:55:54,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:55:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 19:55:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:54,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612839404] [2022-11-02 19:55:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:55:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612839404] [2022-11-02 19:55:55,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612839404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:55,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:55,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:55:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176114485] [2022-11-02 19:55:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:55:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:55,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:55:55,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:55:55,428 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:55:57,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 19:56:00,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 19:56:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:00,235 INFO L93 Difference]: Finished difference Result 221 states and 322 transitions. [2022-11-02 19:56:00,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:56:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:00,237 INFO L225 Difference]: With dead ends: 221 [2022-11-02 19:56:00,237 INFO L226 Difference]: Without dead ends: 144 [2022-11-02 19:56:00,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:00,239 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 179 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:00,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 332 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 19:56:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-02 19:56:00,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 83. [2022-11-02 19:56:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2022-11-02 19:56:00,251 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 11 [2022-11-02 19:56:00,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:00,251 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2022-11-02 19:56:00,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2022-11-02 19:56:00,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:56:00,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:00,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:00,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:56:00,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:00,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 19:56:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:00,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75217006] [2022-11-02 19:56:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:00,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:00,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75217006] [2022-11-02 19:56:00,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75217006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:00,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:00,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898410069] [2022-11-02 19:56:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:00,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:00,544 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:02,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 19:56:04,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 19:56:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:04,915 INFO L93 Difference]: Finished difference Result 221 states and 321 transitions. [2022-11-02 19:56:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:56:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:04,918 INFO L225 Difference]: With dead ends: 221 [2022-11-02 19:56:04,918 INFO L226 Difference]: Without dead ends: 144 [2022-11-02 19:56:04,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:04,921 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 173 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:04,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 333 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 19:56:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-02 19:56:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2022-11-02 19:56:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2022-11-02 19:56:04,932 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 11 [2022-11-02 19:56:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:04,932 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2022-11-02 19:56:04,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2022-11-02 19:56:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:56:04,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:04,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:04,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:56:04,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 19:56:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:04,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587994849] [2022-11-02 19:56:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:56:05,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:56:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:56:05,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:56:05,349 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:56:05,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 19:56:05,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:56:05,357 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 19:56:05,362 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:56:05,418 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 19:56:05,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:56:05 BoogieIcfgContainer [2022-11-02 19:56:05,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:56:05,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:56:05,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:56:05,438 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:56:05,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:55:48" (3/4) ... [2022-11-02 19:56:05,454 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:56:05,454 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:56:05,455 INFO L158 Benchmark]: Toolchain (without parser) took 146832.84ms. Allocated memory was 102.8MB in the beginning and 937.4MB in the end (delta: 834.7MB). Free memory was 62.4MB in the beginning and 426.1MB in the end (delta: -363.7MB). Peak memory consumption was 469.9MB. Max. memory is 16.1GB. [2022-11-02 19:56:05,455 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 51.4MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:56:05,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1085.65ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 88.2MB in the end (delta: -25.9MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2022-11-02 19:56:05,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 566.93ms. Allocated memory is still 148.9MB. Free memory was 88.2MB in the beginning and 85.4MB in the end (delta: 2.9MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2022-11-02 19:56:05,457 INFO L158 Benchmark]: Boogie Preprocessor took 323.62ms. Allocated memory is still 148.9MB. Free memory was 84.8MB in the beginning and 57.6MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-02 19:56:05,457 INFO L158 Benchmark]: RCFGBuilder took 128236.05ms. Allocated memory was 148.9MB in the beginning and 937.4MB in the end (delta: 788.5MB). Free memory was 57.6MB in the beginning and 322.6MB in the end (delta: -265.0MB). Peak memory consumption was 559.2MB. Max. memory is 16.1GB. [2022-11-02 19:56:05,458 INFO L158 Benchmark]: TraceAbstraction took 16592.21ms. Allocated memory is still 937.4MB. Free memory was 321.6MB in the beginning and 427.1MB in the end (delta: -105.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:56:05,458 INFO L158 Benchmark]: Witness Printer took 16.22ms. Allocated memory is still 937.4MB. Free memory was 427.1MB in the beginning and 426.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:56:05,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 51.4MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1085.65ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 88.2MB in the end (delta: -25.9MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 566.93ms. Allocated memory is still 148.9MB. Free memory was 88.2MB in the beginning and 85.4MB in the end (delta: 2.9MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 323.62ms. Allocated memory is still 148.9MB. Free memory was 84.8MB in the beginning and 57.6MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * RCFGBuilder took 128236.05ms. Allocated memory was 148.9MB in the beginning and 937.4MB in the end (delta: 788.5MB). Free memory was 57.6MB in the beginning and 322.6MB in the end (delta: -265.0MB). Peak memory consumption was 559.2MB. Max. memory is 16.1GB. * TraceAbstraction took 16592.21ms. Allocated memory is still 937.4MB. Free memory was 321.6MB in the beginning and 427.1MB in the end (delta: -105.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 16.22ms. Allocated memory is still 937.4MB. Free memory was 427.1MB in the beginning and 426.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 302, overapproximation of bitwiseAnd at line 298. