./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0 --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 be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:42:31,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:42:31,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:42:31,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:42:31,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:42:31,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:42:31,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:42:31,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:42:31,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:42:31,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:42:31,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:42:31,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:42:31,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:42:31,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:42:31,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:42:31,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:42:31,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:42:31,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:42:31,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:42:31,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:42:31,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:42:31,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:42:31,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:42:31,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:42:31,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:42:31,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:42:31,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:42:31,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:42:31,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:42:31,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:42:31,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:42:31,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:42:31,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:42:31,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:42:31,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:42:31,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:42:31,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:42:31,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:42:31,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:42:31,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:42:31,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:42:31,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:42:31,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:42:31,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:42:31,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:42:31,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:42:31,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:42:31,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:42:31,311 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:42:31,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:42:31,312 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:42:31,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:42:31,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:42:31,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:42:31,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:42:31,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:42:31,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:42:31,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:42:31,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:42:31,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:42:31,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:42:31,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:42:31,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:42:31,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:42:31,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:42:31,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:42:31,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:42:31,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:42:31,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:42:31,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:42:31,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:42:31,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:42:31,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:42:31,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:42:31,322 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_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be72096c105f582e8528565b95ebbdcff5f4be75e7838295d3ddf5b4552aba69 [2021-11-22 15:42:31,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:42:31,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:42:31,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:42:31,766 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:42:31,767 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:42:31,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2021-11-22 15:42:31,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/data/18a68ae89/cedbf9d38c194e7098c6d6f45b7838d6/FLAG83ec44a1d [2021-11-22 15:42:32,627 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:42:32,627 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c [2021-11-22 15:42:32,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/data/18a68ae89/cedbf9d38c194e7098c6d6f45b7838d6/FLAG83ec44a1d [2021-11-22 15:42:32,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/data/18a68ae89/cedbf9d38c194e7098c6d6f45b7838d6 [2021-11-22 15:42:32,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:42:32,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:42:32,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:42:32,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:42:32,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:42:32,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:32" (1/1) ... [2021-11-22 15:42:32,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52edfaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:32, skipping insertion in model container [2021-11-22 15:42:32,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:32" (1/1) ... [2021-11-22 15:42:32,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:42:32,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:42:33,596 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_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2021-11-22 15:42:33,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:42:33,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:42:33,902 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_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/sv-benchmarks/c/product-lines/email_spec0_product25.cil.c[43418,43431] [2021-11-22 15:42:33,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:42:34,009 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:42:34,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34 WrapperNode [2021-11-22 15:42:34,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:42:34,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:42:34,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:42:34,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:42:34,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,290 INFO L137 Inliner]: procedures = 130, calls = 217, calls flagged for inlining = 126, calls inlined = 304, statements flattened = 4619 [2021-11-22 15:42:34,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:42:34,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:42:34,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:42:34,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:42:34,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:42:34,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:42:34,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:42:34,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:42:34,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (1/1) ... [2021-11-22 15:42:34,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:42:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:34,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:42:34,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:42:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 15:42:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:42:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:42:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:42:34,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:42:34,828 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:42:34,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:42:37,338 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:42:37,368 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:42:37,369 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:42:37,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:37 BoogieIcfgContainer [2021-11-22 