./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa --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 829096e7f479f5346a6eede2bd426bfcc729b36401312306aa48ba670b26d42a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:15:00,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:15:00,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:15:00,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:15:00,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:15:00,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:15:00,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:15:00,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:15:00,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:15:00,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:15:00,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:15:00,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:15:00,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:15:00,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:15:00,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:15:00,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:15:00,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:15:00,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:15:00,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:15:00,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:15:00,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:15:00,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:15:00,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:15:00,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:15:00,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:15:00,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:15:00,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:15:00,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:15:00,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:15:00,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:15:00,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:15:00,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:15:00,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:15:00,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:15:00,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:15:00,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:15:00,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:15:00,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:15:00,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:15:00,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:15:00,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:15:00,203 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:15:00,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:15:00,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:15:00,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:15:00,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:15:00,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:15:00,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:15:00,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:15:00,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:15:00,223 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:15:00,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:15:00,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:15:00,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:15:00,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:15:00,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:15:00,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:15:00,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:15:00,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:15:00,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:00,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:15:00,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:15:00,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:15:00,227 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_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 829096e7f479f5346a6eede2bd426bfcc729b36401312306aa48ba670b26d42a [2021-12-06 17:15:00,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:15:00,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:15:00,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:15:00,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:15:00,425 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:15:00,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/eca-rers2012/Problem13_label46.c [2021-12-06 17:15:00,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/data/f53072e01/1921cd64d69941929029fa9d5c475346/FLAGa44fd72be [2021-12-06 17:15:01,071 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:15:01,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/sv-benchmarks/c/eca-rers2012/Problem13_label46.c [2021-12-06 17:15:01,095 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/data/f53072e01/1921cd64d69941929029fa9d5c475346/FLAGa44fd72be [2021-12-06 17:15:01,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/data/f53072e01/1921cd64d69941929029fa9d5c475346 [2021-12-06 17:15:01,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:15:01,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:15:01,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:01,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:15:01,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:15:01,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:01" (1/1) ... [2021-12-06 17:15:01,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fc1221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:01, skipping insertion in model container [2021-12-06 17:15:01,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:01" (1/1) ... [2021-12-06 17:15:01,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:15:01,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:15:01,580 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_c1ab3ec0-07e7-4060-8228-548fb45cd8af/sv-benchmarks/c/eca-rers2012/Problem13_label46.c[9366,9379] [2021-12-06 17:15:02,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:15:02,272 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:15:02,302 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_c1ab3ec0-07e7-4060-8228-548fb45cd8af/sv-benchmarks/c/eca-rers2012/Problem13_label46.c[9366,9379] [2021-12-06 17:15:02,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:15:02,760 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:15:02,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02 WrapperNode [2021-12-06 17:15:02,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:02,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:15:02,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:15:02,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:15:02,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:02,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,148 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-12-06 17:15:03,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:15:03,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:15:03,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:15:03,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:15:03,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:15:03,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:15:03,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:15:03,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:15:03,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (1/1) ... [2021-12-06 17:15:03,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:03,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:03,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:15:03,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:15:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:15:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:15:03,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:15:03,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:15:03,667 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:15:03,668 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:15:07,210 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:15:07,225 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:15:07,225 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:15:07,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:07 BoogieIcfgContainer [2021-12-06 17:15:07,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:15:07,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:15:07,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:15:07,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:15:07,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:15:01" (1/3) ... [2021-12-06 17:15:07,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437439af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:15:07, skipping insertion in model container [2021-12-06 17:15:07,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:02" (2/3) ... [2021-12-06 17:15:07,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437439af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:15:07, skipping insertion in model container [2021-12-06 17:15:07,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:15:07" (3/3) ... [2021-12-06 17:15:07,233 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label46.c [2021-12-06 17:15:07,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:15:07,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:15:07,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:15:07,279 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 [2021-12-06 17:15:07,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:15:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2021-12-06 17:15:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:15:07,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:07,314 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] [2021-12-06 17:15:07,314 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2021-12-06 17:15:07,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:07,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457170200] [2021-12-06 17:15:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:07,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:15:07,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:07,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457170200] [2021-12-06 17:15:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457170200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:07,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:07,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:07,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930489067] [2021-12-06 17:15:07,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:07,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:15:07,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:15:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:15:07,602 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.5) 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) [2021-12-06 17:15:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:12,490 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2021-12-06 17:15:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:15:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) 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 [2021-12-06 17:15:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:12,516 INFO L225 Difference]: With dead ends: 3829 [2021-12-06 17:15:12,516 INFO L226 Difference]: Without dead ends: 2664 [2021-12-06 17:15:12,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:15:12,525 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 2658 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:12,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2658 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 17:15:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-12-06 17:15:12,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2021-12-06 17:15:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 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) [2021-12-06 17:15:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2021-12-06 17:15:12,633 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 66 [2021-12-06 17:15:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:12,633 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2021-12-06 17:15:12,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) 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) [2021-12-06 17:15:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2021-12-06 17:15:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-06 17:15:12,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:12,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:12,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:15:12,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1130712773, now seen corresponding path program 1 times [2021-12-06 17:15:12,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:12,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94179811] [2021-12-06 17:15:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:12,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:15:12,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:12,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94179811] [2021-12-06 17:15:12,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94179811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:12,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:12,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:12,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477509527] [2021-12-06 17:15:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:12,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:15:12,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:15:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:15:12,799 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-12-06 17:15:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:18,500 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2021-12-06 17:15:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:15:18,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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 191 [2021-12-06 17:15:18,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:18,527 INFO L225 Difference]: With dead ends: 7864 [2021-12-06 17:15:18,527 INFO L226 Difference]: Without dead ends: 5990 [2021-12-06 17:15:18,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:15:18,531 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 1613 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:18,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 17:15:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2021-12-06 17:15:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2021-12-06 17:15:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 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) [2021-12-06 17:15:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2021-12-06 17:15:18,626 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 191 [2021-12-06 17:15:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:18,627 INFO L470 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2021-12-06 17:15:18,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 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) [2021-12-06 17:15:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2021-12-06 17:15:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 17:15:18,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:18,630 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:18,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:15:18,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:18,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash -705330670, now seen corresponding path program 1 times [2021-12-06 17:15:18,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:18,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651439928] [2021-12-06 17:15:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:18,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-06 17:15:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:18,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651439928] [2021-12-06 17:15:18,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651439928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:18,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:18,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:15:18,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781835387] [2021-12-06 17:15:18,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:18,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:18,732 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:21,811 INFO L93 Difference]: Finished difference Result 15687 states and 23390 transitions. [2021-12-06 17:15:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-12-06 17:15:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:21,851 INFO L225 Difference]: With dead ends: 15687 [2021-12-06 17:15:21,851 INFO L226 Difference]: Without dead ends: 10617 [2021-12-06 17:15:21,857 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 [2021-12-06 17:15:21,859 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:21,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 17:15:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2021-12-06 17:15:21,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2021-12-06 17:15:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 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) [2021-12-06 17:15:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2021-12-06 17:15:22,029 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 233 [2021-12-06 17:15:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:22,029 INFO L470 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2021-12-06 17:15:22,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2021-12-06 17:15:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-06 17:15:22,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:22,032 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:22,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:15:22,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 55372431, now seen corresponding path program 1 times [2021-12-06 17:15:22,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:22,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269053632] [2021-12-06 17:15:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:22,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 17:15:22,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:22,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269053632] [2021-12-06 