./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.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_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/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_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/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_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:13:35,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:13:35,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:13:35,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:13:35,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:13:35,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:13:35,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:13:35,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:13:35,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:13:35,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:13:35,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:13:35,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:13:35,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:13:35,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:13:35,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:13:35,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:13:35,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:13:35,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:13:35,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:13:35,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:13:35,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:13:35,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:13:35,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:13:35,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:13:35,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:13:35,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:13:35,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:13:35,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:13:35,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:13:35,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:13:35,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:13:35,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:13:35,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:13:35,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:13:35,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:13:35,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:13:35,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:13:35,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:13:35,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:13:35,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:13:35,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:13:35,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:13:36,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:13:36,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:13:36,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:13:36,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:13:36,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:13:36,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:13:36,022 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:13:36,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:13:36,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:13:36,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:13:36,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:13:36,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:13:36,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:13:36,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:13:36,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:13:36,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:13:36,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:13:36,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:13:36,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:13:36,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:13:36,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:13:36,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:13:36,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:13:36,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:13:36,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:13:36,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:13:36,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:13:36,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:13:36,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:13:36,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:13:36,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:13:36,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:13:36,039 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_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2021-11-23 14:13:36,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:13:36,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:13:36,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:13:36,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:13:36,361 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:13:36,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2021-11-23 14:13:36,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/data/fdfbed061/ee660ad422e04e1ab12f59b123742b9e/FLAG4b1f3c6b7 [2021-11-23 14:13:37,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:13:37,099 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2021-11-23 14:13:37,152 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/data/fdfbed061/ee660ad422e04e1ab12f59b123742b9e/FLAG4b1f3c6b7 [2021-11-23 14:13:37,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/data/fdfbed061/ee660ad422e04e1ab12f59b123742b9e [2021-11-23 14:13:37,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:13:37,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:13:37,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:13:37,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:13:37,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:13:37,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:37" (1/1) ... [2021-11-23 14:13:37,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d90f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:37, skipping insertion in model container [2021-11-23 14:13:37,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:13:37" (1/1) ... [2021-11-23 14:13:37,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:13:37,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:13:37,603 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_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2021-11-23 14:13:37,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:13:37,943 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:13:37,968 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_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2021-11-23 14:13:38,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:13:38,166 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:13:38,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38 WrapperNode [2021-11-23 14:13:38,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:13:38,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:13:38,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:13:38,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:13:38,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:38,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:38,566 INFO L137 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 200, calls inlined = 764, statements flattened = 26731 [2021-11-23 14:13:38,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:13:38,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:13:38,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:13:38,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:13:38,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:38,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:38,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:38,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:38,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:39,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:39,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:39,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:13:39,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:13:39,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:13:39,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:13:39,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (1/1) ... [2021-11-23 14:13:39,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:13:39,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:13:39,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:13:39,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b963c2c-af6a-4a64-a8ef-9a43aab1b0a4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:13:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:13:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:13:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:13:39,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:13:39,473 