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_22 = 0; [L39] const SORT_4 var_85 = 1; [L40] const SORT_4 var_86 = 0; [L41] const SORT_2 var_96 = 0; [L42] const SORT_2 var_100 = 1; [L43] const SORT_2 var_124 = 255; [L44] const SORT_2 var_126 = 2; [L45] const SORT_3 var_151 = 0; [L46] const SORT_4 var_320 = 3; [L47] const SORT_2 var_331 = 3; [L49] SORT_1 input_95; [L50] SORT_1 input_97; [L51] SORT_1 input_98; [L52] SORT_1 input_99; [L53] SORT_1 input_106; [L54] SORT_1 input_107; [L55] SORT_1 input_108; [L56] SORT_1 input_109; [L57] SORT_1 input_115; [L58] SORT_1 input_116; [L59] SORT_1 input_117; [L60] SORT_1 input_118; [L61] SORT_1 input_125; [L62] SORT_1 input_127; [L63] SORT_1 input_128; [L64] SORT_1 input_135; [L65] SORT_1 input_136; [L66] SORT_1 input_137; [L67] SORT_1 input_138; [L68] SORT_1 input_139; [L69] SORT_1 input_140; [L70] SORT_1 input_150; [L71] SORT_1 input_158; [L72] SORT_1 input_165; [L73] SORT_1 input_173; [L74] SORT_1 input_175; [L75] SORT_1 input_179; [L76] SORT_1 input_181; [L77] SORT_1 input_190; [L78] SORT_1 input_204; [L79] SORT_1 input_215; [L80] SORT_1 input_217; [L81] SORT_1 input_221; [L82] SORT_1 input_223; [L83] SORT_1 input_232; [L84] SORT_1 input_246; [L85] SORT_1 input_257; [L86] SORT_1 input_259; [L87] SORT_1 input_263; [L88] SORT_1 input_265; [L89] SORT_1 input_274; [L90] SORT_1 input_288; [L92] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L127] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L128] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L129] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L130] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L132] SORT_2 init_7_arg_1 = var_5; [L133] state_6 = init_7_arg_1 [L134] SORT_2 init_9_arg_1 = var_5; [L135] state_8 = init_9_arg_1 [L136] SORT_2 init_11_arg_1 = var_5; [L137] state_10 = init_11_arg_1 [L138] SORT_2 init_13_arg_1 = var_5; [L139] state_12 = init_13_arg_1 [L140] SORT_2 init_15_arg_1 = var_5; [L141] state_14 = init_15_arg_1 [L142] SORT_2 init_17_arg_1 = var_5; [L143] state_16 = init_17_arg_1 [L144] SORT_2 init_19_arg_1 = var_5; [L145] state_18 = init_19_arg_1 [L146] SORT_2 init_21_arg_1 = var_5; [L147] state_20 = init_21_arg_1 [L148] SORT_1 init_24_arg_1 = var_22; [L149] state_23 = init_24_arg_1 [L150] SORT_1 init_26_arg_1 = var_22; [L151] state_25 = init_26_arg_1 [L152] SORT_1 init_28_arg_1 = var_22; [L153] state_27 = init_28_arg_1 [L154] SORT_1 init_30_arg_1 = var_22; [L155] state_29 = init_30_arg_1 [L156] SORT_1 init_32_arg_1 = var_22; [L157] state_31 = init_32_arg_1 [L158] SORT_1 init_34_arg_1 = var_22; [L159] state_33 = init_34_arg_1 [L160] SORT_1 init_36_arg_1 = var_22; [L161] state_35 = init_36_arg_1 [L162] SORT_1 init_38_arg_1 = var_22; [L163] state_37 = init_38_arg_1 [L164] SORT_1 init_40_arg_1 = var_22; [L165] state_39 = init_40_arg_1 [L166] SORT_1 init_42_arg_1 = var_22; [L167] state_41 = init_42_arg_1 [L168] SORT_1 init_44_arg_1 = var_22; [L169] state_43 = init_44_arg_1 [L170] SORT_1 init_46_arg_1 = var_22; [L171] state_45 = init_46_arg_1 [L172] SORT_1 init_48_arg_1 = var_22; [L173] state_47 = init_48_arg_1 [L174] SORT_1 init_50_arg_1 = var_22; [L175] state_49 = init_50_arg_1 [L176] SORT_1 init_52_arg_1 = var_22; [L177] state_51 = init_52_arg_1 [L178] SORT_1 init_54_arg_1 = var_22; [L179] state_53 = init_54_arg_1 [L180] SORT_1 init_56_arg_1 = var_22; [L181] state_55 = init_56_arg_1 [L182] SORT_1 init_58_arg_1 = var_22; [L183] state_57 = init_58_arg_1 [L184] SORT_1 init_60_arg_1 = var_22; [L185] state_59 = init_60_arg_1 [L186] SORT_1 init_62_arg_1 = var_22; [L187] state_61 = init_62_arg_1 [L188] SORT_1 init_64_arg_1 = var_22; [L189] state_63 = init_64_arg_1 [L190] SORT_1 init_66_arg_1 = var_22; [L191] state_65 = init_66_arg_1 [L192] SORT_1 init_68_arg_1 = var_22; [L193] state_67 = init_68_arg_1 [L194] SORT_1 init_70_arg_1 = var_22; [L195] state_69 = init_70_arg_1 [L196] SORT_1 init_72_arg_1 = var_22; [L197] state_71 = init_72_arg_1 [L198] SORT_1 init_74_arg_1 = var_22; [L199] state_73 = init_74_arg_1 [L200] SORT_1 init_76_arg_1 = var_22; [L201] state_75 = init_76_arg_1 [L202] SORT_1 init_78_arg_1 = var_22; [L203] state_77 = init_78_arg_1 [L204] SORT_1 init_80_arg_1 = var_22; [L205] state_79 = init_80_arg_1 [L206] SORT_1 init_82_arg_1 = var_22; [L207] state_81 = init_82_arg_1 [L208] SORT_1 init_84_arg_1 = var_22; [L209] state_83 = init_84_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_96=0] [L212] input_95 = __VERIFIER_nondet_uchar() [L213] input_95 = input_95 & mask_SORT_1 [L214] input_97 = __VERIFIER_nondet_uchar() [L215] input_97 = input_97 & mask_SORT_1 [L216] input_98 = __VERIFIER_nondet_uchar() [L217] input_98 = input_98 & mask_SORT_1 [L218] input_99 = __VERIFIER_nondet_uchar() [L219] input_99 = input_99 & mask_SORT_1 [L220] input_106 = __VERIFIER_nondet_uchar() [L221] input_106 = input_106 & mask_SORT_1 [L222] input_107 = __VERIFIER_nondet_uchar() [L223] input_107 = input_107 & mask_SORT_1 [L224] input_108 = __VERIFIER_nondet_uchar() [L225] input_108 = input_108 & mask_SORT_1 [L226] input_109 = __VERIFIER_nondet_uchar() [L227] input_109 = input_109 & mask_SORT_1 [L228] input_115 = __VERIFIER_nondet_uchar() [L229] input_115 = input_115 & mask_SORT_1 [L230] input_116 = __VERIFIER_nondet_uchar() [L231] input_116 = input_116 & mask_SORT_1 [L232] input_117 = __VERIFIER_nondet_uchar() [L233] input_117 = input_117 & mask_SORT_1 [L234] input_118 = __VERIFIER_nondet_uchar() [L235] input_118 = input_118 & mask_SORT_1 [L236] input_125 = __VERIFIER_nondet_uchar() [L237] input_125 = input_125 & mask_SORT_1 [L238] input_127 = __VERIFIER_nondet_uchar() [L239] input_127 = input_127 & mask_SORT_1 [L240] input_128 = __VERIFIER_nondet_uchar() [L241] input_128 = input_128 & mask_SORT_1 [L242] input_135 = __VERIFIER_nondet_uchar() [L243] input_135 = input_135 & mask_SORT_1 [L244] input_136 = __VERIFIER_nondet_uchar() [L245] input_136 = input_136 & mask_SORT_1 [L246] input_137 = __VERIFIER_nondet_uchar() [L247] input_137 = input_137 & mask_SORT_1 [L248] input_138 = __VERIFIER_nondet_uchar() [L249] input_138 = input_138 & mask_SORT_1 [L250] input_139 = __VERIFIER_nondet_uchar() [L251] input_139 = input_139 & mask_SORT_1 [L252] input_140 = __VERIFIER_nondet_uchar() [L253] input_140 = input_140 & mask_SORT_1 [L254] input_150 = __VERIFIER_nondet_uchar() [L255] input_150 = input_150 & mask_SORT_1 [L256] input_158 = __VERIFIER_nondet_uchar() [L257] input_158 = input_158 & mask_SORT_1 [L258] input_165 = __VERIFIER_nondet_uchar() [L259] input_165 = input_165 & mask_SORT_1 [L260] input_173 = __VERIFIER_nondet_uchar() [L261] input_175 = __VERIFIER_nondet_uchar() [L262] input_179 = __VERIFIER_nondet_uchar() [L263] input_181 = __VERIFIER_nondet_uchar() [L264] input_190 = __VERIFIER_nondet_uchar() [L265] input_204 = __VERIFIER_nondet_uchar() [L266] input_215 = __VERIFIER_nondet_uchar() [L267] input_217 = __VERIFIER_nondet_uchar() [L268] input_221 = __VERIFIER_nondet_uchar() [L269] input_223 = __VERIFIER_nondet_uchar() [L270] input_232 = __VERIFIER_nondet_uchar() [L271] input_246 = __VERIFIER_nondet_uchar() [L272] input_257 = __VERIFIER_nondet_uchar() [L273] input_259 = __VERIFIER_nondet_uchar() [L274] input_263 = __VERIFIER_nondet_uchar() [L275] input_265 = __VERIFIER_nondet_uchar() [L276] input_274 = __VERIFIER_nondet_uchar() [L277] input_288 = __VERIFIER_nondet_uchar() [L280] SORT_1 var_87_arg_0 = state_25; [L281] SORT_4 var_87_arg_1 = var_85; [L282] SORT_4 var_87_arg_2 = var_86; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_108=0, input_109=1, input_115=0, input_116=0, input_117=0, input_118=1, input_125=0, input_127=1, input_128=1, input_135=1, input_136=0, input_137=1, input_138=0, input_139=0, input_140=0, input_150=0, input_158=0, input_165=0, input_173=12, input_175=10, input_179=7, input_181=11, input_190=9, input_204=17, input_215=5, input_217=6, input_221=3, input_223=16, input_232=14, input_246=8, input_257=1, input_259=2, input_263=4, input_265=15, input_274=18, input_288=13, input_95=0, input_97=0, input_98=0, input_99=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_96=0] [L283] EXPR var_87_arg_0 ? var_87_arg_1 : var_87_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_108=0, input_109=1, input_115=0, input_116=0, input_117=0, input_118=1, input_125=0, input_127=1, input_128=1, input_135=1, input_136=0, input_137=1, input_138=0, input_139=0, input_140=0, input_150=0, input_158=0, input_165=0, input_173=12, input_175=10, input_179=7, input_181=11, input_190=9, input_204=17, input_215=5, input_217=6, input_221=3, input_223=16, input_232=14, input_246=8, input_257=1, input_259=2, input_263=4, input_265=15, input_274=18, input_288=13, input_95=0, input_97=0, input_98=0, input_99=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_87_arg_0=0, var_87_arg_0 ? var_87_arg_1 : var_87_arg_2=0, var_87_arg_1=1, var_87_arg_2=0, var_96=0] [L283] SORT_4 var_87 = var_87_arg_0 ? var_87_arg_1 : var_87_arg_2; [L284] SORT_1 var_88_arg_0 = state_45; [L285] SORT_4 var_88_arg_1 = var_85; [L286] SORT_4 var_88_arg_2 = var_86; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_108=0, input_109=1, input_115=0, input_116=0, input_117=0, input_118=1, input_125=0, input_127=1, input_128=1, input_135=1, input_136=0, input_137=1, input_138=0, input_139=0, input_140=0, input_150=0, input_158=0, input_165=0, input_173=12, input_175=10, input_179=7, input_181=11, input_190=9, input_204=17, input_215=5, input_217=6, input_221=3, input_223=16, input_232=14, input_246=8, input_257=1, input_259=2, input_263=4, input_265=15, input_274=18, input_288=13, input_95=0, input_97=0, input_98=0, input_99=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_96=0] [L287] EXPR var_88_arg_0 ? var_88_arg_1 : var_88_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_108=0, input_109=1, input_115=0, input_116=0, input_117=0, input_118=1, input_125=0, input_127=1, input_128=1, input_135=1, input_136=0, input_137=1, input_138=0, input_139=0, input_140=0, input_150=0, input_158=0, input_165=0, input_173=12, input_175=10, input_179=7, input_181=11, input_190=9, input_204=17, input_215=5, input_217=6, input_221=3, input_223=16, input_232=14, input_246=8, input_257=1, input_259=2, input_263=4, input_265=15, input_274=18, input_288=13, input_95=0, input_97=0, input_98=0, input_99=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88_arg_0=0, var_88_arg_0 ? var_88_arg_1 : var_88_arg_2=0, var_88_arg_1=1, var_88_arg_2=0, var_96=0] [L287] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L288] SORT_4 var_89_arg_0 = var_87; [L289] SORT_4 var_89_arg_1 = var_88; [L290] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L291] SORT_1 var_90_arg_0 = state_65; [L292] SORT_4 var_90_arg_1 = var_85; [L293] SORT_4 var_90_arg_2 = var_86; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_108=0, input_109=1, input_115=0, input_116=0, input_117=0, input_118=1, input_125=0, input_127=1, input_128=1, input_135=1, input_136=0, input_137=1, input_138=0, input_139=0, input_140=0, input_150=0, input_158=0, input_165=0, input_173=12, input_175=10, input_179=7, input_181=11, input_190=9, input_204=17, input_215=5, input_217=6, input_221=3, input_223=16, input_232=14, input_246=8, input_257=1, input_259=2, input_263=4, input_265=15, input_274=18, input_288=13, input_95=0, input_97=0, input_98=0, input_99=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_89=0, var_89_arg_0=0, var_89_arg_1=0, var_90_arg_0=0, var_90_arg_1=1, var_90_arg_2=0, var_96=0] [L294] EXPR var_90_arg_0 ? var_90_arg_1 : var_90_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_106=1, input_107=1, input_108=0, input_109=1, input_115=0, input_116=0, input_117=0, input_118=1, input_125=0, input_127=1, input_128=1, input_135=1, input_136=0, input_137=1, input_138=0, input_139=0, input_140=0, input_150=0, input_158=0, input_165=0, input_173=12, input_175=10, input_179=7, input_181=11, input_190=9, input_204=17, input_215=5, input_217=6, input_221=3, input_223=16, input_232=14, input_246=8, input_257=1, input_259=2, input_263=4, input_265=15, input_274=18, input_288=13, input_95=0, input_97=0, input_98=0, input_99=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_89=0, var_89_arg_0=0, var_89_arg_1=0, var_90_arg_0=0, var_90_arg_0 ? var_90_arg_1 : var_90_arg_2=0, var_90_arg_1=1, var_90_arg_2=0, var_96=0] [L294] SORT_4 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L295] SORT_4 var_91_arg_0 = var_89; [L296] SORT_4 var_91_arg_1 = var_90; [L297] SORT_4 var_91 = var_91_arg_0 + var_91_arg_1; [L298] var_91 = var_91 & mask_SORT_4 [L299] SORT_4 var_92_arg_0 = var_91; [L300] SORT_4 var_92_arg_1 = var_85; [L301] SORT_1 var_92 = var_92_arg_0 <= var_92_arg_1; [L302] SORT_1 var_93_arg_0 = ~state_83; [L303] var_93_arg_0 = var_93_arg_0 & mask_SORT_1 [L304] SORT_1 var_93_arg_1 = ~var_92; [L305] var_93_arg_1 = var_93_arg_1 & mask_SORT_1 [L306] SORT_1 var_93 = var_93_arg_0 & var_93_arg_1; [L307] var_93 = var_93 & mask_SORT_1 [L308] SORT_1 bad_94_arg_0 = var_93; [L309] CALL __VERIFIER_assert(!