17:15:22,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269053632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:22,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:22,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:15:22,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712274166] [2021-12-06 17:15:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:22,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:22,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:22,122 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:25,070 INFO L93 Difference]: Finished difference Result 28351 states and 39240 transitions. [2021-12-06 17:15:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:25,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2021-12-06 17:15:25,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:25,112 INFO L225 Difference]: With dead ends: 28351 [2021-12-06 17:15:25,113 INFO L226 Difference]: Without dead ends: 18532 [2021-12-06 17:15:25,122 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 [2021-12-06 17:15:25,123 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:25,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 17:15:25,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2021-12-06 17:15:25,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2021-12-06 17:15:25,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3251268761472843) internal successors, (24544), 18522 states have internal predecessors, (24544), 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) [2021-12-06 17:15:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24544 transitions. [2021-12-06 17:15:25,370 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24544 transitions. Word has length 247 [2021-12-06 17:15:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:25,371 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 24544 transitions. [2021-12-06 17:15:25,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:15:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24544 transitions. [2021-12-06 17:15:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-12-06 17:15:25,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:25,375 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:25,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:15:25,375 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:25,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1367122238, now seen corresponding path program 1 times [2021-12-06 17:15:25,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:25,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320314949] [2021-12-06 17:15:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:25,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:15:25,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:25,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320314949] [2021-12-06 17:15:25,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320314949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:25,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:25,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:25,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523985337] [2021-12-06 17:15:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:25,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:25,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:25,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:25,457 INFO L87 Difference]: Start difference. First operand 18523 states and 24544 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-12-06 17:15:28,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:28,254 INFO L93 Difference]: Finished difference Result 52015 states and 69799 transitions. [2021-12-06 17:15:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:28,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 265 [2021-12-06 17:15:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:28,305 INFO L225 Difference]: With dead ends: 52015 [2021-12-06 17:15:28,305 INFO L226 Difference]: Without dead ends: 34281 [2021-12-06 17:15:28,324 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 [2021-12-06 17:15:28,324 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 852 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:28,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 951 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 17:15:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2021-12-06 17:15:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2021-12-06 17:15:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.25503355704698) internal successors, (43010), 34270 states have internal predecessors, (43010), 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) [2021-12-06 17:15:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43010 transitions. [2021-12-06 17:15:28,687 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43010 transitions. Word has length 265 [2021-12-06 17:15:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:28,688 INFO L470 AbstractCegarLoop]: Abstraction has 34271 states and 43010 transitions. [2021-12-06 17:15:28,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-12-06 17:15:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43010 transitions. [2021-12-06 17:15:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-12-06 17:15:28,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:28,695 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:28,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:15:28,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:28,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1842505555, now seen corresponding path program 1 times [2021-12-06 17:15:28,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:28,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5012906] [2021-12-06 17:15:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:28,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-06 17:15:28,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:28,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5012906] [2021-12-06 17:15:28,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5012906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:28,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:28,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:15:28,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416064140] [2021-12-06 17:15:28,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:28,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:28,826 INFO L87 Difference]: Start difference. First operand 34271 states and 43010 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2021-12-06 17:15:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:31,588 INFO L93 Difference]: Finished difference Result 92929 states and 117620 transitions. [2021-12-06 17:15:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:31,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 296 [2021-12-06 17:15:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:31,655 INFO L225 Difference]: With dead ends: 92929 [2021-12-06 17:15:31,655 INFO L226 Difference]: Without dead ends: 59447 [2021-12-06 17:15:31,677 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 [2021-12-06 17:15:31,678 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:31,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 17:15:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2021-12-06 17:15:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 57869. [2021-12-06 17:15:32,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57869 states, 57868 states have (on average 1.1960496301928527) internal successors, (69213), 57868 states have internal predecessors, (69213), 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) [2021-12-06 17:15:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57869 states to 57869 states and 69213 transitions. [2021-12-06 17:15:32,235 INFO L78 Accepts]: Start accepts. Automaton has 57869 states and 69213 transitions. Word has length 296 [2021-12-06 17:15:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:32,235 INFO L470 AbstractCegarLoop]: Abstraction has 57869 states and 69213 transitions. [2021-12-06 17:15:32,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2021-12-06 17:15:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 57869 states and 69213 transitions. [2021-12-06 17:15:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-12-06 17:15:32,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:32,242 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:32,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:15:32,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:32,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -149242170, now seen corresponding path program 1 times [2021-12-06 17:15:32,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:32,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921766092] [2021-12-06 17:15:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:32,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 17:15:32,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:32,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921766092] [2021-12-06 17:15:32,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921766092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:32,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:32,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:32,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841299700] [2021-12-06 17:15:32,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:32,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:15:32,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:32,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:15:32,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:15:32,375 INFO L87 Difference]: Start difference. First operand 57869 states and 69213 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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) [2021-12-06 17:15:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:38,816 INFO L93 Difference]: Finished difference Result 156098 states and 188760 transitions. [2021-12-06 17:15:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:15:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 334 [2021-12-06 17:15:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:38,926 INFO L225 Difference]: With dead ends: 156098 [2021-12-06 17:15:38,926 INFO L226 Difference]: Without dead ends: 99018 [2021-12-06 17:15:38,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:15:38,959 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:38,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 743 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-06 17:15:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99018 states. [2021-12-06 17:15:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99018 to 98888. [2021-12-06 17:15:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1899744152416394) internal successors, (117673), 98887 states have internal predecessors, (117673), 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) [2021-12-06 17:15:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117673 transitions. [2021-12-06 17:15:39,922 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117673 transitions. Word has length 334 [2021-12-06 17:15:39,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:39,923 INFO L470 AbstractCegarLoop]: Abstraction has 98888 states and 117673 transitions. [2021-12-06 17:15:39,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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) [2021-12-06 17:15:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117673 transitions. [2021-12-06 17:15:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-12-06 17:15:39,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:39,928 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:39,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:15:39,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:39,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:39,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1385907952, now seen corresponding path program 1 times [2021-12-06 17:15:39,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:39,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146084858] [2021-12-06 17:15:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:39,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-06 17:15:40,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146084858] [2021-12-06 17:15:40,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146084858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:40,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:40,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:15:40,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94981195] [2021-12-06 17:15:40,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:40,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:40,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:40,022 INFO L87 Difference]: Start difference. First operand 98888 states and 117673 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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) [2021-12-06 17:15:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:43,343 INFO L93 Difference]: Finished difference Result 182821 states and 219245 transitions. [2021-12-06 17:15:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:43,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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 349 [2021-12-06 17:15:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:43,447 INFO L225 Difference]: With dead ends: 182821 [2021-12-06 17:15:43,447 INFO L226 Difference]: Without dead ends: 98900 [2021-12-06 17:15:43,477 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 [2021-12-06 17:15:43,478 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:43,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 1202 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 17:15:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98900 states. [2021-12-06 17:15:44,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98900 to 98888. [2021-12-06 17:15:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98888 states, 98887 states have (on average 1.1890642854975881) internal successors, (117583), 98887 states have internal predecessors, (117583), 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) [2021-12-06 17:15:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98888 states to 98888 states and 117583 transitions. [2021-12-06 17:15:44,580 INFO L78 Accepts]: Start accepts. Automaton has 98888 states and 117583 transitions. Word has length 349 [2021-12-06 17:15:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:44,581 INFO L470 AbstractCegarLoop]: Abstraction has 98888 states and 117583 transitions. [2021-12-06 17:15:44,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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) [2021-12-06 17:15:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 98888 states and 117583 transitions. [2021-12-06 17:15:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-12-06 17:15:44,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:44,587 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:44,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:15:44,587 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -788002906, now seen corresponding path program 1 times [2021-12-06 17:15:44,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:44,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236718191] [2021-12-06 17:15:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:44,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 271 proven. 110 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 17:15:44,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:44,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236718191] [2021-12-06 17:15:44,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236718191] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:15:44,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283036742] [2021-12-06 17:15:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:44,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:44,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:44,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:44,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:15:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:15:44,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-06 17:15:45,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:15:45,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283036742] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:45,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:15:45,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-06 17:15:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628137758] [2021-12-06 17:15:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:15:45,275 INFO L87 Difference]: Start difference. First operand 98888 states and 117583 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2021-12-06 17:15:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:48,057 INFO L93 Difference]: Finished difference Result 196198 states and 233219 transitions. [2021-12-06 17:15:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:48,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 378 [2021-12-06 17:15:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:48,160 INFO L225 Difference]: With dead ends: 196198 [2021-12-06 17:15:48,160 INFO L226 Difference]: Without dead ends: 98099 [2021-12-06 17:15:48,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:15:48,186 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 1138 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:48,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 17:15:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98099 states. [2021-12-06 17:15:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98099 to 98098. [2021-12-06 17:15:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98098 states, 98097 states have (on average 1.1390460462603342) internal successors, (111737), 98097 states have internal predecessors, (111737), 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) [2021-12-06 17:15:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98098 states to 98098 states and 111737 transitions. [2021-12-06 17:15:49,196 INFO L78 Accepts]: Start accepts. Automaton has 98098 states and 111737 transitions. Word has length 378 [2021-12-06 17:15:49,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:49,197 