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:13:39,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:13:49,010 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:13:49,091 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:13:49,092 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 14:13:49,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:49 BoogieIcfgContainer [2021-11-23 14:13:49,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:13:49,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:13:49,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:13:49,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:13:49,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:13:37" (1/3) ... [2021-11-23 14:13:49,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb1d995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:49, skipping insertion in model container [2021-11-23 14:13:49,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:13:38" (2/3) ... [2021-11-23 14:13:49,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb1d995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:13:49, skipping insertion in model container [2021-11-23 14:13:49,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:13:49" (3/3) ... [2021-11-23 14:13:49,113 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2021-11-23 14:13:49,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:13:49,121 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-23 14:13:49,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:13:49,224 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 14:13:49,224 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-23 14:13:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 7021 states, 7015 states have (on average 1.8785459729151817) internal successors, (13178), 7020 states have internal predecessors, (13178), 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 14:13:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 14:13:49,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:49,406 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] [2021-11-23 14:13:49,406 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:13:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1530279549, now seen corresponding path program 1 times [2021-11-23 14:13:49,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999810907] [2021-11-23 14:13:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:49,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:49,808 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 14:13:49,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:49,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999810907] [2021-11-23 14:13:49,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999810907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:49,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:49,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:13:49,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423997890] [2021-11-23 14:13:49,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:49,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:13:49,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:13:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:13:49,919 INFO L87 Difference]: Start difference. First operand has 7021 states, 7015 states have (on average 1.8785459729151817) internal successors, (13178), 7020 states have internal predecessors, (13178), 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 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 14:13:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:50,644 INFO L93 Difference]: Finished difference Result 20968 states and 39374 transitions. [2021-11-23 14:13:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:13:50,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-23 14:13:50,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:50,771 INFO L225 Difference]: With dead ends: 20968 [2021-11-23 14:13:50,772 INFO L226 Difference]: Without dead ends: 13949 [2021-11-23 14:13:50,795 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 14:13:50,799 INFO L933 BasicCegarLoop]: 26191 mSDtfsCounter, 13138 mSDsluCounter, 13045 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13138 SdHoareTripleChecker+Valid, 39236 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:50,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13138 Valid, 39236 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:13:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13949 states. [2021-11-23 14:13:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13949 to 7010. [2021-11-23 14:13:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7005 states have (on average 1.8776588151320486) internal successors, (13153), 7009 states have internal predecessors, (13153), 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 14:13:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 13153 transitions. [2021-11-23 14:13:51,347 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 13153 transitions. Word has length 46 [2021-11-23 14:13:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:51,349 INFO L470 AbstractCegarLoop]: Abstraction has 7010 states and 13153 transitions. [2021-11-23 14:13:51,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 14:13:51,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 13153 transitions. [2021-11-23 14:13:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 14:13:51,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:51,362 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] [2021-11-23 14:13:51,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:13:51,364 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:13:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash -891948157, now seen corresponding path program 1 times [2021-11-23 14:13:51,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:51,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454829077] [2021-11-23 14:13:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:51,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:51,506 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 14:13:51,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:51,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454829077] [2021-11-23 14:13:51,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454829077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:51,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:51,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 14:13:51,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701595574] [2021-11-23 14:13:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:51,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 14:13:51,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 14:13:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 14:13:51,512 INFO L87 Difference]: Start difference. First operand 7010 states and 13153 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 14:13:53,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:53,189 INFO L93 Difference]: Finished difference Result 27806 states and 52200 transitions. [2021-11-23 14:13:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 14:13:53,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2021-11-23 14:13:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:53,292 INFO L225 Difference]: With dead ends: 27806 [2021-11-23 14:13:53,293 INFO L226 Difference]: Without dead ends: 20840 [2021-11-23 14:13:53,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-23 14:13:53,308 INFO L933 BasicCegarLoop]: 13116 mSDtfsCounter, 91531 mSDsluCounter, 38985 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91531 SdHoareTripleChecker+Valid, 52101 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:53,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91531 Valid, 52101 Invalid, 57 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:13:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20840 states. [2021-11-23 14:13:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20840 to 7006. [2021-11-23 14:13:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7001 states have (on average 1.877160405656335) internal successors, (13142), 7005 states have internal predecessors, (13142), 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 14:13:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 13142 transitions. [2021-11-23 14:13:53,669 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 13142 transitions. Word has length 53 [2021-11-23 14:13:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:53,670 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 13142 transitions. [2021-11-23 14:13:53,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 14:13:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 