(bad_94_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 537 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 537 mSDsluCounter, 997 SdHoareTripleChecker+Invalid, 13.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 661 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 336 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 183 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 19:56:05,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash b51c0cff1313a9afa802665dd86b8903b503d10a2ec17c034f2e12e418dc81cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:56:07,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:56:07,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:56:08,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:56:08,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:56:08,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:56:08,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:56:08,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:56:08,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:56:08,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:56:08,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:56:08,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:56:08,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:56:08,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:56:08,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:56:08,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:56:08,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:56:08,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:56:08,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:56:08,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:56:08,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:56:08,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:56:08,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:56:08,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:56:08,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:56:08,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:56:08,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:56:08,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:56:08,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:56:08,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:56:08,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:56:08,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:56:08,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:56:08,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:56:08,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:56:08,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:56:08,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:56:08,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:56:08,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:56:08,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:56:08,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:56:08,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 19:56:08,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:56:08,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:56:08,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:56:08,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:56:08,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:56:08,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:56:08,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:56:08,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:56:08,120 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:56:08,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:56:08,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:56:08,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:56:08,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:56:08,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:56:08,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:56:08,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:56:08,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:56:08,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:56:08,122 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:56:08,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:56:08,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:56:08,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:56:08,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:56:08,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:08,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:56:08,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:56:08,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:56:08,125 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:56:08,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:56:08,126 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:56:08,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:56:08,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:56:08,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:56:08,127 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51c0cff1313a9afa802665dd86b8903b503d10a2ec17c034f2e12e418dc81cd [2022-11-02 19:56:08,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:56:08,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:56:08,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:56:08,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:56:08,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:56:08,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c [2022-11-02 19:56:08,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/14ca15348/49bfd4f41972446e9f9e50ba1858a20b/FLAGfd8856dbc [2022-11-02 19:56:09,440 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:56:09,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c [2022-11-02 19:56:09,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/14ca15348/49bfd4f41972446e9f9e50ba1858a20b/FLAGfd8856dbc [2022-11-02 19:56:09,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/data/14ca15348/49bfd4f41972446e9f9e50ba1858a20b [2022-11-02 19:56:09,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:56:09,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:56:09,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:09,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:56:09,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:56:09,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:09" (1/1) ... [2022-11-02 19:56:09,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5cc001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:09, skipping insertion in model container [2022-11-02 19:56:09,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:09" (1/1) ... [2022-11-02 19:56:09,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:56:09,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:56:09,930 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_fc9a535e-da30-4f72-9cc6-30b140b7570e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c[1014,1027] [2022-11-02 19:56:10,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:10,459 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:56:10,471 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_fc9a535e-da30-4f72-9cc6-30b140b7570e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.3.prop1-func-interl.c[1014,1027] [2022-11-02 19:56:10,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:10,640 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:56:10,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10 WrapperNode [2022-11-02 19:56:10,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:10,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:10,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:56:10,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:56:10,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,860 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2398 [2022-11-02 19:56:10,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:10,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:56:10,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:56:10,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:56:10,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:10,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:56:10,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:56:10,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:56:10,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:56:10,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (1/1) ... [2022-11-02 19:56:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:11,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:11,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:56:11,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:56:11,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:56:11,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:56:11,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:56:11,787 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:56:14,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:56:14,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:56:14,529 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:56:14,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:14 BoogieIcfgContainer [2022-11-02 19:56:14,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:56:14,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:56:14,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:56:14,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:56:14,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:56:09" (1/3) ... [2022-11-02 19:56:14,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c900d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:14, skipping insertion in model container [2022-11-02 19:56:14,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:10" (2/3) ... [2022-11-02 19:56:14,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280c900d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:14, skipping insertion in model container [2022-11-02 19:56:14,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:14" (3/3) ... [2022-11-02 19:56:14,545 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.3.prop1-func-interl.c [2022-11-02 