15:42:37,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:42:37,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:42:37,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:42:37,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:42:37,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:42:32" (1/3) ... [2021-11-22 15:42:37,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9d4436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:37, skipping insertion in model container [2021-11-22 15:42:37,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:34" (2/3) ... [2021-11-22 15:42:37,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9d4436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:37, skipping insertion in model container [2021-11-22 15:42:37,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:37" (3/3) ... [2021-11-22 15:42:37,386 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product25.cil.c [2021-11-22 15:42:37,393 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:42:37,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 15:42:37,464 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:42:37,472 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:42:37,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 15:42:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 948 states, 941 states have (on average 1.6663124335812964) internal successors, (1568), 947 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:42:37,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:37,559 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] [2021-11-22 15:42:37,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1698520501, now seen corresponding path program 1 times [2021-11-22 15:42:37,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:37,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127594451] [2021-11-22 15:42:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:37,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:37,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:37,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127594451] [2021-11-22 15:42:37,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127594451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:37,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:37,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:37,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329151260] [2021-11-22 15:42:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:37,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:37,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:37,971 INFO L87 Difference]: Start difference. First operand has 948 states, 941 states have (on average 1.6663124335812964) internal successors, (1568), 947 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:38,289 INFO L93 Difference]: Finished difference Result 2791 states and 4628 transitions. [2021-11-22 15:42:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:38,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-22 15:42:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:38,331 INFO L225 Difference]: With dead ends: 2791 [2021-11-22 15:42:38,331 INFO L226 Difference]: Without dead ends: 1729 [2021-11-22 15:42:38,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:38,347 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 1529 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 4591 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:38,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 4591 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-11-22 15:42:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 875. [2021-11-22 15:42:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6743383199079402) internal successors, (1455), 874 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:38,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1455 transitions. [2021-11-22 15:42:38,507 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1455 transitions. Word has length 58 [2021-11-22 15:42:38,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:38,508 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1455 transitions. [2021-11-22 15:42:38,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1455 transitions. [2021-11-22 15:42:38,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:42:38,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:38,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:38,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:42:38,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash -501361440, now seen corresponding path program 1 times [2021-11-22 15:42:38,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:38,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918761127] [2021-11-22 15:42:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:38,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:38,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:38,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918761127] [2021-11-22 15:42:38,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918761127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:38,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:38,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:42:38,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574549760] [2021-11-22 15:42:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:38,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:42:38,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:42:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:42:38,744 INFO L87 Difference]: Start difference. First operand 875 states and 1455 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:39,066 INFO L93 Difference]: Finished difference Result 2566 states and 4273 transitions. [2021-11-22 15:42:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:42:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-22 15:42:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:39,083 INFO L225 Difference]: With dead ends: 2566 [2021-11-22 15:42:39,084 INFO L226 Difference]: Without dead ends: 1714 [2021-11-22 15:42:39,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:42:39,094 INFO L933 BasicCegarLoop]: 2818 mSDtfsCounter, 2864 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 7037 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:39,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2864 Valid, 7037 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:39,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-11-22 15:42:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 875. [2021-11-22 15:42:39,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.673187571921749) internal successors, (1454), 874 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1454 transitions. [2021-11-22 15:42:39,174 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1454 transitions. Word has length 60 [2021-11-22 15:42:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:39,176 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1454 transitions. [2021-11-22 15:42:39,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1454 transitions. [2021-11-22 15:42:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:42:39,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:39,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:39,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:42:39,185 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1519915429, now seen corresponding path program 1 times [2021-11-22 15:42:39,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:39,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039430923] [2021-11-22 15:42:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:39,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:39,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:39,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039430923] [2021-11-22 15:42:39,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039430923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:39,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:39,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:39,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856028293] [2021-11-22 15:42:39,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:39,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:39,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:39,360 INFO L87 Difference]: Start difference. First operand 875 states and 1454 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:39,480 INFO L93 Difference]: Finished difference Result 1729 states and 2879 transitions. [2021-11-22 15:42:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:39,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 15:42:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:39,489 INFO L225 Difference]: With dead ends: 1729 [2021-11-22 15:42:39,489 INFO L226 Difference]: Without dead ends: 882 [2021-11-22 15:42:39,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:39,500 