13142 transitions. [2021-11-23 14:13:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 14:13:53,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:53,673 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] [2021-11-23 14:13:53,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 14:13:53,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:13:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1204858735, now seen corresponding path program 1 times [2021-11-23 14:13:53,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522159886] [2021-11-23 14:13:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:53,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:53,727 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 14:13:53,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:53,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522159886] [2021-11-23 14:13:53,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522159886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:53,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:53,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:13:53,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76828390] [2021-11-23 14:13:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:53,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:13:53,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:13:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:13:53,731 INFO L87 Difference]: Start difference. First operand 7006 states and 13142 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 14:13:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:54,638 INFO L93 Difference]: Finished difference Result 20901 states and 39230 transitions. [2021-11-23 14:13:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:13:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2021-11-23 14:13:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:54,677 INFO L225 Difference]: With dead ends: 20901 [2021-11-23 14:13:54,678 INFO L226 Difference]: Without dead ends: 13939 [2021-11-23 14:13:54,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:13:54,702 INFO L933 BasicCegarLoop]: 25996 mSDtfsCounter, 26211 mSDsluCounter, 12986 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26211 SdHoareTripleChecker+Valid, 38982 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:54,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26211 Valid, 38982 Invalid, 232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:13:54,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13939 states. [2021-11-23 14:13:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13939 to 7006. [2021-11-23 14:13:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7001 states have (on average 1.8758748750178547) internal successors, (13133), 7005 states have internal predecessors, (13133), 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 14:13:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 13133 transitions. [2021-11-23 14:13:55,137 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 13133 transitions. Word has length 55 [2021-11-23 14:13:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:55,137 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 13133 transitions. [2021-11-23 14:13:55,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 14:13:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 13133 transitions. [2021-11-23 14:13:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 14:13:55,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:55,139 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] [2021-11-23 14:13:55,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 14:13:55,145 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:13:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1188393693, now seen corresponding path program 1 times [2021-11-23 14:13:55,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:55,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085448565] [2021-11-23 14:13:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:55,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:55,208 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 14:13:55,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085448565] [2021-11-23 14:13:55,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085448565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:55,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:55,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:13:55,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185271682] [2021-11-23 14:13:55,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:55,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:13:55,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:13:55,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:13:55,213 INFO L87 Difference]: Start difference. First operand 7006 states and 13133 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 14:13:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:56,088 INFO L93 Difference]: Finished difference Result 20901 states and 39212 transitions. [2021-11-23 14:13:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:13:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-23 14:13:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:56,128 INFO L225 Difference]: With dead ends: 20901 [2021-11-23 14:13:56,128 INFO L226 Difference]: Without dead ends: 13939 [2021-11-23 14:13:56,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:13:56,147 INFO L933 BasicCegarLoop]: 25996 mSDtfsCounter, 26192 mSDsluCounter, 12986 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26192 SdHoareTripleChecker+Valid, 38982 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:56,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26192 Valid, 38982 Invalid, 214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:13:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13939 states. [2021-11-23 14:13:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13939 to 7006. [2021-11-23 14:13:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7001 states have (on average 1.8745893443793744) internal successors, (13124), 7005 states have internal predecessors, (13124), 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 14:13:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 13124 transitions. [2021-11-23 14:13:56,510 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 13124 transitions. Word has length 57 [2021-11-23 14:13:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:56,510 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 13124 transitions. [2021-11-23 14:13:56,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 14:13:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 13124 transitions. [2021-11-23 14:13:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 14:13:56,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:56,513 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] [2021-11-23 14:13:56,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 14:13:56,514 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:13:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash -732938553, now seen corresponding path program 1 times [2021-11-23 14:13:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:56,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975029934] [2021-11-23 14:13:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:56,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:56,572 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 14:13:56,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:56,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975029934] [2021-11-23 14:13:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975029934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:56,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:56,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:13:56,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376644958] [2021-11-23 14:13:56,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:56,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:13:56,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:56,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:13:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:13:56,577 INFO L87 Difference]: Start difference. First operand 7006 states and 13124 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:13:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:57,853 INFO L93 Difference]: Finished difference Result 34707 states and 65114 transitions. [2021-11-23 14:13:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:13:57,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-23 14:13:57,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:57,938 INFO L225 Difference]: With dead ends: 34707 [2021-11-23 14:13:57,938 INFO L226 Difference]: Without dead ends: 27745 [2021-11-23 14:13:57,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:13:57,954 INFO L933 