./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:08:48,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:08:48,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:08:48,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:08:48,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:08:48,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:08:48,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:08:48,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:08:48,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:08:48,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:08:48,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:08:48,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:08:48,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:08:48,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:08:48,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:08:48,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:08:48,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:08:48,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:08:48,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:08:48,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:08:48,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:08:48,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:08:48,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:08:48,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:08:48,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:08:48,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:08:48,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:08:48,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:08:48,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:08:48,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:08:48,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:08:48,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:08:48,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:08:48,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:08:48,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:08:48,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:08:48,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:08:48,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:08:48,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:08:48,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:08:48,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:08:48,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:08:48,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:08:48,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:08:48,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:08:48,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:08:48,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:08:48,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:08:48,633 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:08:48,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:08:48,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:08:48,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:08:48,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:08:48,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:08:48,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:08:48,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:08:48,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:08:48,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:08:48,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:08:48,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:08:48,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:08:48,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:08:48,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:08:48,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:08:48,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:08:48,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:08:48,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:08:48,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:08:48,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:08:48,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:08:48,640 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:08:48,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:08:48,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:08:48,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:08:48,643 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_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ed16a2a74d5e33f66ab9b575b27ed24f9a6964adc1478fcc08a5f7b11595b14 [2021-11-23 14:08:48,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:08:49,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:08:49,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:08:49,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:08:49,016 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:08:49,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2021-11-23 14:08:49,141 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/data/d9c46faa7/554f96c50a074910b73a6c100a45306a/FLAG9ab5f50fa [2021-11-23 14:08:49,957 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:08:49,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c [2021-11-23 14:08:50,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/data/d9c46faa7/554f96c50a074910b73a6c100a45306a/FLAG9ab5f50fa [2021-11-23 14:08:50,064 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/data/d9c46faa7/554f96c50a074910b73a6c100a45306a [2021-11-23 14:08:50,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:08:50,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:08:50,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:08:50,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:08:50,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:08:50,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:50" (1/1) ... [2021-11-23 14:08:50,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1873d7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:50, skipping insertion in model container [2021-11-23 14:08:50,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:50" (1/1) ... [2021-11-23 14:08:50,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:08:50,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:08:50,553 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_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2021-11-23 14:08:50,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:08:50,941 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:08:50,972 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_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/sv-benchmarks/c/product-lines/email_spec0_product35.cil.c[5573,5586] [2021-11-23 14:08:51,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:08:51,177 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:08:51,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51 WrapperNode [2021-11-23 14:08:51,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:08:51,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:08:51,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:08:51,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:08:51,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,461 INFO L137 Inliner]: procedures = 137, calls = 246, calls flagged for inlining = 151, calls inlined = 468, statements flattened = 7218 [2021-11-23 14:08:51,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:08:51,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:08:51,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:08:51,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:08:51,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:08:51,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:08:51,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:08:51,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:08:51,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (1/1) ... [2021-11-23 14:08:51,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:08:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:08:51,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:08:51,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:08:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 14:08:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:08:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:08:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:08:51,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:08:52,282 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:08:52,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:08:55,547 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:08:55,587 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:08:55,588 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 14:08:55,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:55 BoogieIcfgContainer [2021-11-23 