INFO L470 AbstractCegarLoop]: Abstraction has 98098 states and 111737 transitions. [2021-12-06 17:15:49,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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) [2021-12-06 17:15:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 98098 states and 111737 transitions. [2021-12-06 17:15:49,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-12-06 17:15:49,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:49,201 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:49,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:15:49,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:49,402 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1962625282, now seen corresponding path program 1 times [2021-12-06 17:15:49,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:49,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176206214] [2021-12-06 17:15:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:49,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 17:15:49,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:49,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176206214] [2021-12-06 17:15:49,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176206214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:49,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:49,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:49,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400849572] [2021-12-06 17:15:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:49,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:49,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:49,504 INFO L87 Difference]: Start difference. First operand 98098 states and 111737 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2021-12-06 17:15:52,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:52,389 INFO L93 Difference]: Finished difference Result 193805 states and 220753 transitions. [2021-12-06 17:15:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:52,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 383 [2021-12-06 17:15:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:52,494 INFO L225 Difference]: With dead ends: 193805 [2021-12-06 17:15:52,494 INFO L226 Difference]: Without dead ends: 96496 [2021-12-06 17:15:52,537 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 [2021-12-06 17:15:52,538 INFO L933 BasicCegarLoop]: 1503 mSDtfsCounter, 1035 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:52,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 1639 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 17:15:52,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96496 states. [2021-12-06 17:15:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96496 to 91764. [2021-12-06 17:15:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91764 states, 91763 states have (on average 1.098634525898238) internal successors, (100814), 91763 states have internal predecessors, (100814), 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) [2021-12-06 17:15:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91764 states to 91764 states and 100814 transitions. [2021-12-06 17:15:53,532 INFO L78 Accepts]: Start accepts. Automaton has 91764 states and 100814 transitions. Word has length 383 [2021-12-06 17:15:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:53,532 INFO L470 AbstractCegarLoop]: Abstraction has 91764 states and 100814 transitions. [2021-12-06 17:15:53,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2021-12-06 17:15:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 91764 states and 100814 transitions. [2021-12-06 17:15:53,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-06 17:15:53,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:53,537 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:53,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 17:15:53,537 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:53,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash 357120976, now seen corresponding path program 1 times [2021-12-06 17:15:53,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:53,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695987206] [2021-12-06 17:15:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:53,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:53,636 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-06 17:15:53,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:53,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695987206] [2021-12-06 17:15:53,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695987206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:53,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:53,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:53,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822186271] [2021-12-06 17:15:53,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:53,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:53,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:53,637 INFO L87 Difference]: Start difference. First operand 91764 states and 100814 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-12-06 17:15:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:56,620 INFO L93 Difference]: Finished difference Result 215821 states and 236354 transitions. [2021-12-06 17:15:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:15:56,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 393 [2021-12-06 17:15:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:56,745 INFO L225 Difference]: With dead ends: 215821 [2021-12-06 17:15:56,745 INFO L226 Difference]: Without dead ends: 124846 [2021-12-06 17:15:56,773 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 [2021-12-06 17:15:56,774 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 798 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:56,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1140 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 17:15:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124846 states. [2021-12-06 17:15:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124846 to 120883. [2021-12-06 17:15:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120883 states, 120882 states have (on average 1.0858605913204613) internal successors, (131261), 120882 states have internal predecessors, (131261), 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) [2021-12-06 17:15:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120883 states to 120883 states and 131261 transitions. [2021-12-06 17:15:58,113 INFO L78 Accepts]: Start accepts. Automaton has 120883 states and 131261 transitions. Word has length 393 [2021-12-06 17:15:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:58,114 INFO L470 AbstractCegarLoop]: Abstraction has 120883 states and 131261 transitions. [2021-12-06 17:15:58,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-12-06 17:15:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 120883 states and 131261 transitions. [2021-12-06 17:15:58,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-12-06 17:15:58,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:58,119 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:58,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 17:15:58,120 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:15:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash -284013078, now seen corresponding path program 1 times [2021-12-06 17:15:58,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400830913] [2021-12-06 17:15:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:58,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-12-06 17:15:58,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:58,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400830913] [2021-12-06 17:15:58,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400830913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:58,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:58,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:15:58,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753254043] [2021-12-06 17:15:58,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:58,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:15:58,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:15:58,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:15:58,233 INFO L87 Difference]: Start difference. First operand 120883 states and 131261 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:16:02,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:02,292 INFO L93 Difference]: Finished difference Result 292276 states and 318578 transitions. [2021-12-06 17:16:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2021-12-06 17:16:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:02,471 INFO L225 Difference]: With dead ends: 292276 [2021-12-06 17:16:02,471 INFO L226 Difference]: Without dead ends: 171395 [2021-12-06 17:16:02,530 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 [2021-12-06 17:16:02,530 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 931 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:02,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 688 Invalid, 3728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 17:16:02,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171395 states. [2021-12-06 17:16:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171395 to 166557. [2021-12-06 17:16:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166557 states, 166556 states have (on average 1.0930738010038665) internal successors, (182058), 166556 states have internal predecessors, (182058), 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) [2021-12-06 17:16:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166557 states to 166557 states and 182058 transitions. [2021-12-06 17:16:04,473 INFO L78 Accepts]: Start accepts. Automaton has 166557 states and 182058 transitions. Word has length 395 [2021-12-06 17:16:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:04,474 INFO L470 AbstractCegarLoop]: Abstraction has 166557 states and 182058 transitions. [2021-12-06 17:16:04,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:16:04,474 INFO L276 IsEmpty]: Start isEmpty. Operand 166557 states and 182058 transitions. [2021-12-06 17:16:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-12-06 17:16:04,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:04,487 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:04,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 17:16:04,487 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1321188077, now seen corresponding path program 1 times [2021-12-06 17:16:04,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:04,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63327872] [2021-12-06 17:16:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:04,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 610 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-12-06 17:16:04,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:04,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63327872] [2021-12-06 17:16:04,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63327872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:04,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:04,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:16:04,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048920271] [2021-12-06 17:16:04,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:04,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:04,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:04,620 INFO L87 Difference]: Start difference. First operand 166557 states and 182058 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2021-12-06 17:16:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:08,411 INFO L93 Difference]: Finished difference Result 379554 states and 417502 transitions. [2021-12-06 17:16:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 469 [2021-12-06 17:16:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:08,649 INFO L225 Difference]: With dead ends: 379554 [2021-12-06 17:16:08,649 INFO L226 Difference]: Without dead ends: 213786 [2021-12-06 17:16:08,696 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 [2021-12-06 17:16:08,696 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 924 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:08,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 841 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 17:16:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213786 states. [2021-12-06 17:16:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213786 to 210617. [2021-12-06 17:16:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210617 states, 210616 states have (on average 1.0952539218293007) internal successors, (230678), 210616 states have internal predecessors, (230678), 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) [2021-12-06 17:16:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210617 states to 210617 states and 230678 transitions. [2021-12-06 17:16:11,153 INFO L78 Accepts]: Start accepts. Automaton has 210617 states and 230678 transitions. Word has length 469 [2021-12-06 17:16:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:11,153 INFO L470 AbstractCegarLoop]: Abstraction has 210617 states and 230678 transitions. [2021-12-06 17:16:11,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2021-12-06 17:16:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 210617 states and 230678 transitions. [2021-12-06 17:16:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-12-06 17:16:11,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:11,168 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:11,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 17:16:11,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:11,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:11,169 INFO L85 PathProgramCache]: Analyzing trace with hash 389350022, now seen corresponding path program 1 times [2021-12-06 17:16:11,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:11,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160457337] [2021-12-06 17:16:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:11,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-06 17:16:11,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:11,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160457337] [2021-12-06 17:16:11,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160457337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:11,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:11,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:16:11,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506614660] [2021-12-06 17:16:11,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:11,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:11,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:11,318 INFO L87 Difference]: Start difference. First operand 210617 states and 230678 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2021-12-06 17:16:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:15,224 INFO L93 Difference]: Finished difference Result 423596 states and 463739 transitions. [2021-12-06 17:16:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:15,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 470 [2021-12-06 17:16:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:15,516 INFO L225 Difference]: With dead ends: 423596 [2021-12-06 17:16:15,516 INFO L226 Difference]: Without dead ends: 213768 [2021-12-06 17:16:15,695 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 [2021-12-06 17:16:15,695 INFO L933 BasicCegarLoop]: 1382 mSDtfsCounter, 971 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:15,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 1468 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 17:16:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213768 states. [2021-12-06 17:16:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213768 to 210605. [2021-12-06 17:16:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210605 states, 210604 states have (on average 1.0712332149436858) internal successors, (225606), 210604 states have internal predecessors, (225606), 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) [2021-12-06 17:16:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210605 states to 210605 states and 225606 transitions. [2021-12-06 17:16:18,175 INFO L78 Accepts]: Start accepts. Automaton has 210605 states and 225606 transitions. Word has length 470 [2021-12-06 17:16:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:18,175 INFO L470 AbstractCegarLoop]: Abstraction has 210605 states and 225606 transitions. [2021-12-06 17:16:18,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2021-12-06 17:16:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 210605 states and 225606 transitions. [2021-12-06 17:16:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-12-06 17:16:18,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:18,194 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:18,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 17:16:18,194 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2028799798, now seen corresponding path program 1 times [2021-12-06 17:16:18,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:18,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172603350] [2021-12-06 17:16:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:18,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 365 proven. 