19:56:14,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:56:14,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:56:14,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:56:14,679 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b9cea96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:56:14,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:56:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:56:14,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:14,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:14,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:14,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 19:56:14,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:14,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652800638] [2022-11-02 19:56:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:14,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:14,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:14,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:14,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:56:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:15,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:15,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:15,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:15,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:15,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652800638] [2022-11-02 19:56:15,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652800638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:15,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:15,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356690916] [2022-11-02 19:56:15,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:15,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:15,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:15,453 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:15,862 INFO L93 Difference]: Finished difference Result 313 states and 467 transitions. [2022-11-02 19:56:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:15,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:56:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:15,877 INFO L225 Difference]: With dead ends: 313 [2022-11-02 19:56:15,877 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 19:56:15,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:15,884 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 331 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:15,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 439 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 19:56:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 81. [2022-11-02 19:56:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4625) internal successors, (117), 80 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2022-11-02 19:56:15,926 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 11 [2022-11-02 19:56:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:15,927 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2022-11-02 19:56:15,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2022-11-02 19:56:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:56:15,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:15,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:15,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:16,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:16,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 19:56:16,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:16,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305843994] [2022-11-02 19:56:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:16,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:16,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:16,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:16,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:56:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:16,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:16,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:16,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:16,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305843994] [2022-11-02 19:56:16,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305843994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:16,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:16,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:16,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474787609] [2022-11-02 19:56:16,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:16,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:16,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:16,723 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:17,106 INFO L93 Difference]: Finished difference Result 309 states and 451 transitions. [2022-11-02 19:56:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:17,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:56:17,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:17,111 INFO L225 Difference]: With dead ends: 309 [2022-11-02 19:56:17,111 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 19:56:17,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:17,113 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 325 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:17,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 438 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 19:56:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 83. [2022-11-02 19:56:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2022-11-02 19:56:17,123 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 11 [2022-11-02 19:56:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:17,123 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2022-11-02 19:56:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2022-11-02 19:56:17,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:56:17,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:17,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:17,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:17,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:17,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:17,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 19:56:17,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:17,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414308172] [2022-11-02 19:56:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:17,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:17,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:17,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:17,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:56:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:17,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:17,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:17,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:17,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:17,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414308172] [2022-11-02 19:56:17,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414308172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:17,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:17,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:17,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46651703] [2022-11-02 19:56:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:17,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:17,904 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:18,178 INFO L93 Difference]: Finished difference Result 309 states and 450 transitions. [2022-11-02 19:56:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:18,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:56:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:18,185 INFO L225 Difference]: With dead ends: 309 [2022-11-02 19:56:18,185 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 19:56:18,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:18,186 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 319 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:18,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 440 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 19:56:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 85. [2022-11-02 19:56:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2022-11-02 19:56:18,196 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 11 [2022-11-02 19:56:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:18,197 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2022-11-02 19:56:18,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2022-11-02 19:56:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:56:18,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:18,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:18,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:18,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 19:56:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:18,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144526610] [2022-11-02 19:56:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:18,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:18,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:18,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:18,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:56:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:18,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 19:56:18,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:19,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:19,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:19,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144526610] [2022-11-02 19:56:19,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144526610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:19,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:19,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 19:56:19,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645304875] [2022-11-02 19:56:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:19,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:56:19,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:56:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:56:19,292 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:20,879 INFO L93 Difference]: Finished difference Result 333 states and 481 transitions. [2022-11-02 19:56:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 19:56:20,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:56:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:20,882 INFO L225 Difference]: With dead ends: 333 [2022-11-02 19:56:20,882 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 19:56:20,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:56:20,884 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 982 