14:08:55,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:08:55,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:08:55,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:08:55,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:08:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:50" (1/3) ... [2021-11-23 14:08:55,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6048b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:55, skipping insertion in model container [2021-11-23 14:08:55,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:51" (2/3) ... [2021-11-23 14:08:55,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6048b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:55, skipping insertion in model container [2021-11-23 14:08:55,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:55" (3/3) ... [2021-11-23 14:08:55,607 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product35.cil.c [2021-11-23 14:08:55,617 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:08:55,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 14:08:55,703 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:08:55,714 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 14:08:55,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 14:08:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 1445 states, 1438 states have (on average 1.6592489568845619) internal successors, (2386), 1444 states have internal predecessors, (2386), 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) [2021-11-23 14:08:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 14:08:55,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:08:55,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:08:55,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:08:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:08:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1916715574, now seen corresponding path program 1 times [2021-11-23 14:08:55,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:08:55,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305681658] [2021-11-23 14:08:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:08:55,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:08:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:08:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:08:56,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:08:56,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305681658] [2021-11-23 14:08:56,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305681658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:08:56,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:08:56,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:08:56,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160072892] [2021-11-23 14:08:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:08:56,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:08:56,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:08:56,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:08:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:08:56,338 INFO L87 Difference]: Start difference. First operand has 1445 states, 1438 states have (on average 1.6592489568845619) internal successors, (2386), 1444 states have internal predecessors, (2386), 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 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-23 14:08:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:08:56,757 INFO L93 Difference]: Finished difference Result 4282 states and 7082 transitions. [2021-11-23 14:08:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:08:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-23 14:08:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:08:56,799 INFO L225 Difference]: With dead ends: 4282 [2021-11-23 14:08:56,799 INFO L226 Difference]: Without dead ends: 2667 [2021-11-23 14:08:56,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:08:56,815 INFO L933 BasicCegarLoop]: 4703 mSDtfsCounter, 2347 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:08:56,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 7045 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:08:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2021-11-23 14:08:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 1344. [2021-11-23 14:08:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1338 states have (on average 1.6674140508221225) internal successors, (2231), 1343 states have internal predecessors, (2231), 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) [2021-11-23 14:08:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2231 transitions. [2021-11-23 14:08:56,993 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2231 transitions. Word has length 79 [2021-11-23 14:08:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:08:56,994 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 2231 transitions. [2021-11-23 14:08:56,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-23 14:08:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2231 transitions. [2021-11-23 14:08:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 14:08:57,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:08:57,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:08:57,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:08:57,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:08:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:08:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2037325695, now seen corresponding path program 1 times [2021-11-23 14:08:57,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:08:57,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031783805] [2021-11-23 14:08:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:08:57,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:08:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:08:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:08:57,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:08:57,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031783805] [2021-11-23 14:08:57,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031783805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:08:57,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:08:57,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:08:57,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133606043] [2021-11-23 14:08:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:08:57,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:08:57,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:08:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:08:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:08:57,204 INFO L87 Difference]: Start difference. First operand 1344 states and 2231 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-11-23 14:08:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:08:57,672 INFO L93 Difference]: Finished difference Result 3973 states and 6601 transitions. [2021-11-23 14:08:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:08:57,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 81 [2021-11-23 14:08:57,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:08:57,694 INFO L225 Difference]: With dead ends: 3973 [2021-11-23 14:08:57,694 INFO L226 Difference]: Without dead ends: 2652 [2021-11-23 14:08:57,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:08:57,699 INFO L933 BasicCegarLoop]: 4370 mSDtfsCounter, 4416 mSDsluCounter, 6547 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4416 SdHoareTripleChecker+Valid, 10917 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:08:57,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4416 Valid, 10917 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:08:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2021-11-23 14:08:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1344. [2021-11-23 14:08:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1338 states have (on average 1.6666666666666667) internal successors, (2230), 1343 states have internal predecessors, (2230), 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) [2021-11-23 14:08:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2230 transitions. [2021-11-23 14:08:57,784 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2230 transitions. Word has length 81 [2021-11-23 14:08:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:08:57,784 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 2230 transitions. [2021-11-23 14:08:57,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2021-11-23 14:08:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2230 transitions. [2021-11-23 14:08:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 14:08:57,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:08:57,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:08:57,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:08:57,788 