BasicCegarLoop]: 51952 mSDtfsCounter, 26152 mSDsluCounter, 51905 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26152 SdHoareTripleChecker+Valid, 103857 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:57,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26152 Valid, 103857 Invalid, 182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:13:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27745 states. [2021-11-23 14:13:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27745 to 7006. [2021-11-23 14:13:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7001 states have (on average 1.8740179974289388) internal successors, (13120), 7005 states have internal predecessors, (13120), 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 14:13:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 13120 transitions. [2021-11-23 14:13:58,451 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 13120 transitions. Word has length 59 [2021-11-23 14:13:58,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:13:58,452 INFO L470 AbstractCegarLoop]: Abstraction has 7006 states and 13120 transitions. [2021-11-23 14:13:58,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:13:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 13120 transitions. [2021-11-23 14:13:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 14:13:58,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:13:58,459 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] [2021-11-23 14:13:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 14:13:58,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:13:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:13:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -109759929, now seen corresponding path program 1 times [2021-11-23 14:13:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:13:58,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047902341] [2021-11-23 14:13:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:13:58,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:13:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:13:58,533 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 14:13:58,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:13:58,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047902341] [2021-11-23 14:13:58,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047902341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:13:58,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:13:58,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:13:58,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774305626] [2021-11-23 14:13:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:13:58,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:13:58,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:13:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:13:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:13:58,536 INFO L87 Difference]: Start difference. First operand 7006 states and 13120 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:13:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:13:59,425 INFO L93 Difference]: Finished difference Result 27783 states and 52114 transitions. [2021-11-23 14:13:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:13:59,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-23 14:13:59,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:13:59,468 INFO L225 Difference]: With dead ends: 27783 [2021-11-23 14:13:59,469 INFO L226 Difference]: Without dead ends: 20800 [2021-11-23 14:13:59,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:13:59,482 INFO L933 BasicCegarLoop]: 26048 mSDtfsCounter, 26026 mSDsluCounter, 26049 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26026 SdHoareTripleChecker+Valid, 52097 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:13:59,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26026 Valid, 52097 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:13:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20800 states. [2021-11-23 14:14:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20800 to 6988. [2021-11-23 14:14:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6988 states, 6983 states have (on average 1.8744092796792209) internal successors, (13089), 6987 states have internal predecessors, (13089), 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 14:14:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 13089 transitions. [2021-11-23 14:14:00,028 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 13089 transitions. Word has length 59 [2021-11-23 14:14:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:00,029 INFO L470 AbstractCegarLoop]: Abstraction has 6988 states and 13089 transitions. [2021-11-23 14:14:00,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 14:14:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 13089 transitions. [2021-11-23 14:14:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 14:14:00,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:00,031 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] [2021-11-23 14:14:00,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 14:14:00,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1238561863, now seen corresponding path program 1 times [2021-11-23 14:14:00,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:00,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310663902] [2021-11-23 14:14:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:00,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:00,074 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 14:14:00,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:00,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310663902] [2021-11-23 14:14:00,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310663902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:00,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:00,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:14:00,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008935167] [2021-11-23 14:14:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:00,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:14:00,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:14:00,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:14:00,077 INFO L87 Difference]: Start difference. First operand 6988 states and 13089 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 14:14:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:00,860 INFO L93 Difference]: Finished difference Result 20865 states and 39125 transitions. [2021-11-23 14:14:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:14:00,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-11-23 14:14:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:00,882 INFO L225 Difference]: With dead ends: 20865 [2021-11-23 14:14:00,882 INFO L226 Difference]: Without dead ends: 13900 [2021-11-23 14:14:00,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:14:00,890 INFO L933 BasicCegarLoop]: 25982 mSDtfsCounter, 26067 mSDsluCounter, 12986 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26067 SdHoareTripleChecker+Valid, 38968 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:00,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26067 Valid, 38968 Invalid, 138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:14:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13900 states. [2021-11-23 14:14:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13900 to 6988. [2021-11-23 14:14:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6988 states, 6983 states have (on average 1.8735500501217242) internal successors, (13083), 6987 states have internal predecessors, (13083), 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 14:14:01,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 13083 transitions. [2021-11-23 14:14:01,205 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 13083 transitions. Word has length 60 [2021-11-23 14:14:01,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:01,205 INFO L470 AbstractCegarLoop]: Abstraction has 6988 states and 13083 transitions. [2021-11-23 14:14:01,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 14:14:01,206 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 13083 transitions. [2021-11-23 14:14:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 14:14:01,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:01,208 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] [2021-11-23 14:14:01,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 14:14:01,208 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:01,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash 943498018, now seen corresponding path program 1 times [2021-11-23 14:14:01,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:01,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630470922] [2021-11-23 14:14:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:01,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:01,269 