INFO L933 BasicCegarLoop]: 1458 mSDtfsCounter, 1427 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:39,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 1480 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-11-22 15:42:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 875. [2021-11-22 15:42:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.6697353279631761) internal successors, (1451), 874 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1451 transitions. [2021-11-22 15:42:39,557 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1451 transitions. Word has length 61 [2021-11-22 15:42:39,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:39,558 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1451 transitions. [2021-11-22 15:42:39,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1451 transitions. [2021-11-22 15:42:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 15:42:39,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:39,561 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] [2021-11-22 15:42:39,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:42:39,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash -965787958, now seen corresponding path program 1 times [2021-11-22 15:42:39,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077907138] [2021-11-22 15:42:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:39,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:39,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:39,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077907138] [2021-11-22 15:42:39,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077907138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:39,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:39,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:42:39,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785823225] [2021-11-22 15:42:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:39,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:42:39,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:42:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:42:39,665 INFO L87 Difference]: Start difference. First operand 875 states and 1451 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:39,946 INFO L93 Difference]: Finished difference Result 2553 states and 4250 transitions. [2021-11-22 15:42:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:39,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-22 15:42:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:39,961 INFO L225 Difference]: With dead ends: 2553 [2021-11-22 15:42:39,962 INFO L226 Difference]: Without dead ends: 1711 [2021-11-22 15:42:39,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:39,974 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 7006 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7006 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:39,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7006 Valid, 2883 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2021-11-22 15:42:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 875. [2021-11-22 15:42:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.668584579976985) internal successors, (1450), 874 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1450 transitions. [2021-11-22 15:42:40,043 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1450 transitions. Word has length 63 [2021-11-22 15:42:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:40,043 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1450 transitions. [2021-11-22 15:42:40,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1450 transitions. [2021-11-22 15:42:40,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 15:42:40,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:40,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:40,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:42:40,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 140592315, now seen corresponding path program 1 times [2021-11-22 15:42:40,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:40,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358323322] [2021-11-22 15:42:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:40,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:40,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:40,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358323322] [2021-11-22 15:42:40,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358323322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:40,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:42:40,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601758980] [2021-11-22 15:42:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:40,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:42:40,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:42:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:42:40,201 INFO L87 Difference]: Start difference. First operand 875 states and 1450 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:40,504 INFO L93 Difference]: Finished difference Result 2560 states and 4256 transitions. [2021-11-22 15:42:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:42:40,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 15:42:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:40,518 INFO L225 Difference]: With dead ends: 2560 [2021-11-22 15:42:40,518 INFO L226 Difference]: Without dead ends: 1718 [2021-11-22 15:42:40,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:40,521 INFO L933 BasicCegarLoop]: 1434 mSDtfsCounter, 7010 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7010 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:40,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7010 Valid, 2886 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:42:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2021-11-22 15:42:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 875. [2021-11-22 15:42:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 869 states have (on average 1.667433831990794) internal successors, (1449), 874 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1449 transitions. [2021-11-22 15:42:40,608 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1449 transitions. Word has length 64 [2021-11-22 15:42:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:40,608 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1449 transitions. [2021-11-22 15:42:40,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1449 transitions. [2021-11-22 15:42:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 15:42:40,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:40,617 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] [2021-11-22 15:42:40,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:42:40,618 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash -347272187, now seen corresponding path program 1 times [2021-11-22 15:42:40,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:40,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255528029] [2021-11-22 15:42:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:40,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:40,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:40,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255528029] [2021-11-22 15:42:40,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255528029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:40,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:40,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:40,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98817934] [2021-11-22 15:42:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:40,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:40,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:40,699 INFO L87 Difference]: Start difference. First operand 875 states and 1449 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:40,788 INFO L93 Difference]: Finished difference Result 1451 states and 2374 transitions. [2021-11-22 15:42:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:40,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-22 15:42:40,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:40,795 INFO L225 Difference]: With dead ends: 1451 [2021-11-22 15:42:40,796 INFO L226 Difference]: Without dead ends: 878 [2021-11-22 15:42:40,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:40,799 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 1 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:40,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2892 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-11-22 15:42:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 877. [2021-11-22 15:42:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 871 states have (on average 1.6659012629161882) internal successors, (1451), 876 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1451 transitions. [2021-11-22 15:42:40,907 