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:08:57,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:08:57,789 INFO L85 PathProgramCache]: Analyzing trace with hash -841285670, now seen corresponding path program 1 times [2021-11-23 14:08:57,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:08:57,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762675201] [2021-11-23 14:08:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:08:57,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:08:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:08:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:08:57,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:08:57,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762675201] [2021-11-23 14:08:57,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762675201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:08:57,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:08:57,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:08:57,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663110913] [2021-11-23 14:08:57,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:08:57,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:08:57,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:08:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:08:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:08:57,880 INFO L87 Difference]: Start difference. First operand 1344 states and 2230 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-23 14:08:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:08:58,058 INFO L93 Difference]: Finished difference Result 2667 states and 4431 transitions. [2021-11-23 14:08:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:08:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-23 14:08:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:08:58,070 INFO L225 Difference]: With dead ends: 2667 [2021-11-23 14:08:58,070 INFO L226 Difference]: Without dead ends: 1351 [2021-11-23 14:08:58,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:08:58,082 INFO L933 BasicCegarLoop]: 2234 mSDtfsCounter, 2203 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2203 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:08:58,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2203 Valid, 2256 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:08:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-11-23 14:08:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1344. [2021-11-23 14:08:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1338 states have (on average 1.664424514200299) internal successors, (2227), 1343 states have internal predecessors, (2227), 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) [2021-11-23 14:08:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2227 transitions. [2021-11-23 14:08:58,174 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2227 transitions. Word has length 82 [2021-11-23 14:08:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:08:58,177 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 2227 transitions. [2021-11-23 14:08:58,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-23 14:08:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2227 transitions. [2021-11-23 14:08:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 14:08:58,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:08:58,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:08:58,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:08:58,183 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:08:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:08:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash -242881579, now seen corresponding path program 1 times [2021-11-23 14:08:58,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:08:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684417035] [2021-11-23 14:08:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:08:58,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:08:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:08:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:08:58,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:08:58,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684417035] [2021-11-23 14:08:58,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684417035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:08:58,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:08:58,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:08:58,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250002804] [2021-11-23 14:08:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:08:58,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:08:58,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:08:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:08:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:08:58,359 INFO L87 Difference]: Start difference. First operand 1344 states and 2227 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2021-11-23 14:08:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:08:58,822 INFO L93 Difference]: Finished difference Result 3960 states and 6578 transitions. [2021-11-23 14:08:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:08:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 84 [2021-11-23 14:08:58,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:08:58,845 INFO L225 Difference]: With dead ends: 3960 [2021-11-23 14:08:58,845 INFO L226 Difference]: Without dead ends: 2649 [2021-11-23 14:08:58,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:08:58,864 INFO L933 BasicCegarLoop]: 2211 mSDtfsCounter, 10886 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10886 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:08:58,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10886 Valid, 4435 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:08:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2021-11-23 14:08:58,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 1344. [2021-11-23 14:08:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1338 states have (on average 1.663677130044843) internal successors, (2226), 1343 states have internal predecessors, (2226), 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) [2021-11-23 14:08:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2226 transitions. [2021-11-23 14:08:59,004 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2226 transitions. Word has length 84 [2021-11-23 14:08:59,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:08:59,004 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 2226 transitions. [2021-11-23 14:08:59,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2021-11-23 14:08:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2226 transitions. [2021-11-23 14:08:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 14:08:59,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:08:59,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:08:59,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:08:59,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:08:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:08:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash -77744508, now seen corresponding path program 1 times [2021-11-23 14:08:59,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:08:59,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459039057] [2021-11-23 14:08:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:08:59,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:08:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:08:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:08:59,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:08:59,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459039057] [2021-11-23 14:08:59,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459039057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:08:59,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:08:59,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:08:59,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935589136] [2021-11-23 14:08:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:08:59,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:08:59,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:08:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:08:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:08:59,110 INFO L87 Difference]: Start difference. First operand 1344 states and 2226 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-23 14:08:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:08:59,510 INFO L93 Difference]: Finished difference Result 3967 states and 6584 transitions. [2021-11-23 14:08:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:08:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2021-11-23 14:08:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:08:59,532 INFO