113 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 17:16:18,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:18,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172603350] [2021-12-06 17:16:18,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172603350] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:18,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139389060] [2021-12-06 17:16:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:18,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:18,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:18,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:18,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:16:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:18,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:16:18,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-06 17:16:19,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:19,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139389060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:19,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:19,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 17:16:19,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53161450] [2021-12-06 17:16:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:19,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:19,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:16:19,473 INFO L87 Difference]: Start difference. First operand 210605 states and 225606 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 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) [2021-12-06 17:16:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:22,952 INFO L93 Difference]: Finished difference Result 407052 states and 436715 transitions. [2021-12-06 17:16:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:22,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 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 557 [2021-12-06 17:16:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:23,203 INFO L225 Difference]: With dead ends: 407052 [2021-12-06 17:16:23,203 INFO L226 Difference]: Without dead ends: 214553 [2021-12-06 17:16:23,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:16:23,276 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:23,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 1134 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 17:16:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214553 states. [2021-12-06 17:16:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214553 to 211393. [2021-12-06 17:16:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211393 states, 211392 states have (on average 1.0654565924916741) internal successors, (225229), 211392 states have internal predecessors, (225229), 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) [2021-12-06 17:16:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211393 states to 211393 states and 225229 transitions. [2021-12-06 17:16:25,865 INFO L78 Accepts]: Start accepts. Automaton has 211393 states and 225229 transitions. Word has length 557 [2021-12-06 17:16:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:25,866 INFO L470 AbstractCegarLoop]: Abstraction has 211393 states and 225229 transitions. [2021-12-06 17:16:25,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 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) [2021-12-06 17:16:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 211393 states and 225229 transitions. [2021-12-06 17:16:25,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-12-06 17:16:25,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:25,884 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:25,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:26,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:16:26,087 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2138163838, now seen corresponding path program 1 times [2021-12-06 17:16:26,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:26,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188669211] [2021-12-06 17:16:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:26,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-12-06 17:16:26,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:26,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188669211] [2021-12-06 17:16:26,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188669211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:26,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:26,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:16:26,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288981977] [2021-12-06 17:16:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:26,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:26,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:26,275 INFO L87 Difference]: Start difference. First operand 211393 states and 225229 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-06 17:16:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:29,974 INFO L93 Difference]: Finished difference Result 463725 states and 495658 transitions. [2021-12-06 17:16:29,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 608 [2021-12-06 17:16:29,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:30,277 INFO L225 Difference]: With dead ends: 463725 [2021-12-06 17:16:30,277 INFO L226 Difference]: Without dead ends: 251547 [2021-12-06 17:16:30,365 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 [2021-12-06 17:16:30,365 INFO L933 BasicCegarLoop]: 1727 mSDtfsCounter, 704 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:30,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1870 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:16:30,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251547 states. [2021-12-06 17:16:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251547 to 247592. [2021-12-06 17:16:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247592 states, 247591 states have (on average 1.0587258826047796) internal successors, (262131), 247591 states have internal predecessors, (262131), 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) [2021-12-06 17:16:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247592 states to 247592 states and 262131 transitions. [2021-12-06 17:16:33,069 INFO L78 Accepts]: Start accepts. Automaton has 247592 states and 262131 transitions. Word has length 608 [2021-12-06 17:16:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:33,069 INFO L470 AbstractCegarLoop]: Abstraction has 247592 states and 262131 transitions. [2021-12-06 17:16:33,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-06 17:16:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 247592 states and 262131 transitions. [2021-12-06 17:16:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-12-06 17:16:33,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:33,085 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:33,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 17:16:33,085 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:33,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:33,086 INFO L85 PathProgramCache]: Analyzing trace with hash 922010112, now seen corresponding path program 1 times [2021-12-06 17:16:33,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:33,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055428078] [2021-12-06 17:16:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:33,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-12-06 17:16:33,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055428078] [2021-12-06 17:16:33,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055428078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:33,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:33,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:16:33,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046106676] [2021-12-06 17:16:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:33,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:33,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:33,273 INFO L87 Difference]: Start difference. First operand 247592 states and 262131 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-06 17:16:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:38,356 INFO L93 Difference]: Finished difference Result 534668 states and 566128 transitions. [2021-12-06 17:16:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:38,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 608 [2021-12-06 17:16:38,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:38,683 INFO L225 Difference]: With dead ends: 534668 [2021-12-06 17:16:38,684 INFO L226 Difference]: Without dead ends: 287865 [2021-12-06 17:16:38,774 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 [2021-12-06 17:16:38,775 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 795 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:38,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 862 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 17:16:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287865 states. [2021-12-06 17:16:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287865 to 260980. [2021-12-06 17:16:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260980 states, 260979 states have (on average 1.0586177431900652) internal successors, (276277), 260979 states have internal predecessors, (276277), 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) [2021-12-06 17:16:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260980 states to 260980 states and 276277 transitions. [2021-12-06 17:16:41,712 INFO L78 Accepts]: Start accepts. Automaton has 260980 states and 276277 transitions. Word has length 608 [2021-12-06 17:16:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:41,712 INFO L470 AbstractCegarLoop]: Abstraction has 260980 states and 276277 transitions. [2021-12-06 17:16:41,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2021-12-06 17:16:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 260980 states and 276277 transitions. [2021-12-06 17:16:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2021-12-06 17:16:41,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:41,727 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 17:16:41,727 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:41,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1008266340, now seen corresponding path program 1 times [2021-12-06 17:16:41,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:41,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74801467] [2021-12-06 17:16:41,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:41,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-12-06 17:16:42,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:42,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74801467] [2021-12-06 17:16:42,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74801467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:42,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:42,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:16:42,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610304456] [2021-12-06 17:16:42,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:42,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:42,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:42,023 INFO L87 Difference]: Start difference. First operand 260980 states and 276277 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 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) [2021-12-06 17:16:45,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:45,037 INFO L93 Difference]: Finished difference Result 495178 states and 525050 transitions. [2021-12-06 17:16:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 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 650 [2021-12-06 17:16:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:45,331 INFO L225 Difference]: With dead ends: 495178 [2021-12-06 17:16:45,331 INFO L226 Difference]: Without dead ends: 256242 [2021-12-06 17:16:45,407 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 [2021-12-06 17:16:45,408 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 1600 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:45,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 290 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 17:16:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256242 states. [2021-12-06 17:16:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256242 to 256241. [2021-12-06 17:16:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256241 states, 256240 states have (on average 1.0585271620355916) internal successors, (271237), 256240 states have internal predecessors, (271237), 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) [2021-12-06 17:16:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256241 states to 256241 states and 271237 transitions. [2021-12-06 17:16:48,188 INFO L78 Accepts]: Start accepts. Automaton has 256241 states and 271237 transitions. Word has length 650 [2021-12-06 17:16:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:48,189 INFO L470 AbstractCegarLoop]: Abstraction has 256241 states and 271237 transitions. [2021-12-06 17:16:48,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 2 states have internal predecessors, (322), 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) [2021-12-06 17:16:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 256241 states and 271237 transitions. [2021-12-06 17:16:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2021-12-06 17:16:48,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:48,209 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:48,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 17:16:48,210 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1522002881, now seen corresponding path program 1 times [2021-12-06 17:16:48,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:48,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357750722] [2021-12-06 17:16:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:48,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 1016 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-06 17:16:48,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:48,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357750722] [2021-12-06 17:16:48,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357750722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:48,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:48,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:16:48,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314297016] [2021-12-06 17:16:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:48,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:48,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:48,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:48,365 INFO L87 Difference]: Start difference. First operand 256241 states and 271237 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:16:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:52,056 INFO L93 Difference]: Finished difference Result 496743 states and 526576 transitions. [2021-12-06 17:16:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 688 [2021-12-06 17:16:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:52,450 INFO L225 Difference]: With dead ends: 496743 [2021-12-06 17:16:52,450 INFO L226 Difference]: Without dead ends: 262546 [2021-12-06 17:16:52,526 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 [2021-12-06 17:16:52,527 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 678 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:52,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1830 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 17:16:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262546 states. [2021-12-06 17:16:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262546 to 262537. [2021-12-06 17:16:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262537 states, 262536 states have (on average 1.057523539628851) internal successors, (277638), 262536 states have internal predecessors, (277638), 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) [2021-12-06 17:16:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262537 states to 262537 states and 277638 transitions. [2021-12-06 17:16:55,446 INFO L78 Accepts]: Start accepts. Automaton has 262537 states and 277638 transitions. Word has length 688 [2021-12-06 17:16:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:55,447 INFO L470 AbstractCegarLoop]: Abstraction has 262537 states and 277638 transitions. [2021-12-06 17:16:55,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:16:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 262537 states and 277638 transitions. [2021-12-06 17:16:55,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2021-12-06 17:16:55,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:55,469 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:55,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 17:16:55,469 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:55,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash -530955192, now seen corresponding path program 1 times [2021-12-06 17:16:55,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:55,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280710918] [2021-12-06 17:16:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:55,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 955 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-06 17:16:55,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:55,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280710918] [2021-12-06 17:16:55,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280710918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:55,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:55,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:16:55,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733894982] [2021-12-06 17:16:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:55,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:16:55,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:16:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:16:55,624 INFO L87 Difference]: Start difference. First operand 262537 states and 277638 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2021-12-06 17:16:59,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:59,200 INFO L93 Difference]: Finished difference Result 504626 states and 534421 transitions. [2021-12-06 17:16:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:16:59,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 690 [2021-12-06 17:16:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:59,500 INFO L225 Difference]: With dead ends: 504626 [2021-12-06 17:16:59,500 INFO L226 Difference]: Without dead ends: 262554 [2021-12-06 17:16:59,589 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 [2021-12-06 17:16:59,589 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 766 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:59,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1763 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 17:16:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262554 states. [2021-12-06 17:17:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262554 to 259385. [2021-12-06 17:17:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259385 states, 259384 states have (on average 1.054984116213799) internal successors, (273646), 259384 states have internal predecessors, (273646), 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) [2021-12-06 17:17:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259385 states to 259385 states and 273646 transitions. [2021-12-06 17:17:02,582 INFO L78 