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1451 transitions. Word has length 65 [2021-11-22 15:42:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:40,909 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1451 transitions. [2021-11-22 15:42:40,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1451 transitions. [2021-11-22 15:42:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-22 15:42:40,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:40,912 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:40,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:42:40,912 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:40,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:40,913 INFO L85 PathProgramCache]: Analyzing trace with hash 47561383, now seen corresponding path program 1 times [2021-11-22 15:42:40,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:40,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538448357] [2021-11-22 15:42:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:40,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:40,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:40,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538448357] [2021-11-22 15:42:40,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538448357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:40,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:40,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:40,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859058444] [2021-11-22 15:42:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:40,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:40,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:40,995 INFO L87 Difference]: Start difference. First operand 877 states and 1451 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:41,156 INFO L93 Difference]: Finished difference Result 2503 states and 4163 transitions. [2021-11-22 15:42:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:41,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-22 15:42:41,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:41,170 INFO L225 Difference]: With dead ends: 2503 [2021-11-22 15:42:41,171 INFO L226 Difference]: Without dead ends: 1664 [2021-11-22 15:42:41,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:41,175 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1399 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:41,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 2798 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-22 15:42:41,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1091. [2021-11-22 15:42:41,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1085 states have (on average 1.6930875576036866) internal successors, (1837), 1090 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1837 transitions. [2021-11-22 15:42:41,272 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1837 transitions. Word has length 71 [2021-11-22 15:42:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:41,273 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1837 transitions. [2021-11-22 15:42:41,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1837 transitions. [2021-11-22 15:42:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 15:42:41,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:41,278 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:41,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:42:41,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:41,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash -263562087, now seen corresponding path program 1 times [2021-11-22 15:42:41,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:41,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377221448] [2021-11-22 15:42:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:41,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:41,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377221448] [2021-11-22 15:42:41,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377221448] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:42:41,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118977382] [2021-11-22 15:42:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:41,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:41,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:42:41,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:42:41,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:42:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:41,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:42:41,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:42:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:41,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:42:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:41,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118977382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:42:41,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:42:41,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:42:41,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339249792] [2021-11-22 15:42:41,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:42:41,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:42:41,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:42:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:41,994 INFO L87 Difference]: Start difference. First operand 1091 states and 1837 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:42,401 INFO L93 Difference]: Finished difference Result 4611 states and 7744 transitions. [2021-11-22 15:42:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:42:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 15:42:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:42,430 INFO L225 Difference]: With dead ends: 4611 [2021-11-22 15:42:42,431 INFO L226 Difference]: Without dead ends: 4038 [2021-11-22 15:42:42,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:42:42,435 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 6992 mSDsluCounter, 7092 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6992 SdHoareTripleChecker+Valid, 8539 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:42,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6992 Valid, 8539 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-11-22 15:42:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 2319. [2021-11-22 15:42:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2313 states have (on average 1.7527021184608733) internal successors, (4054), 2318 states have internal predecessors, (4054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 4054 transitions. [2021-11-22 15:42:42,656 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 4054 transitions. Word has length 72 [2021-11-22 15:42:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:42,657 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 4054 transitions. [2021-11-22 15:42:42,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 4054 transitions. [2021-11-22 15:42:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:42:42,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:42,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:42,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:42:42,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ef9ce44-605e-4ac0-805f-ebd5407fccdd/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:42:42,890 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 279050604, now seen corresponding path program 1 times [2021-11-22 15:42:42,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438191200] [2021-11-22 15:42:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:42,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:42,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:42,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438191200] [2021-11-22 15:42:42,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438191200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:42,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:42,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:42,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838166369] [2021-11-22 15:42:42,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:42,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:42,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:42,960 INFO L87 Difference]: Start difference. First operand 2319 states and 4054 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:43,215 INFO L93 Difference]: Finished difference Result 6336 states and 11082 transitions. [2021-11-22 15:42:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:43,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-22 15:42:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:43,250 INFO L225 Difference]: With dead ends: 6336 [2021-11-22 15:42:43,250 INFO L226 Difference]: Without dead ends: 4117 [2021-11-22 15:42:43,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:43,258 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 