L225 Difference]: With dead ends: 3967 [2021-11-23 14:08:59,532 INFO L226 Difference]: Without dead ends: 2656 [2021-11-23 14:08:59,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:08:59,537 INFO L933 BasicCegarLoop]: 2210 mSDtfsCounter, 10890 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10890 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:08:59,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10890 Valid, 4438 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:08:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-11-23 14:08:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1344. [2021-11-23 14:08:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1338 states have (on average 1.6629297458893872) internal successors, (2225), 1343 states have internal predecessors, (2225), 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) [2021-11-23 14:08:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2225 transitions. [2021-11-23 14:08:59,666 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2225 transitions. Word has length 85 [2021-11-23 14:08:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:08:59,667 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 2225 transitions. [2021-11-23 14:08:59,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-23 14:08:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2225 transitions. [2021-11-23 14:08:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 14:08:59,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:08:59,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:08:59,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:08:59,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:08:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:08:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2146680454, now seen corresponding path program 1 times [2021-11-23 14:08:59,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:08:59,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163531072] [2021-11-23 14:08:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:08:59,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:08:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:08:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:08:59,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:08:59,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163531072] [2021-11-23 14:08:59,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163531072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:08:59,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:08:59,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:08:59,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194455146] [2021-11-23 14:08:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:08:59,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:08:59,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:08:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:08:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:08:59,781 INFO L87 Difference]: Start difference. First operand 1344 states and 2225 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2021-11-23 14:08:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:08:59,927 INFO L93 Difference]: Finished difference Result 2384 states and 3918 transitions. [2021-11-23 14:08:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:08:59,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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 [2021-11-23 14:08:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:08:59,937 INFO L225 Difference]: With dead ends: 2384 [2021-11-23 14:08:59,938 INFO L226 Difference]: Without dead ends: 1347 [2021-11-23 14:08:59,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:08:59,941 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 1 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4444 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:08:59,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4444 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:08:59,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-11-23 14:09:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1346. [2021-11-23 14:09:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1340 states have (on average 1.6619402985074627) internal successors, (2227), 1345 states have internal predecessors, (2227), 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) [2021-11-23 14:09:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2227 transitions. [2021-11-23 14:09:00,040 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2227 transitions. Word has length 86 [2021-11-23 14:09:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:00,041 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 2227 transitions. [2021-11-23 14:09:00,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2021-11-23 14:09:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2227 transitions. [2021-11-23 14:09:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 14:09:00,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:00,044 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:00,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:09:00,045 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash 508146133, now seen corresponding path program 1 times [2021-11-23 14:09:00,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:00,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072991735] [2021-11-23 14:09:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:00,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:00,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:00,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072991735] [2021-11-23 14:09:00,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072991735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:00,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:00,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:00,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90467652] [2021-11-23 14:09:00,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:00,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:00,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:00,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:00,119 INFO L87 Difference]: Start difference. First operand 1346 states and 2227 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-23 14:09:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:00,345 INFO L93 Difference]: Finished difference Result 3910 states and 6491 transitions. [2021-11-23 14:09:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:00,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2021-11-23 14:09:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:00,366 INFO L225 Difference]: With dead ends: 3910 [2021-11-23 14:09:00,366 INFO L226 Difference]: Without dead ends: 2602 [2021-11-23 14:09:00,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:00,372 INFO L933 BasicCegarLoop]: 2224 mSDtfsCounter, 2175 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:00,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2175 Valid, 4350 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-23 14:09:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1565. [2021-11-23 14:09:00,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1559 states have (on average 1.68120590121873) internal successors, (2621), 1564 states have internal predecessors, (2621), 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) [2021-11-23 14:09:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2621 transitions. [2021-11-23 14:09:00,512 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2621 transitions. Word has length 95 [2021-11-23 14:09:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:00,513 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 2621 transitions. [2021-11-23 14:09:00,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-23 14:09:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2621 transitions. [2021-11-23 14:09:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 14:09:00,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:00,517 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:00,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:09:00,518 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:00,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1171529159, now seen corresponding path program 1 times [2021-11-23 14:09:00,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:00,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215383292] [2021-11-23 14:09:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:00,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:00,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:00,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215383292] [2021-11-23 