Accepts]: Start accepts. Automaton has 259385 states and 273646 transitions. Word has length 690 [2021-12-06 17:17:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:02,583 INFO L470 AbstractCegarLoop]: Abstraction has 259385 states and 273646 transitions. [2021-12-06 17:17:02,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2021-12-06 17:17:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 259385 states and 273646 transitions. [2021-12-06 17:17:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2021-12-06 17:17:02,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:02,598 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:02,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 17:17:02,598 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1217795527, now seen corresponding path program 1 times [2021-12-06 17:17:02,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:02,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030424787] [2021-12-06 17:17:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:02,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 840 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2021-12-06 17:17:02,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:02,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030424787] [2021-12-06 17:17:02,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030424787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:02,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:02,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:17:02,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701098535] [2021-12-06 17:17:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:02,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:17:02,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:17:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:02,765 INFO L87 Difference]: Start difference. First operand 259385 states and 273646 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2021-12-06 17:17:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:07,097 INFO L93 Difference]: Finished difference Result 553390 states and 584799 transitions. [2021-12-06 17:17:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:17:07,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 695 [2021-12-06 17:17:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:07,458 INFO L225 Difference]: With dead ends: 553390 [2021-12-06 17:17:07,458 INFO L226 Difference]: Without dead ends: 316049 [2021-12-06 17:17:07,555 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 [2021-12-06 17:17:07,556 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 827 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:07,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 559 Invalid, 3262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 17:17:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316049 states. [2021-12-06 17:17:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316049 to 237330. [2021-12-06 17:17:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237330 states, 237329 states have (on average 1.0496694462117988) internal successors, (249117), 237329 states have internal predecessors, (249117), 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) [2021-12-06 17:17:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237330 states to 237330 states and 249117 transitions. [2021-12-06 17:17:10,694 INFO L78 Accepts]: Start accepts. Automaton has 237330 states and 249117 transitions. Word has length 695 [2021-12-06 17:17:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:10,694 INFO L470 AbstractCegarLoop]: Abstraction has 237330 states and 249117 transitions. [2021-12-06 17:17:10,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2021-12-06 17:17:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 237330 states and 249117 transitions. [2021-12-06 17:17:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2021-12-06 17:17:10,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:10,714 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:10,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 17:17:10,714 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:10,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash -41927130, now seen corresponding path program 1 times [2021-12-06 17:17:10,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:10,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872440993] [2021-12-06 17:17:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:10,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2021-12-06 17:17:10,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:10,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872440993] [2021-12-06 17:17:10,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872440993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:10,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:10,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:17:10,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095847665] [2021-12-06 17:17:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:10,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:17:10,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:17:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:10,896 INFO L87 Difference]: Start difference. First operand 237330 states and 249117 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2021-12-06 17:17:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:15,221 INFO L93 Difference]: Finished difference Result 510206 states and 536542 transitions. [2021-12-06 17:17:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:17:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 720 [2021-12-06 17:17:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:15,549 INFO L225 Difference]: With dead ends: 510206 [2021-12-06 17:17:15,549 INFO L226 Difference]: Without dead ends: 293346 [2021-12-06 17:17:15,636 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 [2021-12-06 17:17:15,636 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 972 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:15,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 340 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 17:17:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293346 states. [2021-12-06 17:17:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293346 to 240486. [2021-12-06 17:17:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240486 states, 240485 states have (on average 1.0491964155768552) internal successors, (252316), 240485 states have internal predecessors, (252316), 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) [2021-12-06 17:17:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240486 states to 240486 states and 252316 transitions. [2021-12-06 17:17:18,397 INFO L78 Accepts]: Start accepts. Automaton has 240486 states and 252316 transitions. Word has length 720 [2021-12-06 17:17:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:18,398 INFO L470 AbstractCegarLoop]: Abstraction has 240486 states and 252316 transitions. [2021-12-06 17:17:18,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2021-12-06 17:17:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 240486 states and 252316 transitions. [2021-12-06 17:17:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2021-12-06 17:17:18,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:18,579 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:18,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 17:17:18,579 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash -915315584, now seen corresponding path program 1 times [2021-12-06 17:17:18,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:18,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474109522] [2021-12-06 17:17:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:18,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 736 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2021-12-06 17:17:18,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:18,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474109522] [2021-12-06 17:17:18,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474109522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:18,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:18,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:17:18,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369859114] [2021-12-06 17:17:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:18,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:17:18,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:17:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:18,807 INFO L87 Difference]: Start difference. First operand 240486 states and 252316 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2021-12-06 17:17:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:22,319 INFO L93 Difference]: Finished difference Result 460464 states and 483918 transitions. [2021-12-06 17:17:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:17:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 780 [2021-12-06 17:17:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:22,591 INFO L225 Difference]: With dead ends: 460464 [2021-12-06 17:17:22,591 INFO L226 Difference]: Without dead ends: 241235 [2021-12-06 17:17:22,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:22,668 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 997 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:22,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 335 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 17:17:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241235 states. [2021-12-06 17:17:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241235 to 239661. [2021-12-06 17:17:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239661 states, 239660 states have (on average 1.0454936159559376) internal successors, (250563), 239660 states have internal predecessors, (250563), 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) [2021-12-06 17:17:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239661 states to 239661 states and 250563 transitions. [2021-12-06 17:17:25,213 INFO L78 Accepts]: Start accepts. Automaton has 239661 states and 250563 transitions. Word has length 780 [2021-12-06 17:17:25,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:25,214 INFO L470 AbstractCegarLoop]: Abstraction has 239661 states and 250563 transitions. [2021-12-06 17:17:25,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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) [2021-12-06 17:17:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 239661 states and 250563 transitions. [2021-12-06 17:17:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2021-12-06 17:17:25,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:25,239 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:25,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 17:17:25,240 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1545363932, now seen corresponding path program 1 times [2021-12-06 17:17:25,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:25,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367750294] [2021-12-06 17:17:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:25,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 1356 proven. 0 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2021-12-06 17:17:25,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:25,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367750294] [2021-12-06 17:17:25,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367750294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:25,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:25,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:17:25,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678512835] [2021-12-06 17:17:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:25,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:17:25,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:17:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:25,442 INFO L87 Difference]: Start difference. First operand 239661 states and 250563 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2021-12-06 17:17:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:29,266 INFO L93 Difference]: Finished difference Result 477747 states and 499512 transitions. [2021-12-06 17:17:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:17:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 794 [2021-12-06 17:17:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:29,524 INFO L225 Difference]: With dead ends: 477747 [2021-12-06 17:17:29,524 INFO L226 Difference]: Without dead ends: 238875 [2021-12-06 17:17:29,607 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 [2021-12-06 17:17:29,607 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 774 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:29,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 1722 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:17:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238875 states. [2021-12-06 17:17:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238875 to 233359. [2021-12-06 17:17:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233359 states, 233358 states have (on average 1.0365575639146718) internal successors, (241889), 233358 states have internal predecessors, (241889), 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) [2021-12-06 17:17:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233359 states to 233359 states and 241889 transitions. [2021-12-06 17:17:32,302 INFO L78 Accepts]: Start accepts. Automaton has 233359 states and 241889 transitions. Word has length 794 [2021-12-06 17:17:32,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:32,303 INFO L470 AbstractCegarLoop]: Abstraction has 233359 states and 241889 transitions. [2021-12-06 17:17:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2021-12-06 17:17:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 233359 states and 241889 transitions. [2021-12-06 17:17:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2021-12-06 17:17:32,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:32,328 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:32,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 17:17:32,328 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash 574641080, now seen corresponding path program 1 times [2021-12-06 17:17:32,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:32,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384194080] [2021-12-06 17:17:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:32,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 1508 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-12-06 17:17:32,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:32,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384194080] [2021-12-06 17:17:32,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384194080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:32,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:32,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:17:32,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103710228] [2021-12-06 17:17:32,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:32,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:17:32,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:17:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:17:32,514 INFO L87 Difference]: Start difference. First operand 233359 states and 241889 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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) [2021-12-06 17:17:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:39,047 INFO L93 Difference]: Finished difference Result 538505 states and 558333 transitions. [2021-12-06 17:17:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:17:39,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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 826 [2021-12-06 17:17:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:39,382 INFO L225 Difference]: With dead ends: 538505 [2021-12-06 17:17:39,382 INFO L226 Difference]: Without dead ends: 305935 [2021-12-06 17:17:39,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:17:39,479 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1696 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 6158 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 7067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 6158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:39,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 911 Invalid, 7067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 6158 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-06 17:17:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305935 states. [2021-12-06 17:17:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305935 to 255406. [2021-12-06 17:17:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255406 states, 255405 states have (on average 1.034823124057869) internal successors, (264299), 255405 states have internal predecessors, (264299), 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) [2021-12-06 17:17:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255406 states to 255406 states and 264299 transitions. [2021-12-06 17:17:42,577 INFO L78 Accepts]: Start accepts. Automaton has 255406 states and 264299 transitions. Word has length 826 [2021-12-06 17:17:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:42,578 INFO L470 AbstractCegarLoop]: Abstraction has 255406 states and 264299 transitions. [2021-12-06 17:17:42,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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) [2021-12-06 17:17:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 255406 states and 264299 transitions. [2021-12-06 17:17:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2021-12-06 17:17:42,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:42,604 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:42,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 17:17:42,604 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 692569671, now seen corresponding path program 1 times [2021-12-06 17:17:42,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707870083] [2021-12-06 17:17:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:42,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 1908 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2021-12-06 17:17:42,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707870083] [2021-12-06 