1397 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:43,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 2893 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2021-11-22 15:42:43,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3544. [2021-11-22 15:42:43,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3538 states have (on average 1.7687959299039004) internal successors, (6258), 3543 states have internal predecessors, (6258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 6258 transitions. [2021-11-22 15:42:43,570 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 6258 transitions. Word has length 78 [2021-11-22 15:42:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:43,571 INFO L470 AbstractCegarLoop]: Abstraction has 3544 states and 6258 transitions. [2021-11-22 15:42:43,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 6258 transitions. [2021-11-22 15:42:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 15:42:43,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:43,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:43,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:42:43,579 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1402790100, now seen corresponding path program 1 times [2021-11-22 15:42:43,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620953637] [2021-11-22 15:42:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:43,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:43,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:43,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620953637] [2021-11-22 15:42:43,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620953637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:43,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:43,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:43,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897652224] [2021-11-22 15:42:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:43,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:43,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:43,642 INFO L87 Difference]: Start difference. First operand 3544 states and 6258 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:44,049 INFO L93 Difference]: Finished difference Result 9400 states and 16608 transitions. [2021-11-22 15:42:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-22 15:42:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:44,107 INFO L225 Difference]: With dead ends: 9400 [2021-11-22 15:42:44,107 INFO L226 Difference]: Without dead ends: 6046 [2021-11-22 15:42:44,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:44,114 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1395 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:44,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1395 Valid, 2884 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2021-11-22 15:42:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 5473. [2021-11-22 15:42:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5473 states, 5467 states have (on average 1.7797695262483995) internal successors, (9730), 5472 states have internal predecessors, (9730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 9730 transitions. [2021-11-22 15:42:44,550 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 9730 transitions. Word has length 79 [2021-11-22 15:42:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:44,551 INFO L470 AbstractCegarLoop]: Abstraction has 5473 states and 9730 transitions. [2021-11-22 15:42:44,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 9730 transitions. [2021-11-22 15:42:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 15:42:44,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:44,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:44,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:42:44,571 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:44,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1085676106, now seen corresponding path program 1 times [2021-11-22 15:42:44,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:44,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207467748] [2021-11-22 15:42:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:44,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:44,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:44,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207467748] [2021-11-22 15:42:44,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207467748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:44,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:44,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:44,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672420525] [2021-11-22 15:42:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:44,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:44,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:44,644 INFO L87 Difference]: Start difference. First operand 5473 states and 9730 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:45,103 INFO L93 Difference]: Finished difference Result 13733 states and 24401 transitions. [2021-11-22 15:42:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:45,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-22 15:42:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:45,133 INFO L225 Difference]: With dead ends: 13733 [2021-11-22 15:42:45,134 INFO L226 Difference]: Without dead ends: 8807 [2021-11-22 15:42:45,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:45,146 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1393 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:45,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 2836 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:45,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8807 states. [2021-11-22 15:42:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8807 to 8234. [2021-11-22 15:42:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8234 states, 8228 states have (on average 1.7841516771998056) internal successors, (14680), 8233 states have internal predecessors, (14680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8234 states to 8234 states and 14680 transitions. [2021-11-22 15:42:45,745 INFO L78 Accepts]: Start accepts. Automaton has 8234 states and 14680 transitions. Word has length 80 [2021-11-22 15:42:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:45,746 INFO L470 AbstractCegarLoop]: Abstraction has 8234 states and 14680 transitions. [2021-11-22 15:42:45,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 8234 states and 14680 transitions. [2021-11-22 15:42:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 15:42:45,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:45,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:45,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:42:45,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:45,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:45,763 INFO L85 PathProgramCache]: Analyzing trace with hash -656692038, now seen corresponding path program 1 times [2021-11-22 15:42:45,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:45,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392003233] [2021-11-22 15:42:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:45,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:45,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:45,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392003233] [2021-11-22 15:42:45,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392003233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:45,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:45,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:45,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110706924] [2021-11-22 15:42:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:45,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:45,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:45,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:45,826 INFO L87 Difference]: Start difference. First operand 8234 states and 14680 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:46,382 INFO L93 Difference]: Finished difference Result 20271 states and 36133 transitions. [2021-11-22 15:42:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:46,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-22 15:42:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:46,425 INFO L225 Difference]: With dead ends: 20271 [2021-11-22 15:42:46,425 INFO L226 Difference]: Without dead ends: 13158 [2021-11-22 15:42:46,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:46,442 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1391 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:46,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 2836 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13158 states. [2021-11-22 15:42:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13158 to 12585. [2021-11-22 