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 14:14:01,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:01,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630470922] [2021-11-23 14:14:01,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630470922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:01,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:01,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:14:01,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32352632] [2021-11-23 14:14:01,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:01,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:14:01,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:14:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:14:01,272 INFO L87 Difference]: Start difference. First operand 6988 states and 13083 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 14:14:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:01,914 INFO L93 Difference]: Finished difference Result 20865 states and 39113 transitions. [2021-11-23 14:14:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 14:14:01,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-11-23 14:14:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:01,932 INFO L225 Difference]: With dead ends: 20865 [2021-11-23 14:14:01,932 INFO L226 Difference]: Without dead ends: 13900 [2021-11-23 14:14:01,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:14:01,940 INFO L933 BasicCegarLoop]: 25982 mSDtfsCounter, 26057 mSDsluCounter, 12986 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26057 SdHoareTripleChecker+Valid, 38968 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:01,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26057 Valid, 38968 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:14:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13900 states. [2021-11-23 14:14:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13900 to 6988. [2021-11-23 14:14:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6988 states, 6983 states have (on average 1.8726908205642274) internal successors, (13077), 6987 states have internal predecessors, (13077), 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 14:14:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6988 states to 6988 states and 13077 transitions. [2021-11-23 14:14:02,273 INFO L78 Accepts]: Start accepts. Automaton has 6988 states and 13077 transitions. Word has length 61 [2021-11-23 14:14:02,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:02,273 INFO L470 AbstractCegarLoop]: Abstraction has 6988 states and 13077 transitions. [2021-11-23 14:14:02,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 14:14:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 6988 states and 13077 transitions. [2021-11-23 14:14:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 14:14:02,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:02,276 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] [2021-11-23 14:14:02,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 14:14:02,276 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -895581182, now seen corresponding path program 1 times [2021-11-23 14:14:02,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:02,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115598483] [2021-11-23 14:14:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:02,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:02,336 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 14:14:02,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115598483] [2021-11-23 14:14:02,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115598483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:02,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:02,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:14:02,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061186016] [2021-11-23 14:14:02,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:02,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:14:02,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:02,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:14:02,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:14:02,339 INFO L87 Difference]: Start difference. First operand 6988 states and 13077 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 14:14:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:04,091 INFO L93 Difference]: Finished difference Result 34678 states and 65028 transitions. [2021-11-23 14:14:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:14:04,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 62 [2021-11-23 14:14:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:04,136 INFO L225 Difference]: With dead ends: 34678 [2021-11-23 14:14:04,136 INFO L226 Difference]: Without dead ends: 27719 [2021-11-23 14:14:04,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-23 14:14:04,156 INFO L933 BasicCegarLoop]: 13036 mSDtfsCounter, 117239 mSDsluCounter, 77801 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117239 SdHoareTripleChecker+Valid, 90837 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:04,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117239 Valid, 90837 Invalid, 110 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:14:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27719 states. [2021-11-23 14:14:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27719 to 6990. [2021-11-23 14:14:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6990 states, 6985 states have (on average 1.8722977809591983) internal successors, (13078), 6989 states have internal predecessors, (13078), 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 14:14:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6990 states to 6990 states and 13078 transitions. [2021-11-23 14:14:04,562 INFO L78 Accepts]: Start accepts. Automaton has 6990 states and 13078 transitions. Word has length 62 [2021-11-23 14:14:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:04,562 INFO L470 AbstractCegarLoop]: Abstraction has 6990 states and 13078 transitions. [2021-11-23 14:14:04,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 14:14:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand 6990 states and 13078 transitions. [2021-11-23 14:14:04,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 14:14:04,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:04,565 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] [2021-11-23 14:14:04,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 14:14:04,565 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash -5024290, now seen corresponding path program 1 times [2021-11-23 14:14:04,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:04,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263445543] [2021-11-23 14:14:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:04,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:04,623 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 14:14:04,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:04,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263445543] [2021-11-23 14:14:04,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263445543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:04,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:04,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:14:04,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287281729] [2021-11-23 14:14:04,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:04,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 14:14:04,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 14:14:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 14:14:04,626 INFO L87 Difference]: Start difference. First operand 6990 states and 13078 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 14:14:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:06,366 INFO L93 Difference]: Finished difference Result 34668 states and 65005 transitions. [2021-11-23 14:14:06,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 14:14:06,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 64 [2021-11-23 14:14:06,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:06,407 INFO L225 Difference]: With dead ends: 34668 [2021-11-23 14:14:06,407 INFO L226 Difference]: Without dead ends: 27713 [2021-11-23 14:14:06,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-23 14:14:06,424 INFO L933 BasicCegarLoop]: 13035 mSDtfsCounter, 117224 mSDsluCounter, 77778 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117224 SdHoareTripleChecker+Valid, 90813 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:06,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117224 Valid, 90813 Invalid, 110 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:14:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27713 states. [2021-11-23 14:14:06,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27713 to 6996. [2021-11-23 