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:20,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1051 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:56:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 19:56:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 91. [2022-11-02 19:56:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 90 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2022-11-02 19:56:20,894 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 11 [2022-11-02 19:56:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:20,894 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2022-11-02 19:56:20,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2022-11-02 19:56:20,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:20,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:20,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:20,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:21,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:21,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:21,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1941024301, now seen corresponding path program 1 times [2022-11-02 19:56:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:21,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776443919] [2022-11-02 19:56:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:21,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:21,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:21,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:56:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:56:22,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:22,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:22,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776443919] [2022-11-02 19:56:22,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776443919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:22,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:22,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:22,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248658158] [2022-11-02 19:56:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:22,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:22,845 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:23,069 INFO L93 Difference]: Finished difference Result 220 states and 318 transitions. [2022-11-02 19:56:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:56:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:23,072 INFO L225 Difference]: With dead ends: 220 [2022-11-02 19:56:23,072 INFO L226 Difference]: Without dead ends: 137 [2022-11-02 19:56:23,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:56:23,074 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 80 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:23,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 540 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-02 19:56:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-02 19:56:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-02 19:56:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4411764705882353) internal successors, (196), 136 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 196 transitions. [2022-11-02 19:56:23,084 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 196 transitions. Word has length 86 [2022-11-02 19:56:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:23,085 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 196 transitions. [2022-11-02 19:56:23,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:23,085 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 196 transitions. [2022-11-02 19:56:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:23,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:23,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:23,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:23,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:23,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2013410859, now seen corresponding path program 1 times [2022-11-02 19:56:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:23,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951057303] [2022-11-02 19:56:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:23,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:23,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:23,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 19:56:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:24,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:56:24,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:25,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:25,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:25,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951057303] [2022-11-02 19:56:25,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951057303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:25,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:25,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119025405] [2022-11-02 19:56:25,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:25,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:25,053 INFO L87 Difference]: Start difference. First operand 137 states and 196 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:25,387 INFO L93 Difference]: Finished difference Result 363 states and 527 transitions. [2022-11-02 19:56:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:25,392 INFO L225 Difference]: With dead ends: 363 [2022-11-02 19:56:25,392 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 19:56:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:25,393 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 171 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:25,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 417 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 19:56:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 187. [2022-11-02 19:56:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.4516129032258065) internal successors, (270), 186 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 270 transitions. [2022-11-02 19:56:25,404 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 270 transitions. Word has length 86 [2022-11-02 19:56:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:25,405 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 270 transitions. [2022-11-02 19:56:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 270 transitions. [2022-11-02 19:56:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:25,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:25,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:25,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:25,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:25,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1858854611, now seen corresponding path program 1 times [2022-11-02 19:56:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:25,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643638069] [2022-11-02 19:56:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:25,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:25,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:25,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:56:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:26,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:56:26,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:27,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:27,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:27,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643638069] [2022-11-02 19:56:27,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643638069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:27,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:27,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691096865] [2022-11-02 19:56:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:27,132 INFO L87 Difference]: Start difference. First operand 187 states and 270 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:27,469 INFO L93 Difference]: Finished difference Result 363 states and 526 transitions. [2022-11-02 19:56:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:27,474 INFO L225 Difference]: With dead ends: 363 [2022-11-02 19:56:27,474 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 19:56:27,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:27,475 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 160 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:27,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 416 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 19:56:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 191. [2022-11-02 19:56:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4473684210526316) internal successors, (275), 190 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 275 transitions. [2022-11-02 19:56:27,485 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 275 transitions. Word has length 86 [2022-11-02 19:56:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:27,485 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 275 transitions. [2022-11-02 19:56:27,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 275 transitions. [2022-11-02 19:56:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:27,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:27,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:27,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:27,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:27,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash 847764783, now seen corresponding path program 1 times [2022-11-02 19:56:27,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:27,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692696380] [2022-11-02 19:56:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:27,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:27,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:27,692 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:27,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 19:56:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:56:28,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:29,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:29,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:29,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692696380] [2022-11-02 19:56:29,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692696380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:29,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:29,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:56:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003768429] [2022-11-02 