17:17:42,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707870083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:42,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:42,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:17:42,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130455931] [2021-12-06 17:17:42,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:42,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:17:42,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:17:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:42,785 INFO L87 Difference]: Start difference. First operand 255406 states and 264299 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2021-12-06 17:17:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:46,382 INFO L93 Difference]: Finished difference Result 506095 states and 523641 transitions. [2021-12-06 17:17:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:17:46,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 846 [2021-12-06 17:17:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:46,774 INFO L225 Difference]: With dead ends: 506095 [2021-12-06 17:17:46,774 INFO L226 Difference]: Without dead ends: 249903 [2021-12-06 17:17:46,849 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 [2021-12-06 17:17:46,850 INFO L933 BasicCegarLoop]: 1576 mSDtfsCounter, 753 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:46,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1693 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 17:17:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249903 states. [2021-12-06 17:17:48,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249903 to 241999. [2021-12-06 17:17:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241999 states, 241998 states have (on average 1.029351482243655) internal successors, (249101), 241998 states have internal predecessors, (249101), 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) [2021-12-06 17:17:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241999 states to 241999 states and 249101 transitions. [2021-12-06 17:17:49,490 INFO L78 Accepts]: Start accepts. Automaton has 241999 states and 249101 transitions. Word has length 846 [2021-12-06 17:17:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:49,491 INFO L470 AbstractCegarLoop]: Abstraction has 241999 states and 249101 transitions. [2021-12-06 17:17:49,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2021-12-06 17:17:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 241999 states and 249101 transitions. [2021-12-06 17:17:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2021-12-06 17:17:49,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:49,518 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:49,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 17:17:49,518 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1974585827, now seen corresponding path program 1 times [2021-12-06 17:17:49,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:49,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553091311] [2021-12-06 17:17:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:49,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1516 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2021-12-06 17:17:49,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553091311] [2021-12-06 17:17:49,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553091311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:49,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:49,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:17:49,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123847283] [2021-12-06 17:17:49,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:49,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:17:49,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:49,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:17:49,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:17:49,749 INFO L87 Difference]: Start difference. First operand 241999 states and 249101 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2021-12-06 17:17:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:53,667 INFO L93 Difference]: Finished difference Result 495034 states and 509717 transitions. [2021-12-06 17:17:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:17:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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 856 [2021-12-06 17:17:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:53,966 INFO L225 Difference]: With dead ends: 495034 [2021-12-06 17:17:53,966 INFO L226 Difference]: Without dead ends: 262485 [2021-12-06 17:17:54,066 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 [2021-12-06 17:17:54,066 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 454 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:54,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1853 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:17:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262485 states. [2021-12-06 17:17:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262485 to 258547. [2021-12-06 17:17:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258547 states, 258546 states have (on average 1.0282541598013506) internal successors, (265851), 258546 states have internal predecessors, (265851), 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) [2021-12-06 17:17:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258547 states to 258547 states and 265851 transitions. [2021-12-06 17:17:56,758 INFO L78 Accepts]: Start accepts. Automaton has 258547 states and 265851 transitions. Word has length 856 [2021-12-06 17:17:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:56,759 INFO L470 AbstractCegarLoop]: Abstraction has 258547 states and 265851 transitions. [2021-12-06 17:17:56,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2021-12-06 17:17:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 258547 states and 265851 transitions. [2021-12-06 17:17:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2021-12-06 17:17:56,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:56,789 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:56,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 17:17:56,790 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:17:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash 563992426, now seen corresponding path program 1 times [2021-12-06 17:17:56,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:56,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693399874] [2021-12-06 17:17:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:56,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 1428 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2021-12-06 17:17:57,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:57,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693399874] [2021-12-06 17:17:57,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693399874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:17:57,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:17:57,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:17:57,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921824858] [2021-12-06 17:17:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:17:57,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:17:57,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:17:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:17:57,026 INFO L87 Difference]: Start difference. First operand 258547 states and 265851 transitions. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 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) [2021-12-06 17:18:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:04,619 INFO L93 Difference]: Finished difference Result 587295 states and 604350 transitions. [2021-12-06 17:18:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 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 869 [2021-12-06 17:18:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:05,135 INFO L225 Difference]: With dead ends: 587295 [2021-12-06 17:18:05,135 INFO L226 Difference]: Without dead ends: 334261 [2021-12-06 17:18:05,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:05,182 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1669 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 5081 mSolverCounterSat, 1170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 6251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1170 IncrementalHoareTripleChecker+Valid, 5081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:05,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 407 Invalid, 6251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1170 Valid, 5081 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-12-06 17:18:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334261 states. [2021-12-06 17:18:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334261 to 313669. [2021-12-06 17:18:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313669 states, 313668 states have (on average 1.0284600278000944) internal successors, (322595), 313668 states have internal predecessors, (322595), 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) [2021-12-06 17:18:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313669 states to 313669 states and 322595 transitions. [2021-12-06 17:18:08,465 INFO L78 Accepts]: Start accepts. Automaton has 313669 states and 322595 transitions. Word has length 869 [2021-12-06 17:18:08,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:08,466 INFO L470 AbstractCegarLoop]: Abstraction has 313669 states and 322595 transitions. [2021-12-06 17:18:08,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 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) [2021-12-06 17:18:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 313669 states and 322595 transitions. [2021-12-06 17:18:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2021-12-06 17:18:08,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:08,684 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:08,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 17:18:08,685 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash 301366697, now seen corresponding path program 1 times [2021-12-06 17:18:08,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:08,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243437331] [2021-12-06 17:18:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:08,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2021-12-06 17:18:08,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:08,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243437331] [2021-12-06 17:18:08,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243437331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:08,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:08,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:08,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882046566] [2021-12-06 17:18:08,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:08,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:08,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:08,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:08,940 INFO L87 Difference]: Start difference. First operand 313669 states and 322595 transitions. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2021-12-06 17:18:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:12,940 INFO L93 Difference]: Finished difference Result 628926 states and 647132 transitions. [2021-12-06 17:18:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:12,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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 872 [2021-12-06 17:18:12,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:13,293 INFO L225 Difference]: With dead ends: 628926 [2021-12-06 17:18:13,294 INFO L226 Difference]: Without dead ends: 330218 [2021-12-06 17:18:13,398 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 [2021-12-06 17:18:13,398 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 419 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:13,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 1763 Invalid, 2534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:18:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330218 states. [2021-12-06 17:18:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330218 to 329413. [2021-12-06 17:18:16,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329413 states, 329412 states have (on average 1.0278556943887898) internal successors, (338588), 329412 states have internal predecessors, (338588), 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) [2021-12-06 17:18:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329413 states to 329413 states and 338588 transitions. [2021-12-06 17:18:16,991 INFO L78 Accepts]: Start accepts. Automaton has 329413 states and 338588 transitions. Word has length 872 [2021-12-06 17:18:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:16,992 INFO L470 AbstractCegarLoop]: Abstraction has 329413 states and 338588 transitions. [2021-12-06 17:18:16,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2021-12-06 17:18:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 329413 states and 338588 transitions. [2021-12-06 17:18:17,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2021-12-06 17:18:17,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:17,039 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:17,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 17:18:17,039 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:17,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash -724306717, now seen corresponding path program 1 times [2021-12-06 17:18:17,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:17,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038505324] [2021-12-06 17:18:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:17,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3006 backedges. 2064 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2021-12-06 17:18:17,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:17,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038505324] [2021-12-06 17:18:17,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038505324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:17,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:17,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:17,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920558804] [2021-12-06 17:18:17,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:17,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:17,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:17,269 INFO L87 Difference]: Start difference. First operand 329413 states and 338588 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2021-12-06 17:18:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:21,486 INFO L93 Difference]: Finished difference Result 645462 states and 663759 transitions. [2021-12-06 17:18:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 917 [2021-12-06 17:18:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:21,825 INFO L225 Difference]: With dead ends: 645462 [2021-12-06 17:18:21,825 INFO L226 Difference]: Without dead ends: 332584 [2021-12-06 17:18:21,925 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 [2021-12-06 17:18:21,925 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 700 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:21,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 1742 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:18:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332584 states. [2021-12-06 17:18:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332584 to 331774. [2021-12-06 17:18:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331774 states, 331773 states have (on average 1.0274283923043768) internal successors, (340873), 331773 states have internal predecessors, (340873), 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) [2021-12-06 17:18:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331774 states to 331774 states and 340873 transitions. [2021-12-06 17:18:25,622 INFO L78 Accepts]: Start accepts. Automaton has 331774 states and 340873 transitions. Word has length 917 [2021-12-06 17:18:25,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:25,623 INFO L470 AbstractCegarLoop]: Abstraction has 331774 states and 340873 transitions. [2021-12-06 17:18:25,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2021-12-06 17:18:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 331774 states and 340873 transitions. [2021-12-06 17:18:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2021-12-06 17:18:25,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:25,671 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:25,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 17:18:25,672 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2045224393, now seen corresponding path program 1 times [2021-12-06 17:18:25,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:25,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054996799] [2021-12-06 17:18:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:25,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 766 proven. 100 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-12-06 17:18:26,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:26,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054996799] [2021-12-06 17:18:26,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054996799] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:18:26,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493665421] [2021-12-06 17:18:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:26,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:18:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:18:26,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:18:26,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:18:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:26,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:18:26,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:18:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 1046 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-12-06 17:18:27,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:18:27,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493665421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:27,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:18:27,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-12-06 17:18:27,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035631271] [2021-12-06 17:18:27,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:27,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:27,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:27,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:27,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:27,778 INFO L87 Difference]: Start difference. First operand 331774 states and 340873 transitions. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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) [2021-12-06 17:18:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:32,126 INFO L93 Difference]: Finished difference Result 647813 states and 665853 transitions. [2021-12-06 17:18:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:18:32,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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 925 [2021-12-06 17:18:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:32,489 INFO L225 Difference]: With dead ends: 647813 [2021-12-06 17:18:32,489 INFO L226 Difference]: Without dead ends: 331787 [2021-12-06 17:18:32,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:18:32,609 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1320 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 4446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:32,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 730 Invalid, 4446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 17:18:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331787 states. [2021-12-06 17:18:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331787 to 330987. [2021-12-06 17:18:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330987 states, 330986 states have (on average 1.0269528016290719) internal successors, (339907), 330986 states have internal predecessors, (339907), 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) [2021-12-06 17:18:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330987 states to 330987 states and 339907 transitions. [2021-12-06 17:18:36,180 INFO L78 Accepts]: Start accepts. Automaton has 330987 states and 339907 transitions. Word has length 925 [2021-12-06 17:18:36,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:36,180 INFO L470 AbstractCegarLoop]: Abstraction has 330987 states and 339907 transitions. [2021-12-06 17:18:36,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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) [2021-12-06 17:18:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 330987 states and 339907 transitions. [2021-12-06 17:18:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2021-12-06 17:18:36,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:36,228 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:36,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:18:36,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:18:36,430 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1970995484, now seen corresponding path program 1 times [2021-12-06 17:18:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381045767] [2021-12-06 17:18:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:36,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 959 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-06 17:18:36,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:36,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381045767] [2021-12-06 17:18:36,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381045767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:36,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:36,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:36,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063239362] [2021-12-06 17:18:36,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:36,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:36,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:36,690 INFO L87 Difference]: Start difference. First operand 330987 states and 339907 transitions. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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) [2021-12-06 17:18:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:41,691 INFO L93 Difference]: Finished difference Result 716301 states and 736271 transitions. [2021-12-06 17:18:41,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:41,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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 925 [2021-12-06 17:18:41,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:42,310 INFO L225 Difference]: With dead ends: 716301 [2021-12-06 17:18:42,310 INFO L226 Difference]: Without dead ends: 400275 [2021-12-06 17:18:42,406 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 [2021-12-06 17:18:42,407 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 943 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:42,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 576 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 17:18:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400275 states. [2021-12-06 17:18:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400275 to 390031. [2021-12-06 17:18:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390031 states, 390030 states have (on average 1.0248237315078328) internal successors, (399712), 390030 states have internal predecessors, (399712), 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) [2021-12-06 17:18:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390031 states to 390031 states and 399712 transitions. [2021-12-06 17:18:46,582 INFO L78 Accepts]: Start accepts. Automaton has 390031 states and 399712 transitions. Word has length 925 [2021-12-06 17:18:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:46,582 INFO L470 AbstractCegarLoop]: Abstraction has 390031 states and 399712 transitions. [2021-12-06 17:18:46,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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) [2021-12-06 17:18:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 390031 states and 399712 transitions. [2021-12-06 17:18:46,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2021-12-06 17:18:46,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:46,628 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:46,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 17:18:46,629 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -103555815, now seen corresponding path program 1 times [2021-12-06 17:18:46,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:46,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543179309] [2021-12-06 17:18:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:46,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 881 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2021-12-06 17:18:47,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543179309] [2021-12-06 17:18:47,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543179309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:47,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:47,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:18:47,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378233381] [2021-12-06 17:18:47,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:47,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:18:47,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:18:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:18:47,131 INFO L87 Difference]: Start difference. First operand 390031 states and 399712 transitions. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2021-12-06 17:18:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:18:51,594 INFO L93 Difference]: Finished difference Result 806847 states and 827044 transitions. [2021-12-06 17:18:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:18:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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 951 [2021-12-06 17:18:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:18:52,105 INFO L225 Difference]: With dead ends: 806847 [2021-12-06 17:18:52,105 INFO L226 Difference]: Without dead ends: 425481 [2021-12-06 17:18:52,240 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 [2021-12-06 17:18:52,241 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 470 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:18:52,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1790 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:18:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425481 states. [2021-12-06 17:18:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425481 to 384527. [2021-12-06 17:18:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384527 states, 384526 states have (on average 1.0245419035383823) internal successors, (393963), 384526 states have internal predecessors, (393963), 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) [2021-12-06 17:18:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384527 states to 384527 states and 393963 transitions. [2021-12-06 17:18:56,783 INFO L78 Accepts]: Start accepts. Automaton has 384527 states and 393963 transitions. Word has length 951 [2021-12-06 17:18:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:18:56,783 INFO L470 AbstractCegarLoop]: Abstraction has 384527 states and 393963 transitions. [2021-12-06 17:18:56,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2021-12-06 17:18:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 384527 states and 393963 transitions. [2021-12-06 17:18:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2021-12-06 17:18:56,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:18:56,825 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:18:56,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 17:18:56,826 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:18:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:18:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1619534691, now seen corresponding path program 1 times [2021-12-06 17:18:56,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:18:56,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508689689] [2021-12-06 17:18:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:18:56,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:18:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:18:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 1190 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-06 17:18:57,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:57,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508689689] [2021-12-06 17:18:57,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508689689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:18:57,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:18:57,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:18:57,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469481895] [2021-12-06 17:18:57,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:18:57,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:18:57,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:18:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:18:57,032 INFO L87 Difference]: Start difference. First operand 384527 states and 393963 transitions. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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) [2021-12-06 17:19:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:02,873 INFO L93 Difference]: Finished difference Result 754107 states and 772807 transitions. [2021-12-06 17:19:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:19:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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 957 [2021-12-06 17:19:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:03,279 INFO L225 Difference]: With dead ends: 754107 [2021-12-06 17:19:03,279 INFO L226 Difference]: Without dead ends: 371153 [2021-12-06 17:19:03,415 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 [2021-12-06 17:19:03,416 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1614 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 6184 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 6673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 6184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:03,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 952 Invalid, 6673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 6184 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 17:19:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371153 states. [2021-12-06 17:19:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371153 to 323877. [2021-12-06 17:19:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323877 states, 323876 states have (on average 1.024206795193222) internal successors, (331716), 323876 states have internal predecessors, (331716), 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) [2021-12-06 17:19:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323877 states to 323877 states and 331716 transitions. [2021-12-06 17:19:07,240 INFO L78 Accepts]: Start accepts. Automaton has 323877 states and 331716 transitions. Word has length 957 [2021-12-06 17:19:07,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:07,241 INFO L470 AbstractCegarLoop]: Abstraction has 323877 states and 331716 transitions. [2021-12-06 17:19:07,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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) [2021-12-06 17:19:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 323877 states and 331716 transitions. [2021-12-06 17:19:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2021-12-06 17:19:07,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:07,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:07,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 17:19:07,287 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:07,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1708236710, now seen corresponding path program 1 times [2021-12-06 17:19:07,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993112804] [2021-12-06 17:19:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:07,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 677 proven. 25 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 17:19:07,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:07,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993112804] [2021-12-06 17:19:07,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993112804] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:19:07,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89833219] [2021-12-06 17:19:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:07,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:19:07,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:19:07,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:19:07,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:19:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:08,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:19:08,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:19:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-06 17:19:12,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:19:12,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89833219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:19:12,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:19:12,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-12-06 17:19:12,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811169557] [2021-12-06 17:19:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:19:12,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:19:12,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:19:12,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:19:12,821 INFO L87 Difference]: Start difference. First operand 323877 states and 331716 transitions. Second operand has 5 states, 5 states have (on average 185.2) internal successors, (926), 4 states have internal predecessors, (926), 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) [2021-12-06 17:19:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:19,768 INFO L93 Difference]: Finished difference Result 738397 states and 756158 transitions. [2021-12-06 17:19:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:19:19,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 4 states have internal predecessors, (926), 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 990 [2021-12-06 17:19:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:20,241 INFO L225 Difference]: With dead ends: 738397 [2021-12-06 17:19:20,241 INFO L226 Difference]: Without dead ends: 425544 [2021-12-06 17:19:20,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 988 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:19:20,368 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 2436 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 7090 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 7471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 7090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:20,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 1497 Invalid, 7471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 7090 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-06 17:19:20,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425544 states. [2021-12-06 17:19:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425544 to 326240. [2021-12-06 17:19:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326240 states, 326239 states have (on average 1.0242307020313328) internal successors, (334144), 326239 states have internal predecessors, (334144), 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) [2021-12-06 17:19:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326240 states to 326240 states and 334144 transitions. [2021-12-06 17:19:24,486 INFO L78 Accepts]: Start accepts. Automaton has 326240 states and 334144 transitions. Word has length 990 [2021-12-06 17:19:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:24,486 INFO L470 AbstractCegarLoop]: Abstraction has 326240 states and 334144 transitions. [2021-12-06 17:19:24,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 4 states have internal predecessors, (926), 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) [2021-12-06 17:19:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 326240 states and 334144 transitions. [2021-12-06 17:19:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2021-12-06 17:19:24,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:24,519 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:24,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:19:24,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 17:19:24,720 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2031962328, now seen corresponding path program 1 times [2021-12-06 