15:42:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12585 states, 12579 states have (on average 1.7860720248032436) internal successors, (22467), 12584 states have internal predecessors, (22467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12585 states to 12585 states and 22467 transitions. [2021-11-22 15:42:47,259 INFO L78 Accepts]: Start accepts. Automaton has 12585 states and 22467 transitions. Word has length 81 [2021-11-22 15:42:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:47,260 INFO L470 AbstractCegarLoop]: Abstraction has 12585 states and 22467 transitions. [2021-11-22 15:42:47,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 12585 states and 22467 transitions. [2021-11-22 15:42:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 15:42:47,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:47,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:47,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:42:47,282 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash -460261574, now seen corresponding path program 1 times [2021-11-22 15:42:47,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:47,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337646257] [2021-11-22 15:42:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:47,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:47,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:47,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337646257] [2021-11-22 15:42:47,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337646257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:47,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:47,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:47,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927071743] [2021-11-22 15:42:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:47,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:47,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:47,340 INFO L87 Difference]: Start difference. First operand 12585 states and 22467 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:48,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:48,281 INFO L93 Difference]: Finished difference Result 32175 states and 57535 transitions. [2021-11-22 15:42:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:48,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 15:42:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:48,338 INFO L225 Difference]: With dead ends: 32175 [2021-11-22 15:42:48,338 INFO L226 Difference]: Without dead ends: 21239 [2021-11-22 15:42:48,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:48,357 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1389 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:48,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 2884 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21239 states. [2021-11-22 15:42:49,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21239 to 20666. [2021-11-22 15:42:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20666 states, 20660 states have (on average 1.7892545982575023) internal successors, (36966), 20665 states have internal predecessors, (36966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20666 states to 20666 states and 36966 transitions. [2021-11-22 15:42:49,478 INFO L78 Accepts]: Start accepts. Automaton has 20666 states and 36966 transitions. Word has length 82 [2021-11-22 15:42:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:49,478 INFO L470 AbstractCegarLoop]: Abstraction has 20666 states and 36966 transitions. [2021-11-22 15:42:49,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20666 states and 36966 transitions. [2021-11-22 15:42:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 15:42:49,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:49,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:49,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:42:49,499 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 311873482, now seen corresponding path program 1 times [2021-11-22 15:42:49,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:49,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399195169] [2021-11-22 15:42:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:49,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:49,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:49,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399195169] [2021-11-22 15:42:49,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399195169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:49,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:49,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:49,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603205513] [2021-11-22 15:42:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:49,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:49,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:49,563 INFO L87 Difference]: Start difference. First operand 20666 states and 36966 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:51,197 INFO L93 Difference]: Finished difference Result 53826 states and 96568 transitions. [2021-11-22 15:42:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-22 15:42:51,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:51,311 INFO L225 Difference]: With dead ends: 53826 [2021-11-22 15:42:51,311 INFO L226 Difference]: Without dead ends: 35674 [2021-11-22 15:42:51,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:51,341 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1387 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:51,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 2883 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35674 states. [2021-11-22 15:42:52,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35674 to 35101. [2021-11-22 15:42:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35101 states, 35095 states have (on average 1.7933038894429405) internal successors, (62936), 35100 states have internal predecessors, (62936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35101 states to 35101 states and 62936 transitions. [2021-11-22 15:42:52,882 INFO L78 Accepts]: Start accepts. Automaton has 35101 states and 62936 transitions. Word has length 83 [2021-11-22 15:42:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:52,883 INFO L470 AbstractCegarLoop]: Abstraction has 35101 states and 62936 transitions. [2021-11-22 15:42:52,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 35101 states and 62936 transitions. [2021-11-22 15:42:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 15:42:52,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:52,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:52,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:42:52,911 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 263316012, now seen corresponding path program 1 times [2021-11-22 15:42:52,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:52,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697668444] [2021-11-22 15:42:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:52,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:52,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:52,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697668444] [2021-11-22 15:42:52,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697668444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:52,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:52,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:52,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678295264] [2021-11-22 15:42:52,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:52,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:52,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:52,988 INFO L87 Difference]: Start difference. First operand 35101 states and 62936 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:54,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:42:54,738 INFO L93 Difference]: Finished difference Result 87548 states and 156572 transitions. [2021-11-22 15:42:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:42:54,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-22 15:42:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:42:54,908 INFO L225 Difference]: With dead ends: 87548 [2021-11-22 15:42:54,908 INFO L226 Difference]: Without dead ends: 57169 [2021-11-22 15:42:54,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:54,948 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1385 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:42:54,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 2809 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:42:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57169 states. [2021-11-22 15:42:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57169 to 56596. [2021-11-22 15:42:57,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56596 states, 56590 states have (on average 1.783283265594628) internal