14:09:00,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215383292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:00,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:00,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 14:09:00,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906888504] [2021-11-23 14:09:00,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:00,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 14:09:00,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 14:09:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:09:00,629 INFO L87 Difference]: Start difference. First operand 1565 states and 2621 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2021-11-23 14:09:01,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:01,087 INFO L93 Difference]: Finished difference Result 4609 states and 7753 transitions. [2021-11-23 14:09:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:09:01,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 96 [2021-11-23 14:09:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:01,110 INFO L225 Difference]: With dead ends: 4609 [2021-11-23 14:09:01,111 INFO L226 Difference]: Without dead ends: 3082 [2021-11-23 14:09:01,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:09:01,116 INFO L933 BasicCegarLoop]: 4369 mSDtfsCounter, 4385 mSDsluCounter, 6553 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 10922 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:01,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4385 Valid, 10922 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:09:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-23 14:09:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 1565. [2021-11-23 14:09:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1559 states have (on average 1.6799230275817831) internal successors, (2619), 1564 states have internal predecessors, (2619), 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) [2021-11-23 14:09:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2619 transitions. [2021-11-23 14:09:01,287 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2619 transitions. Word has length 96 [2021-11-23 14:09:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:01,288 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 2619 transitions. [2021-11-23 14:09:01,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2021-11-23 14:09:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2619 transitions. [2021-11-23 14:09:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 14:09:01,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:01,295 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:01,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:09:01,298 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:01,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2018092960, now seen corresponding path program 1 times [2021-11-23 14:09:01,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:01,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556967455] [2021-11-23 14:09:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:01,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:01,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556967455] [2021-11-23 14:09:01,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556967455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:01,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:01,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:01,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650091113] [2021-11-23 14:09:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:01,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:01,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:01,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:01,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:01,385 INFO L87 Difference]: Start difference. First operand 1565 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-23 14:09:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:01,735 INFO L93 Difference]: Finished difference Result 4607 states and 7745 transitions. [2021-11-23 14:09:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-23 14:09:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:01,761 INFO L225 Difference]: With dead ends: 4607 [2021-11-23 14:09:01,761 INFO L226 Difference]: Without dead ends: 3080 [2021-11-23 14:09:01,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:01,769 INFO L933 BasicCegarLoop]: 3913 mSDtfsCounter, 2172 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 6125 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:01,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 6125 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:01,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2021-11-23 14:09:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 2043. [2021-11-23 14:09:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 2037 states have (on average 1.709376534118802) internal successors, (3482), 2042 states have internal predecessors, (3482), 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) [2021-11-23 14:09:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3482 transitions. [2021-11-23 14:09:01,979 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3482 transitions. Word has length 97 [2021-11-23 14:09:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:01,980 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 3482 transitions. [2021-11-23 14:09:01,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2021-11-23 14:09:01,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3482 transitions. [2021-11-23 14:09:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-23 14:09:01,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:01,986 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:01,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:09:01,986 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -343635167, now seen corresponding path program 1 times [2021-11-23 14:09:01,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149085520] [2021-11-23 14:09:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:01,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:02,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:02,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149085520] [2021-11-23 14:09:02,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149085520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:09:02,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995656089] [2021-11-23 14:09:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:02,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:09:02,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:09:02,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:09:02,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:09:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:02,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 14:09:02,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:09:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:02,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:09:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:02,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995656089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:09:02,974 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 14:09:02,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 14:09:02,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682785196] [2021-11-23 14:09:02,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 14:09:02,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:09:02,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:09:02,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:09:02,977 INFO L87 Difference]: Start difference. First operand 2043 states and 3482 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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) [2021-11-23 14:09:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:03,662 INFO L93 Difference]: Finished difference Result 8191 states and 13842 transitions. [2021-11-23 14:09:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 14:09:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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 97 [2021-11-23 14:09:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:03,716 INFO L225 Difference]: With dead ends: 8191 [2021-11-23 14:09:03,716 INFO L226 Difference]: Without dead ends: 7154 [2021-11-23 14:09:03,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:09:03,722 INFO L933 BasicCegarLoop]: 2222 mSDtfsCounter, 13018 mSDsluCounter, 8748 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13018 SdHoareTripleChecker+Valid, 10970 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:03,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13018 Valid, 10970 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:03,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7154 