17:19:24,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:24,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486039425] [2021-12-06 17:19:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:24,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 1257 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-06 17:19:25,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:25,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486039425] [2021-12-06 17:19:25,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486039425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:19:25,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:19:25,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:19:25,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552943382] [2021-12-06 17:19:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:19:25,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:19:25,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:19:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:19:25,268 INFO L87 Difference]: Start difference. First operand 326240 states and 334144 transitions. Second operand has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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) [2021-12-06 17:19:30,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:30,019 INFO L93 Difference]: Finished difference Result 639100 states and 654767 transitions. [2021-12-06 17:19:30,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:19:30,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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 1110 [2021-12-06 17:19:30,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:30,362 INFO L225 Difference]: With dead ends: 639100 [2021-12-06 17:19:30,362 INFO L226 Difference]: Without dead ends: 327821 [2021-12-06 17:19:30,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:19:30,626 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 1160 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 5466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:30,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 1600 Invalid, 5466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 5238 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 17:19:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327821 states. [2021-12-06 17:19:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327821 to 321518. [2021-12-06 17:19:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321518 states, 321517 states have (on average 1.0240858181682462) internal successors, (329261), 321517 states have internal predecessors, (329261), 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) [2021-12-06 17:19:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321518 states to 321518 states and 329261 transitions. [2021-12-06 17:19:33,949 INFO L78 Accepts]: Start accepts. Automaton has 321518 states and 329261 transitions. Word has length 1110 [2021-12-06 17:19:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:33,950 INFO L470 AbstractCegarLoop]: Abstraction has 321518 states and 329261 transitions. [2021-12-06 17:19:33,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 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) [2021-12-06 17:19:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 321518 states and 329261 transitions. [2021-12-06 17:19:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2021-12-06 17:19:33,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:33,999 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:33,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 17:19:33,999 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:34,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1172356637, now seen corresponding path program 1 times [2021-12-06 17:19:34,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:34,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779861237] [2021-12-06 17:19:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:34,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 794 proven. 223 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-06 17:19:34,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:34,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779861237] [2021-12-06 17:19:34,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779861237] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:19:34,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732970264] [2021-12-06 17:19:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:34,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:19:34,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:19:34,337 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:19:34,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:19:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:34,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:19:34,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:19:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 794 proven. 223 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-06 17:19:36,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:19:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 794 proven. 223 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-06 17:19:38,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732970264] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:19:38,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:19:38,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-12-06 17:19:38,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208319983] [2021-12-06 17:19:38,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:19:38,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:19:38,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:38,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:19:38,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:19:38,164 INFO L87 Difference]: Start difference. First operand 321518 states and 329261 transitions. Second operand has 7 states, 7 states have (on average 237.42857142857142) internal successors, (1662), 6 states have internal predecessors, (1662), 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) [2021-12-06 17:19:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:52,581 INFO L93 Difference]: Finished difference Result 698134 states and 714753 transitions. [2021-12-06 17:19:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:19:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 237.42857142857142) internal successors, (1662), 6 states have internal predecessors, (1662), 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 1194 [2021-12-06 17:19:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:52,998 INFO L225 Difference]: With dead ends: 698134 [2021-12-06 17:19:52,999 INFO L226 Difference]: Without dead ends: 374245 [2021-12-06 17:19:53,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2396 GetRequests, 2383 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:19:53,115 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 6835 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 20183 mSolverCounterSat, 1474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6835 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 21657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 20183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:53,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6835 Valid, 1137 Invalid, 21657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 20183 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-12-06 17:19:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374245 states. [2021-12-06 17:19:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374245 to 308880. [2021-12-06 17:19:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308880 states, 308879 states have (on average 1.0206035373074893) internal successors, (315243), 308879 states have internal predecessors, (315243), 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) [2021-12-06 17:19:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308880 states to 308880 states and 315243 transitions. [2021-12-06 17:19:56,988 INFO L78 Accepts]: Start accepts. Automaton has 308880 states and 315243 transitions. Word has length 1194 [2021-12-06 17:19:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:56,989 INFO L470 AbstractCegarLoop]: Abstraction has 308880 states and 315243 transitions. [2021-12-06 17:19:56,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.42857142857142) internal successors, (1662), 6 states have internal predecessors, (1662), 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) [2021-12-06 17:19:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 308880 states and 315243 transitions. [2021-12-06 17:19:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2021-12-06 17:19:57,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:57,041 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:19:57,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 17:19:57,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1ab3ec0-07e7-4060-8228-548fb45cd8af/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 17:19:57,243 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:19:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 802144930, now seen corresponding path program 1 times [2021-12-06 17:19:57,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:57,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142084521] [2021-12-06 17:19:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:57,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 957 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2021-12-06 17:19:57,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:57,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142084521] [2021-12-06 17:19:57,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142084521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:19:57,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:19:57,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:19:57,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839670563] [2021-12-06 17:19:57,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:19:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:19:57,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:19:57,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:19:57,673 INFO L87 Difference]: Start difference. First operand 308880 states and 315243 transitions. Second operand has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 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) [2021-12-06 17:20:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:01,502 INFO L93 Difference]: Finished difference Result 610687 states and 623443 transitions. [2021-12-06 17:20:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 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 1274 [2021-12-06 17:20:01,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:01,840 INFO L225 Difference]: With dead ends: 610687 [2021-12-06 17:20:01,840 INFO L226 Difference]: Without dead ends: 319127 [2021-12-06 17:20:01,949 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 [2021-12-06 17:20:01,949 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 421 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:01,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 1606 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 17:20:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319127 states. [2021-12-06 17:20:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319127 to 304153. [2021-12-06 17:20:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304153 states, 304152 states have (on average 1.0201806991241222) internal successors, (310290), 304152 states have internal predecessors, (310290), 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) [2021-12-06 17:20:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304153 states to 304153 states and 310290 transitions. [2021-12-06 17:20:05,251 INFO L78 Accepts]: Start accepts. Automaton has 304153 states and 310290 transitions. Word has length 1274 [2021-12-06 17:20:05,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:05,252 INFO L470 AbstractCegarLoop]: Abstraction has 304153 states and 310290 transitions. [2021-12-06 17:20:05,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.0) internal successors, (897), 3 states have internal predecessors, (897), 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) [2021-12-06 17:20:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 304153 states and 310290 transitions. [2021-12-06 17:20:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1282 [2021-12-06 17:20:05,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:05,305 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:05,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 17:20:05,305 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash -565342188, now seen corresponding path program 1 times [2021-12-06 17:20:05,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:05,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610884846] [2021-12-06 17:20:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:05,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2097 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 1713 trivial. 0 not checked. [2021-12-06 17:20:05,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:05,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610884846] [2021-12-06 17:20:05,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610884846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:05,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:05,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:20:05,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907665101] [2021-12-06 17:20:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:05,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:05,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:05,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:05,880 INFO L87 Difference]: Start difference. First operand 304153 states and 310290 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2021-12-06 17:20:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:10,008 INFO L93 Difference]: Finished difference Result 607524 states and 620004 transitions. [2021-12-06 17:20:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:10,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 1281 [2021-12-06 17:20:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:10,480 INFO L225 Difference]: With dead ends: 607524 [2021-12-06 17:20:10,480 INFO L226 Difference]: Without dead ends: 320695 [2021-12-06 17:20:10,580 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 [2021-12-06 17:20:10,581 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 775 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:10,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1553 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 17:20:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320695 states. [2021-12-06 17:20:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320695 to 315177. [2021-12-06 17:20:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315177 states, 315176 states have (on average 1.0191194761022413) internal successors, (321202), 315176 states have internal predecessors, (321202), 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) [2021-12-06 17:20:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315177 states to 315177 states and 321202 transitions. [2021-12-06 17:20:14,061 INFO L78 Accepts]: Start accepts. Automaton has 315177 states and 321202 transitions. Word has length 1281 [2021-12-06 17:20:14,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:14,062 INFO L470 AbstractCegarLoop]: Abstraction has 315177 states and 321202 transitions. [2021-12-06 17:20:14,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2021-12-06 17:20:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 315177 states and 321202 transitions. [2021-12-06 17:20:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1436 [2021-12-06 17:20:14,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:14,135 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:14,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 17:20:14,135 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:20:14,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2040999177, now seen corresponding path program 1 times [2021-12-06 17:20:14,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:14,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551169955] [2021-12-06 17:20:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:14,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:20:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 1307 proven. 0 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2021-12-06 17:20:14,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:14,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551169955] [2021-12-06 17:20:14,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551169955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:20:14,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:20:14,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:20:14,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142409074] [2021-12-06 17:20:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:20:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:20:14,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:20:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:20:14,710 INFO L87 Difference]: Start difference. First operand 315177 states and 321202 transitions. Second operand has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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) [2021-12-06 17:20:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:18,485 INFO L93 Difference]: Finished difference Result 622478 states and 634526 transitions. [2021-12-06 17:20:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:20:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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 1435 [2021-12-06 17:20:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:18,834 INFO L225 Difference]: With dead ends: 622478 [2021-12-06 17:20:18,834 INFO L226 Difference]: Without dead ends: 324625 [2021-12-06 17:20:19,082 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 [2021-12-06 17:20:19,082 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 728 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:19,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1638 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 17:20:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324625 states.