19:56:29,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:29,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:56:29,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:29,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:56:29,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:29,144 INFO L87 Difference]: Start difference. First operand 191 states and 275 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:29,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:29,633 INFO L93 Difference]: Finished difference Result 358 states and 518 transitions. [2022-11-02 19:56:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:56:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:29,638 INFO L225 Difference]: With dead ends: 358 [2022-11-02 19:56:29,639 INFO L226 Difference]: Without dead ends: 275 [2022-11-02 19:56:29,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:56:29,640 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 256 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:29,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 480 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:56:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-02 19:56:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 193. [2022-11-02 19:56:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.4427083333333333) internal successors, (277), 192 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 277 transitions. [2022-11-02 19:56:29,665 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 277 transitions. Word has length 86 [2022-11-02 19:56:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:29,669 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 277 transitions. [2022-11-02 19:56:29,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 277 transitions. [2022-11-02 19:56:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:29,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:29,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:29,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:29,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:29,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2127628461, now seen corresponding path program 1 times [2022-11-02 19:56:29,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:29,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388181309] [2022-11-02 19:56:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:29,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:29,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:29,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:56:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:30,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:56:30,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:31,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:31,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388181309] [2022-11-02 19:56:31,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388181309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:31,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:31,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:31,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151386620] [2022-11-02 19:56:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:31,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:31,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:31,337 INFO L87 Difference]: Start difference. First operand 193 states and 277 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:31,661 INFO L93 Difference]: Finished difference Result 363 states and 524 transitions. [2022-11-02 19:56:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:56:31,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:31,664 INFO L225 Difference]: With dead ends: 363 [2022-11-02 19:56:31,664 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 19:56:31,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:31,666 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 147 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:31,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:56:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 19:56:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 195. [2022-11-02 19:56:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4381443298969072) internal successors, (279), 194 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 279 transitions. [2022-11-02 19:56:31,677 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 279 transitions. Word has length 86 [2022-11-02 19:56:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:31,677 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 279 transitions. [2022-11-02 19:56:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 279 transitions. [2022-11-02 19:56:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:31,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:31,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:31,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:31,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:31,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1540822447, now seen corresponding path program 1 times [2022-11-02 19:56:31,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:31,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396562631] [2022-11-02 19:56:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:31,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:31,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:31,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:31,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 19:56:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:32,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:56:32,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:33,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:34,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:34,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396562631] [2022-11-02 19:56:34,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396562631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:34,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:56:34,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 19:56:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719598605] [2022-11-02 19:56:34,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:34,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:56:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:56:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:56:34,462 INFO L87 Difference]: Start difference. First operand 195 states and 279 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:34,891 INFO L93 Difference]: Finished difference Result 323 states and 462 transitions. [2022-11-02 19:56:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:34,892 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:34,894 INFO L225 Difference]: With dead ends: 323 [2022-11-02 19:56:34,894 INFO L226 Difference]: Without dead ends: 240 [2022-11-02 19:56:34,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:56:34,896 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 209 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:34,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 869 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2022-11-02 19:56:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-02 19:56:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-02 19:56:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.4225941422594142) internal successors, (340), 239 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 340 transitions. [2022-11-02 19:56:34,917 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 340 transitions. Word has length 86 [2022-11-02 19:56:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:34,919 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 340 transitions. [2022-11-02 19:56:34,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 340 transitions. [2022-11-02 19:56:34,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:34,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:34,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:34,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:35,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:35,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 731475821, now seen corresponding path program 1 times [2022-11-02 19:56:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:35,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001694499] [2022-11-02 19:56:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:35,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:35,134 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:35,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:56:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:36,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:56:36,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:36,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:37,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:37,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001694499] [2022-11-02 19:56:37,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001694499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:37,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:56:37,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 19:56:37,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191616117] [2022-11-02 19:56:37,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:37,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:56:37,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:56:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:56:37,604 INFO L87 Difference]: Start difference. First operand 240 states and 340 transitions. Second operand has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:37,920 INFO L93 Difference]: Finished difference Result 466 states and 660 transitions. [2022-11-02 19:56:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:56:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:37,923 INFO L225 Difference]: With dead ends: 466 [2022-11-02 19:56:37,927 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 19:56:37,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:56:37,929 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 381 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:37,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1155 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-02 19:56:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 19:56:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 318. [2022-11-02 19:56:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.3974763406940063) internal successors, (443), 317 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2022-11-02 19:56:37,945 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 86 [2022-11-02 19:56:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:37,945 