states. [2021-11-23 14:09:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7154 to 4043. [2021-11-23 14:09:04,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 4037 states have (on average 1.7525390141193955) internal successors, (7075), 4042 states have internal predecessors, (7075), 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) [2021-11-23 14:09:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 7075 transitions. [2021-11-23 14:09:04,130 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 7075 transitions. Word has length 97 [2021-11-23 14:09:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:04,132 INFO L470 AbstractCegarLoop]: Abstraction has 4043 states and 7075 transitions. [2021-11-23 14:09:04,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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) [2021-11-23 14:09:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 7075 transitions. [2021-11-23 14:09:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 14:09:04,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:04,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:04,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:09:04,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8f1e42-db9b-456a-a7de-e0ef1a89c0d2/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 14:09:04,361 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:04,361 INFO L85 PathProgramCache]: Analyzing trace with hash 382238771, now seen corresponding path program 1 times [2021-11-23 14:09:04,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:04,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206005759] [2021-11-23 14:09:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:04,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:04,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:04,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206005759] [2021-11-23 14:09:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206005759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:04,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:04,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:04,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484029923] [2021-11-23 14:09:04,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:04,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:04,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:04,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:04,424 INFO L87 Difference]: Start difference. First operand 4043 states and 7075 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 14:09:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:04,886 INFO L93 Difference]: Finished difference Result 10877 states and 19031 transitions. [2021-11-23 14:09:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2021-11-23 14:09:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:04,912 INFO L225 Difference]: With dead ends: 10877 [2021-11-23 14:09:04,912 INFO L226 Difference]: Without dead ends: 7034 [2021-11-23 14:09:04,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:04,923 INFO L933 BasicCegarLoop]: 2224 mSDtfsCounter, 2170 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:04,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2170 Valid, 4435 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2021-11-23 14:09:05,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 5997. [2021-11-23 14:09:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5997 states, 5991 states have (on average 1.7663161408779837) internal successors, (10582), 5996 states have internal predecessors, (10582), 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) [2021-11-23 14:09:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5997 states to 5997 states and 10582 transitions. [2021-11-23 14:09:05,500 INFO L78 Accepts]: Start accepts. Automaton has 5997 states and 10582 transitions. Word has length 100 [2021-11-23 14:09:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:05,501 INFO L470 AbstractCegarLoop]: Abstraction has 5997 states and 10582 transitions. [2021-11-23 14:09:05,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-23 14:09:05,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5997 states and 10582 transitions. [2021-11-23 14:09:05,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 14:09:05,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:05,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:05,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 14:09:05,518 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:05,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:05,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1963945663, now seen corresponding path program 1 times [2021-11-23 14:09:05,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:05,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440018459] [2021-11-23 14:09:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:05,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:05,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440018459] [2021-11-23 14:09:05,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440018459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:05,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:05,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:05,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065464120] [2021-11-23 14:09:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:05,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:05,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:05,613 INFO L87 Difference]: Start difference. First operand 5997 states and 10582 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-23 14:09:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:06,353 INFO L93 Difference]: Finished difference Result 15265 states and 26901 transitions. [2021-11-23 14:09:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-23 14:09:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:06,392 INFO L225 Difference]: With dead ends: 15265 [2021-11-23 14:09:06,392 INFO L226 Difference]: Without dead ends: 9835 [2021-11-23 14:09:06,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:06,406 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2168 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:06,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2168 Valid, 4386 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2021-11-23 14:09:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 8798. [2021-11-23 14:09:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8798 states, 8792 states have (on average 1.772975432211101) internal successors, (15588), 8797 states have internal predecessors, (15588), 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) [2021-11-23 14:09:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8798 states to 8798 states and 15588 transitions. [2021-11-23 14:09:07,107 INFO L78 Accepts]: Start accepts. Automaton has 8798 states and 15588 transitions. Word has length 101 [2021-11-23 14:09:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:07,107 INFO L470 AbstractCegarLoop]: Abstraction has 8798 states and 15588 transitions. [2021-11-23 14:09:07,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-23 14:09:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8798 states and 15588 transitions. [2021-11-23 14:09:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 14:09:07,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:07,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:07,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 14:09:07,134 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash 500253925, now seen corresponding path program 1 times [2021-11-23 14:09:07,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:07,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470846093] [2021-11-23 14:09:07,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:07,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:07,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:07,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470846093] [2021-11-23 14:09:07,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470846093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:07,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:07,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:07,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384878856] [2021-11-23 14:09:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:07,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:07,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:07,225 INFO L87 Difference]: Start difference. First operand 8798 states and 15588 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-23 14:09:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:08,096 INFO L93 Difference]: Finished difference Result 21893 states and 38759 transitions. [2021-11-23 