14:14:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6996 states, 6991 states have (on average 1.871978257759977) internal successors, (13087), 6995 states have internal predecessors, (13087), 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 14:14:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6996 states to 6996 states and 13087 transitions. [2021-11-23 14:14:06,910 INFO L78 Accepts]: Start accepts. Automaton has 6996 states and 13087 transitions. Word has length 64 [2021-11-23 14:14:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:06,910 INFO L470 AbstractCegarLoop]: Abstraction has 6996 states and 13087 transitions. [2021-11-23 14:14:06,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 14:14:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6996 states and 13087 transitions. [2021-11-23 14:14:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 14:14:06,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:06,912 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] [2021-11-23 14:14:06,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 14:14:06,913 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1484720170, now seen corresponding path program 1 times [2021-11-23 14:14:06,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:06,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732457261] [2021-11-23 14:14:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:06,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:06,955 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 14:14:06,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:06,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732457261] [2021-11-23 14:14:06,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732457261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:06,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:06,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 14:14:06,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784214155] [2021-11-23 14:14:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:06,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:06,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:06,958 INFO L87 Difference]: Start difference. First operand 6996 states and 13087 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 14:14:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:07,215 INFO L93 Difference]: Finished difference Result 13929 states and 26087 transitions. [2021-11-23 14:14:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-11-23 14:14:07,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:07,224 INFO L225 Difference]: With dead ends: 13929 [2021-11-23 14:14:07,224 INFO L226 Difference]: Without dead ends: 6974 [2021-11-23 14:14:07,230 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 14:14:07,231 INFO L933 BasicCegarLoop]: 13047 mSDtfsCounter, 13003 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13003 SdHoareTripleChecker+Valid, 13086 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:07,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13003 Valid, 13086 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:14:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2021-11-23 14:14:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6974. [2021-11-23 14:14:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6974 states, 6969 states have (on average 1.8725785622040465) internal successors, (13050), 6973 states have internal predecessors, (13050), 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 14:14:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6974 states to 6974 states and 13050 transitions. [2021-11-23 14:14:07,591 INFO L78 Accepts]: Start accepts. Automaton has 6974 states and 13050 transitions. Word has length 66 [2021-11-23 14:14:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:07,592 INFO L470 AbstractCegarLoop]: Abstraction has 6974 states and 13050 transitions. [2021-11-23 14:14:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 14:14:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 6974 states and 13050 transitions. [2021-11-23 14:14:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 14:14:07,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:07,593 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] [2021-11-23 14:14:07,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 14:14:07,594 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash 776217041, now seen corresponding path program 1 times [2021-11-23 14:14:07,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:07,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133096652] [2021-11-23 14:14:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:07,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:07,664 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 14:14:07,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:07,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133096652] [2021-11-23 14:14:07,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133096652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:07,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:07,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:07,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410853274] [2021-11-23 14:14:07,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:07,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:07,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:07,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:07,667 INFO L87 Difference]: Start difference. First operand 6974 states and 13050 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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 14:14:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:08,438 INFO L93 Difference]: Finished difference Result 15412 states and 28926 transitions. [2021-11-23 14:14:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:08,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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 68 [2021-11-23 14:14:08,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:08,453 INFO L225 Difference]: With dead ends: 15412 [2021-11-23 14:14:08,453 INFO L226 Difference]: Without dead ends: 11911 [2021-11-23 14:14:08,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:14:08,458 INFO L933 BasicCegarLoop]: 12981 mSDtfsCounter, 12516 mSDsluCounter, 9693 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12516 SdHoareTripleChecker+Valid, 22674 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:08,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12516 Valid, 22674 Invalid, 128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 14:14:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11911 states. [2021-11-23 14:14:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11911 to 9906. [2021-11-23 14:14:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9906 states, 9901 states have (on average 1.8771841228158772) internal successors, (18586), 9905 states have internal predecessors, (18586), 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 14:14:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9906 states to 9906 states and 18586 transitions. [2021-11-23 14:14:08,945 INFO L78 Accepts]: Start accepts. Automaton has 9906 states and 18586 transitions. Word has length 68 [2021-11-23 14:14:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:08,945 INFO L470 AbstractCegarLoop]: Abstraction has 9906 states and 18586 transitions. [2021-11-23 14:14:08,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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 14:14:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 9906 states and 18586 transitions. [2021-11-23 14:14:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 14:14:08,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:08,951 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] [2021-11-23 14:14:08,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 14:14:08,952 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1208732688, now seen corresponding path program 1 times [2021-11-23 14:14:08,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:08,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321775815] [2021-11-23 14:14:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:08,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:09,031 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 14:14:09,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:09,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321775815] [2021-11-23 14:14:09,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321775815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:09,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:09,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 14:14:09,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160071859] [2021-11-23 14:14:09,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:09,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 