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2022-11-02 19:56:37,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.375) internal successors, (166), 16 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2022-11-02 19:56:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:37,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:37,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:37,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:38,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:38,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash 788734123, now seen corresponding path program 1 times [2022-11-02 19:56:38,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:38,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705947340] [2022-11-02 19:56:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:38,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:38,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:38,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:38,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 19:56:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:39,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:56:39,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:39,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:40,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:40,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705947340] [2022-11-02 19:56:40,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705947340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:40,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:56:40,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 19:56:40,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305937969] [2022-11-02 19:56:40,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:40,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:56:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:56:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:56:40,826 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:41,094 INFO L93 Difference]: Finished difference Result 588 states and 816 transitions. [2022-11-02 19:56:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:56:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:41,098 INFO L225 Difference]: With dead ends: 588 [2022-11-02 19:56:41,099 INFO L226 Difference]: Without dead ends: 505 [2022-11-02 19:56:41,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:56:41,100 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 245 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:41,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1406 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-02 19:56:41,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-02 19:56:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 446. [2022-11-02 19:56:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.3640449438202247) internal successors, (607), 445 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 607 transitions. [2022-11-02 19:56:41,124 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 607 transitions. Word has length 86 [2022-11-02 19:56:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:41,124 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 607 transitions. [2022-11-02 19:56:41,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.5) internal successors, (168), 16 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 607 transitions. [2022-11-02 19:56:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:41,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:41,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:41,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:41,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:41,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash -55271379, now seen corresponding path program 1 times [2022-11-02 19:56:41,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:41,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929295392] [2022-11-02 19:56:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:41,354 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:41,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:56:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:42,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 19:56:42,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:44,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:44,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:56:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:54,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:54,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929295392] [2022-11-02 19:56:54,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929295392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:56:54,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:56:54,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 19:56:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445758796] [2022-11-02 19:56:54,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:56:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 19:56:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 19:56:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=431, Unknown=2, NotChecked=0, Total=552 [2022-11-02 19:56:54,013 INFO L87 Difference]: Start difference. First operand 446 states and 607 transitions. Second operand has 24 states, 24 states have (on average 7.083333333333333) internal successors, (170), 24 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:54,473 INFO L93 Difference]: Finished difference Result 852 states and 1159 transitions. [2022-11-02 19:56:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:56:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.083333333333333) internal successors, (170), 24 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:56:54,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:54,479 INFO L225 Difference]: With dead ends: 852 [2022-11-02 19:56:54,480 INFO L226 Difference]: Without dead ends: 850 [2022-11-02 19:56:54,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=135, Invalid=513, Unknown=2, NotChecked=0, Total=650 [2022-11-02 19:56:54,481 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 392 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:54,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1791 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 55 Unchecked, 0.0s Time] [2022-11-02 19:56:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-02 19:56:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 836. [2022-11-02 19:56:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.3652694610778444) internal successors, (1140), 835 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1140 transitions. [2022-11-02 19:56:54,517 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1140 transitions. Word has length 86 [2022-11-02 19:56:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:54,519 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1140 transitions. [2022-11-02 19:56:54,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.083333333333333) internal successors, (170), 24 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:54,519 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1140 transitions. [2022-11-02 19:56:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:56:54,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:54,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:54,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:54,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:54,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 297817003, now seen corresponding path program 1 times [2022-11-02 19:56:54,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:54,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113534737] [2022-11-02 19:56:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:54,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:54,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:54,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:54,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 19:56:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:55,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 19:56:55,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:57,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:57:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:02,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113534737] [2022-11-02 19:57:02,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113534737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:57:02,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:57:02,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 19:57:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648535211] [2022-11-02 19:57:02,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:57:02,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:57:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:02,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:57:02,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:02,129 INFO L87 Difference]: Start difference. First operand 836 states and 1140 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:02,431 INFO L93 Difference]: Finished difference Result 1616 states and 2201 transitions. [2022-11-02 19:57:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:57:02,431 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:57:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:02,436 INFO L225 Difference]: With dead ends: 1616 [2022-11-02 19:57:02,437 INFO L226 Difference]: Without dead ends: 1614 [2022-11-02 19:57:02,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:57:02,439 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 293 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:02,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-11-02 19:57:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-11-02 19:57:02,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1600. [2022-11-02 19:57:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1599 states have (on average 1.3646028767979987) internal successors, (2182), 1599 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2182 transitions. [2022-11-02 19:57:02,527 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2182 transitions. Word has length 86 [2022-11-02 19:57:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:02,527 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2182 transitions. [2022-11-02 19:57:02,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2182 transitions. [2022-11-02 