14:09:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2021-11-23 14:09:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:08,142 INFO L225 Difference]: With dead ends: 21893 [2021-11-23 14:09:08,142 INFO L226 Difference]: Without dead ends: 14251 [2021-11-23 14:09:08,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:08,158 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2166 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:08,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 4386 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2021-11-23 14:09:09,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 13214. [2021-11-23 14:09:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13214 states, 13208 states have (on average 1.7766505148394913) internal successors, (23466), 13213 states have internal predecessors, (23466), 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) [2021-11-23 14:09:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13214 states to 13214 states and 23466 transitions. [2021-11-23 14:09:09,214 INFO L78 Accepts]: Start accepts. Automaton has 13214 states and 23466 transitions. Word has length 102 [2021-11-23 14:09:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:09,215 INFO L470 AbstractCegarLoop]: Abstraction has 13214 states and 23466 transitions. [2021-11-23 14:09:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-23 14:09:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 13214 states and 23466 transitions. [2021-11-23 14:09:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 14:09:09,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:09,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:09,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 14:09:09,249 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash 465710289, now seen corresponding path program 1 times [2021-11-23 14:09:09,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647518647] [2021-11-23 14:09:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:09,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:09,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:09,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647518647] [2021-11-23 14:09:09,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647518647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:09,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:09,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:09,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006079817] [2021-11-23 14:09:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:09,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:09,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:09,336 INFO L87 Difference]: Start difference. First operand 13214 states and 23466 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-23 14:09:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:10,746 INFO L93 Difference]: Finished difference Result 33952 states and 60378 transitions. [2021-11-23 14:09:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-23 14:09:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:10,834 INFO L225 Difference]: With dead ends: 33952 [2021-11-23 14:09:10,835 INFO L226 Difference]: Without dead ends: 22442 [2021-11-23 14:09:10,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:10,861 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2164 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 4434 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:10,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 4434 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22442 states. [2021-11-23 14:09:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22442 to 21405. [2021-11-23 14:09:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21405 states, 21399 states have (on average 1.7813449226599374) internal successors, (38119), 21404 states have internal predecessors, (38119), 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) [2021-11-23 14:09:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21405 states to 21405 states and 38119 transitions. [2021-11-23 14:09:12,712 INFO L78 Accepts]: Start accepts. Automaton has 21405 states and 38119 transitions. Word has length 103 [2021-11-23 14:09:12,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:12,713 INFO L470 AbstractCegarLoop]: Abstraction has 21405 states and 38119 transitions. [2021-11-23 14:09:12,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-23 14:09:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 21405 states and 38119 transitions. [2021-11-23 14:09:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 14:09:12,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:12,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:12,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 14:09:12,765 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash -22415019, now seen corresponding path program 1 times [2021-11-23 14:09:12,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:12,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156426886] [2021-11-23 14:09:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:12,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:12,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:12,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156426886] [2021-11-23 14:09:12,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156426886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:12,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:12,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:12,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380810618] [2021-11-23 14:09:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:12,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:12,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:12,831 INFO L87 Difference]: Start difference. First operand 21405 states and 38119 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-23 14:09:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:14,613 INFO L93 Difference]: Finished difference Result 55883 states and 99803 transitions. [2021-11-23 14:09:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:14,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-23 14:09:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:14,754 INFO L225 Difference]: With dead ends: 55883 [2021-11-23 14:09:14,754 INFO L226 Difference]: Without dead ends: 37072 [2021-11-23 14:09:14,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:14,794 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2162 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 4433 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:14,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 4433 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37072 states. [2021-11-23 14:09:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37072 to 36035. [2021-11-23 14:09:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36035 states, 36029 states have (on average 1.786394293485803) internal successors, (64362), 36034 states have internal predecessors, (64362), 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) [2021-11-23 14:09:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36035 states to 36035 states and 64362 transitions. [2021-11-23 14:09:17,658 INFO L78 Accepts]: Start accepts. Automaton has 36035 states and 64362 transitions. Word has length 104 [2021-11-23 14:09:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:17,659 INFO L470 AbstractCegarLoop]: Abstraction has 36035 states and 64362 transitions. [2021-11-23 14:09:17,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2021-11-23 14:09:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 36035 states and 64362 transitions. [2021-11-23 14:09:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 14:09:17,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:17,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:17,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 14:09:17,719 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:17,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash -279490657, now seen corresponding path program 1 times [2021-11-23 14:09:17,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:17,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410709083] [2021-11-23 14:09:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:17,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:17,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:17,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410709083] [2021-11-23 14:09:17,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410709083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:17,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:17,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:17,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491484334] [2021-11-23 