14:14:09,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:09,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 14:14:09,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 14:14:09,034 INFO L87 Difference]: Start difference. First operand 9906 states and 18586 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 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 14:14:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:10,118 INFO L93 Difference]: Finished difference Result 21713 states and 40537 transitions. [2021-11-23 14:14:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 14:14:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 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 88 [2021-11-23 14:14:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:10,136 INFO L225 Difference]: With dead ends: 21713 [2021-11-23 14:14:10,136 INFO L226 Difference]: Without dead ends: 13088 [2021-11-23 14:14:10,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 14:14:10,144 INFO L933 BasicCegarLoop]: 13348 mSDtfsCounter, 27843 mSDsluCounter, 46707 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27843 SdHoareTripleChecker+Valid, 60055 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:10,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27843 Valid, 60055 Invalid, 351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 14:14:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13088 states. [2021-11-23 14:14:10,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13088 to 8153. [2021-11-23 14:14:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 8148 states have (on average 1.8692930780559647) internal successors, (15231), 8152 states have internal predecessors, (15231), 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 14:14:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 15231 transitions. [2021-11-23 14:14:10,697 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 15231 transitions. Word has length 88 [2021-11-23 14:14:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:10,697 INFO L470 AbstractCegarLoop]: Abstraction has 8153 states and 15231 transitions. [2021-11-23 14:14:10,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 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 14:14:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 15231 transitions. [2021-11-23 14:14:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 14:14:10,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:10,705 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] [2021-11-23 14:14:10,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 14:14:10,705 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2039668086, now seen corresponding path program 1 times [2021-11-23 14:14:10,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:10,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738505374] [2021-11-23 14:14:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:10,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:10,784 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 14:14:10,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:10,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738505374] [2021-11-23 14:14:10,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738505374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:10,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:10,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:10,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65935794] [2021-11-23 14:14:10,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:10,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:10,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:10,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:10,787 INFO L87 Difference]: Start difference. First operand 8153 states and 15231 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 14:14:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:11,806 INFO L93 Difference]: Finished difference Result 19076 states and 35692 transitions. [2021-11-23 14:14:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:11,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 89 [2021-11-23 14:14:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:11,824 INFO L225 Difference]: With dead ends: 19076 [2021-11-23 14:14:11,824 INFO L226 Difference]: Without dead ends: 12259 [2021-11-23 14:14:11,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:14:11,832 INFO L933 BasicCegarLoop]: 10302 mSDtfsCounter, 9718 mSDsluCounter, 7470 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9718 SdHoareTripleChecker+Valid, 17772 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:11,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9718 Valid, 17772 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:14:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12259 states. [2021-11-23 14:14:12,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12259 to 12242. [2021-11-23 14:14:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12242 states, 12237 states have (on average 1.8649995914031217) internal successors, (22822), 12241 states have internal predecessors, (22822), 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 14:14:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12242 states to 12242 states and 22822 transitions. [2021-11-23 14:14:12,456 INFO L78 Accepts]: Start accepts. Automaton has 12242 states and 22822 transitions. Word has length 89 [2021-11-23 14:14:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:12,456 INFO L470 AbstractCegarLoop]: Abstraction has 12242 states and 22822 transitions. [2021-11-23 14:14:12,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 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 14:14:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 12242 states and 22822 transitions. [2021-11-23 14:14:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-23 14:14:12,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:12,460 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] [2021-11-23 14:14:12,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 14:14:12,461 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1579128482, now seen corresponding path program 1 times [2021-11-23 14:14:12,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:12,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277031189] [2021-11-23 14:14:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:12,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:12,509 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 14:14:12,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:12,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277031189] [2021-11-23 14:14:12,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277031189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:12,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:12,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:12,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308665934] [2021-11-23 14:14:12,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:12,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:12,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:12,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:12,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:12,512 INFO L87 Difference]: Start difference. First operand 12242 states and 22822 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 14:14:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:13,915 INFO L93 Difference]: Finished difference Result 30648 states and 57202 transitions. [2021-11-23 14:14:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:13,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 90 [2021-11-23 14:14:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:13,937 INFO L225 Difference]: With dead ends: 30648 [2021-11-23 14:14:13,937 INFO L226 Difference]: Without dead ends: 20347 [2021-11-23 14:14:13,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:14:13,944 INFO L933 BasicCegarLoop]: 9784 mSDtfsCounter, 9703 mSDsluCounter, 7493 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9703 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:13,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9703 Valid, 17277 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:14:13,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2021-11-23 14:14:14,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 20330. [2021-11-23 14:14:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20330 states, 20325 states have (on average 1.8623862238622386) internal successors, (37853), 20329 states have internal predecessors, (37853), 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 14:14:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20330 states to 20330 states and 37853 transitions. [2021-11-23 14:14:14,686 INFO L78 Accepts]: Start accepts. Automaton has 20330 states and 37853 transitions. Word has length 90 [2021-11-23 14:14:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:14,686 