19:57:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:57:02,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:02,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:02,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:02,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:02,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:02,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:02,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1507621331, now seen corresponding path program 1 times [2022-11-02 19:57:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:02,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136651039] [2022-11-02 19:57:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:02,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:02,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:02,758 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:02,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:57:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:03,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 19:57:03,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:05,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:57:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:12,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:12,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136651039] [2022-11-02 19:57:12,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136651039] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:57:12,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:57:12,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 19:57:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798759645] [2022-11-02 19:57:12,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:57:12,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:57:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:57:12,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:12,606 INFO L87 Difference]: Start difference. First operand 1600 states and 2182 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:13,012 INFO L93 Difference]: Finished difference Result 3152 states and 4297 transitions. [2022-11-02 19:57:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:57:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:57:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:13,022 INFO L225 Difference]: With dead ends: 3152 [2022-11-02 19:57:13,023 INFO L226 Difference]: Without dead ends: 3150 [2022-11-02 19:57:13,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:57:13,025 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 333 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:13,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1154 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-11-02 19:57:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-11-02 19:57:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3136. [2022-11-02 19:57:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 3135 states have (on average 1.3645933014354068) internal successors, (4278), 3135 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4278 transitions. [2022-11-02 19:57:13,180 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4278 transitions. Word has length 86 [2022-11-02 19:57:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:13,181 INFO L495 AbstractCegarLoop]: Abstraction has 3136 states and 4278 transitions. [2022-11-02 19:57:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4278 transitions. [2022-11-02 19:57:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:57:13,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:13,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:13,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:13,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:13,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash -848089809, now seen corresponding path program 1 times [2022-11-02 19:57:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030551783] [2022-11-02 19:57:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:13,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:13,405 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:13,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 19:57:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:14,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 19:57:14,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:16,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:57:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:21,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030551783] [2022-11-02 19:57:21,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030551783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:57:21,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:57:21,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 19:57:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372142410] [2022-11-02 19:57:21,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:57:21,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 19:57:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 19:57:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 19:57:21,419 INFO L87 Difference]: Start difference. First operand 3136 states and 4278 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:21,881 INFO L93 Difference]: Finished difference Result 4596 states and 6183 transitions. [2022-11-02 19:57:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:57:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:57:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:21,898 INFO L225 Difference]: With dead ends: 4596 [2022-11-02 19:57:21,898 INFO L226 Difference]: Without dead ends: 4594 [2022-11-02 19:57:21,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 19:57:21,900 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 300 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:21,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1248 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-02 19:57:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2022-11-02 19:57:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4580. [2022-11-02 19:57:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4579 states have (on average 1.346145446604062) internal successors, (6164), 4579 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 6164 transitions. [2022-11-02 19:57:22,224 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 6164 transitions. Word has length 86 [2022-11-02 19:57:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:22,225 INFO L495 AbstractCegarLoop]: Abstraction has 4580 states and 6164 transitions. [2022-11-02 19:57:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 6164 transitions. [2022-11-02 19:57:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:57:22,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:22,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:22,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:22,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:22,451 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:22,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1950833361, now seen corresponding path program 1 times [2022-11-02 19:57:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:22,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985411706] [2022-11-02 19:57:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:22,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:22,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:22,455 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:22,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:57:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:23,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:57:23,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:23,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:23,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:23,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985411706] [2022-11-02 19:57:23,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985411706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:23,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:23,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357000666] [2022-11-02 19:57:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:23,615 INFO L87 Difference]: Start difference. First operand 4580 states and 6164 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:24,346 INFO L93 Difference]: Finished difference Result 7577 states and 9869 transitions. [2022-11-02 19:57:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:57:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-02 19:57:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:24,368 INFO L225 Difference]: With dead ends: 7577 [2022-11-02 19:57:24,368 INFO L226 Difference]: Without dead ends: 6705 [2022-11-02 19:57:24,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:57:24,371 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 109 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:24,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 891 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 21 Unchecked, 0.4s Time] [2022-11-02 19:57:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6705 states. [2022-11-02 19:57:24,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6705 to 4580. [2022-11-02 19:57:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4579 states have (on average 1.3391570211836645) internal successors, (6132), 4579 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 6132 transitions. [2022-11-02 19:57:24,684 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 6132 transitions. Word has length 86 [2022-11-02 19:57:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:24,685 INFO L495 AbstractCegarLoop]: Abstraction has 4580 states and 6132 transitions. [2022-11-02 19:57:24,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 6132 transitions. [2022-11-02 19:57:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-02 19:57:24,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:24,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:57:24,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:24,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1810284751, now seen corresponding path program 1 times [2022-11-02 19:57:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:24,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805062563] [2022-11-02 19:57:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:24,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:24,912 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:24,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc9a535e-da30-4f72-9cc6-30b140b7570e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 19:57:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:25,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 19:57:25,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:27,600 INFO L328 TraceCheckSpWp]: Computing backward predicates...