successors, (100916), 56595 states have internal predecessors, (100916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56596 states to 56596 states and 100916 transitions. [2021-11-22 15:42:57,221 INFO L78 Accepts]: Start accepts. Automaton has 56596 states and 100916 transitions. Word has length 84 [2021-11-22 15:42:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:42:57,221 INFO L470 AbstractCegarLoop]: Abstraction has 56596 states and 100916 transitions. [2021-11-22 15:42:57,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:42:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 56596 states and 100916 transitions. [2021-11-22 15:42:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 15:42:57,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:42:57,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:42:57,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:42:57,246 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:42:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:42:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1249941014, now seen corresponding path program 1 times [2021-11-22 15:42:57,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:42:57,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757907101] [2021-11-22 15:42:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:42:57,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:42:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:42:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:42:57,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:42:57,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757907101] [2021-11-22 15:42:57,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757907101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:42:57,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:42:57,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:42:57,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338507217] [2021-11-22 15:42:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:42:57,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:42:57,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:42:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:42:57,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:42:57,297 INFO L87 Difference]: Start difference. First operand 56596 states and 100916 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:00,275 INFO L93 Difference]: Finished difference Result 145709 states and 259783 transitions. [2021-11-22 15:43:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:43:00,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-22 15:43:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:00,526 INFO L225 Difference]: With dead ends: 145709 [2021-11-22 15:43:00,526 INFO L226 Difference]: Without dead ends: 96138 [2021-11-22 15:43:00,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:00,583 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1383 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 2836 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:00,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 2836 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:00,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96138 states. [2021-11-22 15:43:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96138 to 95565. [2021-11-22 15:43:04,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95565 states, 95559 states have (on average 1.77964398957712) internal successors, (170061), 95564 states have internal predecessors, (170061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95565 states to 95565 states and 170061 transitions. [2021-11-22 15:43:04,701 INFO L78 Accepts]: Start accepts. Automaton has 95565 states and 170061 transitions. Word has length 85 [2021-11-22 15:43:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:04,701 INFO L470 AbstractCegarLoop]: Abstraction has 95565 states and 170061 transitions. [2021-11-22 15:43:04,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 95565 states and 170061 transitions. [2021-11-22 15:43:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 15:43:04,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:04,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:04,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:43:04,725 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:43:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1126079836, now seen corresponding path program 1 times [2021-11-22 15:43:04,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:04,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563994521] [2021-11-22 15:43:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:04,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:04,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:04,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563994521] [2021-11-22 15:43:04,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563994521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:04,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:04,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:43:04,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440805090] [2021-11-22 15:43:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:04,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:43:04,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:43:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:04,772 INFO L87 Difference]: Start difference. First operand 95565 states and 170061 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:43:09,862 INFO L93 Difference]: Finished difference Result 263506 states and 470070 transitions. [2021-11-22 15:43:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:43:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 15:43:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:43:10,514 INFO L225 Difference]: With dead ends: 263506 [2021-11-22 15:43:10,522 INFO L226 Difference]: Without dead ends: 176946 [2021-11-22 15:43:10,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:10,623 INFO L933 BasicCegarLoop]: 1448 mSDtfsCounter, 1381 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:43:10,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 2883 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:43:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176946 states. [2021-11-22 15:43:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176946 to 176373. [2021-11-22 15:43:17,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176373 states, 176367 states have (on average 1.782187143853442) internal successors, (314319), 176372 states have internal predecessors, (314319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176373 states to 176373 states and 314319 transitions. [2021-11-22 15:43:18,421 INFO L78 Accepts]: Start accepts. Automaton has 176373 states and 314319 transitions. Word has length 86 [2021-11-22 15:43:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:43:18,421 INFO L470 AbstractCegarLoop]: Abstraction has 176373 states and 314319 transitions. [2021-11-22 15:43:18,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:43:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 176373 states and 314319 transitions. [2021-11-22 15:43:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 15:43:18,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:43:18,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:43:18,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:43:18,443 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:43:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:43:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1657797914, now seen corresponding path program 1 times [2021-11-22 15:43:18,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:43:18,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124879786] [2021-11-22 15:43:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:43:18,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:43:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:43:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:43:18,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:43:18,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124879786] [2021-11-22 15:43:18,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124879786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:43:18,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:43:18,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:43:18,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026464647] [2021-11-22 15:43:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:43:18,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:43:18,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:43:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:43:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:43:18,498 INFO L87 Difference]: Start difference. First operand 176373 states and 314319 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)