INFO L470 AbstractCegarLoop]: Abstraction has 20330 states and 37853 transitions. [2021-11-23 14:14:14,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 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 14:14:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20330 states and 37853 transitions. [2021-11-23 14:14:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 14:14:14,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:14,690 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] [2021-11-23 14:14:14,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 14:14:14,691 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 818989669, now seen corresponding path program 1 times [2021-11-23 14:14:14,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436425399] [2021-11-23 14:14:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:14,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:14,738 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 14:14:14,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:14,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436425399] [2021-11-23 14:14:14,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436425399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:14,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:14,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:14,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668914514] [2021-11-23 14:14:14,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:14,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:14,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:14,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:14,741 INFO L87 Difference]: Start difference. First operand 20330 states and 37853 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 14:14:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:16,428 INFO L93 Difference]: Finished difference Result 53612 states and 99895 transitions. [2021-11-23 14:14:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2021-11-23 14:14:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:16,475 INFO L225 Difference]: With dead ends: 53612 [2021-11-23 14:14:16,476 INFO L226 Difference]: Without dead ends: 36323 [2021-11-23 14:14:16,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:14:16,489 INFO L933 BasicCegarLoop]: 9770 mSDtfsCounter, 9688 mSDsluCounter, 7516 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9688 SdHoareTripleChecker+Valid, 17286 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:16,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9688 Valid, 17286 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:14:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36323 states. [2021-11-23 14:14:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36323 to 36306. [2021-11-23 14:14:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36306 states, 36301 states have (on average 1.8603068785983856) internal successors, (67531), 36305 states have internal predecessors, (67531), 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 14:14:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36306 states to 36306 states and 67531 transitions. [2021-11-23 14:14:18,080 INFO L78 Accepts]: Start accepts. Automaton has 36306 states and 67531 transitions. Word has length 91 [2021-11-23 14:14:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:18,081 INFO L470 AbstractCegarLoop]: Abstraction has 36306 states and 67531 transitions. [2021-11-23 14:14:18,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 14:14:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 36306 states and 67531 transitions. [2021-11-23 14:14:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 14:14:18,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:18,084 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] [2021-11-23 14:14:18,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 14:14:18,084 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:18,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1750807517, now seen corresponding path program 1 times [2021-11-23 14:14:18,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:18,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531929525] [2021-11-23 14:14:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:18,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:18,363 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 14:14:18,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:18,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531929525] [2021-11-23 14:14:18,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531929525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:18,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:18,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:18,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423776379] [2021-11-23 14:14:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:18,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:18,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:18,366 INFO L87 Difference]: Start difference. First operand 36306 states and 67531 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 14:14:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:14:21,268 INFO L93 Difference]: Finished difference Result 99140 states and 184464 transitions. [2021-11-23 14:14:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 14:14:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2021-11-23 14:14:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:14:21,359 INFO L225 Difference]: With dead ends: 99140 [2021-11-23 14:14:21,359 INFO L226 Difference]: Without dead ends: 67855 [2021-11-23 14:14:21,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:14:21,382 INFO L933 BasicCegarLoop]: 9756 mSDtfsCounter, 9673 mSDsluCounter, 7539 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9673 SdHoareTripleChecker+Valid, 17295 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 14:14:21,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9673 Valid, 17295 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 14:14:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67855 states. [2021-11-23 14:14:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67855 to 67838. [2021-11-23 14:14:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67838 states, 67833 states have (on average 1.8580484424984889) internal successors, (126037), 67837 states have internal predecessors, (126037), 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 14:14:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67838 states to 67838 states and 126037 transitions. [2021-11-23 14:14:24,512 INFO L78 Accepts]: Start accepts. Automaton has 67838 states and 126037 transitions. Word has length 92 [2021-11-23 14:14:24,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:14:24,513 INFO L470 AbstractCegarLoop]: Abstraction has 67838 states and 126037 transitions. [2021-11-23 14:14:24,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 14:14:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 67838 states and 126037 transitions. [2021-11-23 14:14:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 14:14:24,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:14:24,517 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] [2021-11-23 14:14:24,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 14:14:24,518 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 14:14:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:14:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash -701292992, now seen corresponding path program 1 times [2021-11-23 14:14:24,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:14:24,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7231897] [2021-11-23 14:14:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:14:24,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:14:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:14:24,580 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 14:14:24,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:14:24,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7231897] [2021-11-23 14:14:24,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7231897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:14:24,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:14:24,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:14:24,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248042832] [2021-11-23 14:14:24,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:14:24,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 14:14:24,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:14:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 14:14:24,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 14:14:24,584 INFO L87 Difference]: Start difference. First operand 67838 states and 126037 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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)