14:09:17,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:17,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:17,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:17,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:17,793 INFO L87 Difference]: Start difference. First operand 36035 states and 64362 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-23 14:09:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:20,151 INFO L93 Difference]: Finished difference Result 90130 states and 160542 transitions. [2021-11-23 14:09:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-23 14:09:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:20,317 INFO L225 Difference]: With dead ends: 90130 [2021-11-23 14:09:20,317 INFO L226 Difference]: Without dead ends: 58927 [2021-11-23 14:09:20,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:20,365 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2160 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:20,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2160 Valid, 4359 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:20,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58927 states. [2021-11-23 14:09:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58927 to 57890. [2021-11-23 14:09:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57890 states, 57884 states have (on average 1.776760417386497) internal successors, (102846), 57889 states have internal predecessors, (102846), 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) [2021-11-23 14:09:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57890 states to 57890 states and 102846 transitions. [2021-11-23 14:09:23,451 INFO L78 Accepts]: Start accepts. Automaton has 57890 states and 102846 transitions. Word has length 105 [2021-11-23 14:09:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:23,452 INFO L470 AbstractCegarLoop]: Abstraction has 57890 states and 102846 transitions. [2021-11-23 14:09:23,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-11-23 14:09:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 57890 states and 102846 transitions. [2021-11-23 14:09:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 14:09:23,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:23,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:23,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 14:09:23,753 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1935820809, now seen corresponding path program 1 times [2021-11-23 14:09:23,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306132522] [2021-11-23 14:09:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:23,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:23,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:23,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306132522] [2021-11-23 14:09:23,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306132522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:23,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:23,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:23,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128448396] [2021-11-23 14:09:23,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:23,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:23,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:23,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:23,814 INFO L87 Difference]: Start difference. First operand 57890 states and 102846 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-23 14:09:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:27,574 INFO L93 Difference]: Finished difference Result 149301 states and 265167 transitions. [2021-11-23 14:09:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-23 14:09:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:27,838 INFO L225 Difference]: With dead ends: 149301 [2021-11-23 14:09:27,838 INFO L226 Difference]: Without dead ends: 98581 [2021-11-23 14:09:27,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:27,921 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2158 mSDsluCounter, 2163 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:27,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 4386 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98581 states. [2021-11-23 14:09:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98581 to 97544. [2021-11-23 14:09:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97544 states, 97538 states have (on average 1.773155078020874) internal successors, (172950), 97543 states have internal predecessors, (172950), 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) [2021-11-23 14:09:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97544 states to 97544 states and 172950 transitions. [2021-11-23 14:09:33,234 INFO L78 Accepts]: Start accepts. Automaton has 97544 states and 172950 transitions. Word has length 106 [2021-11-23 14:09:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:33,234 INFO L470 AbstractCegarLoop]: Abstraction has 97544 states and 172950 transitions. [2021-11-23 14:09:33,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-23 14:09:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 97544 states and 172950 transitions. [2021-11-23 14:09:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 14:09:33,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:09:33,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:09:33,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 14:09:33,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 14:09:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:09:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash -579990361, now seen corresponding path program 1 times [2021-11-23 14:09:33,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:09:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335612146] [2021-11-23 14:09:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:09:33,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:09:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:09:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:09:33,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:09:33,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335612146] [2021-11-23 14:09:33,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335612146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:09:33,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:09:33,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:09:33,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722252240] [2021-11-23 14:09:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:09:33,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:09:33,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:09:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:09:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:33,371 INFO L87 Difference]: Start difference. First operand 97544 states and 172950 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-11-23 14:09:40,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:09:40,369 INFO L93 Difference]: Finished difference Result 269073 states and 478219 transitions. [2021-11-23 14:09:40,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:09:40,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-11-23 14:09:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:09:40,773 INFO L225 Difference]: With dead ends: 269073 [2021-11-23 14:09:40,774 INFO L226 Difference]: Without dead ends: 180719 [2021-11-23 14:09:40,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:09:40,851 INFO L933 BasicCegarLoop]: 2223 mSDtfsCounter, 2156 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2156 SdHoareTripleChecker+Valid, 4433 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:09:40,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2156 Valid, 4433 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:09:41,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180719 states. [2021-11-23 14:09:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180719 to 179682. [2021-11-23 14:09:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179682 states, 179676 states have (on average 1.7758075647276208) internal successors, (319070), 179681 states have internal predecessors, (319070), 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) [2021-11-23 14:09:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179682 states to 179682 states and 319070 transitions. [2021-11-23 14:09:49,925 INFO L78 Accepts]: Start accepts. Automaton has 179682 states and 319070 transitions. Word has length 107 [2021-11-23 14:09:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:09:49,925 INFO L470 AbstractCegarLoop]: Abstraction has 179682 states and 319070 transitions. [2021-11-23 14:09:49,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-11-23 14:09:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 179682 states and 319070 transitions.