./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product15.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_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/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_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/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_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/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 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:38:53,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:38:53,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:38:53,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:38:53,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:38:53,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:38:53,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:38:53,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:38:53,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:38:53,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:38:53,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:38:53,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:38:53,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:38:53,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:38:53,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:38:53,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:38:53,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:38:53,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:38:53,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:38:53,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:38:53,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:38:53,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:38:53,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:38:53,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:38:53,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:38:53,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:38:53,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:38:53,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:38:53,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:38:53,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:38:53,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:38:53,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:38:53,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:38:53,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:38:53,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:38:53,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:38:53,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:38:53,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:38:53,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:38:53,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:38:53,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:38:53,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:38:53,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:38:53,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:38:53,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:38:53,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:38:53,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:38:53,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:38:53,764 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:38:53,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:38:53,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:38:53,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:38:53,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:38:53,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:38:53,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:38:53,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:38:53,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:38:53,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:38:53,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:38:53,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:38:53,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:38:53,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:38:53,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:38:53,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:38:53,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:38:53,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:38:53,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:38:53,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:38:53,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:38:53,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:38:53,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:38:53,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:38:53,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:38:53,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:38:53,770 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_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 [2021-11-22 14:38:54,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:38:54,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:38:54,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:38:54,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:38:54,138 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:38:54,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2021-11-22 14:38:54,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/data/ac470a372/5db1dd24b0dc455db015ae2b91d90f88/FLAG2de431139 [2021-11-22 14:38:54,972 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:38:54,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2021-11-22 14:38:55,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/data/ac470a372/5db1dd24b0dc455db015ae2b91d90f88/FLAG2de431139 [2021-11-22 14:38:55,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/data/ac470a372/5db1dd24b0dc455db015ae2b91d90f88 [2021-11-22 14:38:55,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:38:55,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:38:55,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:38:55,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:38:55,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:38:55,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:38:55" (1/1) ... [2021-11-22 14:38:55,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b715e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:55, skipping insertion in model container [2021-11-22 14:38:55,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:38:55" (1/1) ... [2021-11-22 14:38:55,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:38:55,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:38:55,775 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_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2021-11-22 14:38:56,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:38:56,047 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:38:56,126 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_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2021-11-22 14:38:56,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:38:56,261 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:38:56,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56 WrapperNode [2021-11-22 14:38:56,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:38:56,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:38:56,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:38:56,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:38:56,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,458 INFO L137 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 110, calls inlined = 127, statements flattened = 1933 [2021-11-22 14:38:56,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:38:56,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:38:56,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:38:56,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:38:56,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:38:56,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:38:56,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:38:56,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:38:56,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (1/1) ... [2021-11-22 14:38:56,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:38:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:38:56,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:38:56,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:38:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 14:38:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:38:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:38:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:38:56,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:38:56,951 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:38:56,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:38:58,639 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:38:58,668 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:38:58,668 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:38:58,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:38:58 BoogieIcfgContainer [2021-11-22 14:38:58,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:38:58,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:38:58,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:38:58,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:38:58,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:38:55" (1/3) ... [2021-11-22 14:38:58,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741eb5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:38:58, skipping insertion in model container [2021-11-22 14:38:58,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:56" (2/3) ... [2021-11-22 14:38:58,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741eb5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:38:58, skipping insertion in model container [2021-11-22 14:38:58,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:38:58" (3/3) ... [2021-11-22 14:38:58,687 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2021-11-22 14:38:58,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:38:58,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 14:38:58,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:38:58,772 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 14:38:58,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 14:38:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 450 states, 447 states have (on average 1.6979865771812082) internal successors, (759), 449 states have internal predecessors, (759), 0 states have call successors, (0), 0 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 14:38:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 14:38:58,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:38:58,823 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] [2021-11-22 14:38:58,824 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:38:58,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:38:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1648745788, now seen corresponding path program 1 times [2021-11-22 14:38:58,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:38:58,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970540774] [2021-11-22 14:38:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:38:58,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:38:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:38:59,379 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 14:38:59,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:38:59,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970540774] [2021-11-22 14:38:59,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970540774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:38:59,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:38:59,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:38:59,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474663014] [2021-11-22 14:38:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:38:59,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:38:59,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:38:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:38:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:38:59,458 INFO L87 Difference]: Start difference. First operand has 450 states, 447 states have (on average 1.6979865771812082) internal successors, (759), 449 states have internal predecessors, (759), 0 states have call successors, (0), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 14:38:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:38:59,671 INFO L93 Difference]: Finished difference Result 1305 states and 2209 transitions. [2021-11-22 14:38:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:38:59,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-22 14:38:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:38:59,703 INFO L225 Difference]: With dead ends: 1305 [2021-11-22 14:38:59,704 INFO L226 Difference]: Without dead ends: 761 [2021-11-22 14:38:59,712 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 14:38:59,717 INFO L933 BasicCegarLoop]: 1465 mSDtfsCounter, 728 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2188 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 14:38:59,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 2188 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:38:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-11-22 14:38:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 391. [2021-11-22 14:38:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.7017994858611825) internal successors, (662), 390 states have internal predecessors, (662), 0 states have call successors, (0), 0 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 14:38:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 662 transitions. [2021-11-22 14:38:59,825 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 662 transitions. Word has length 48 [2021-11-22 14:38:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:38:59,826 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 662 transitions. [2021-11-22 14:38:59,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 14:38:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 662 transitions. [2021-11-22 14:38:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-22 14:38:59,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:38:59,833 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] [2021-11-22 14:38:59,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:38:59,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:38:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:38:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash -563429503, now seen corresponding path program 1 times [2021-11-22 14:38:59,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:38:59,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799808789] [2021-11-22 14:38:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:38:59,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:38:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:38:59,993 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 14:38:59,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:38:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799808789] [2021-11-22 14:38:59,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799808789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:38:59,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:38:59,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:38:59,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877761237] [2021-11-22 14:38:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:00,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:39:00,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:39:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:39:00,003 INFO L87 Difference]: Start difference. First operand 391 states and 662 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 14:39:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:00,268 INFO L93 Difference]: Finished difference Result 1114 states and 1894 transitions. [2021-11-22 14:39:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:39:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-22 14:39:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:00,278 INFO L225 Difference]: With dead ends: 1114 [2021-11-22 14:39:00,279 INFO L226 Difference]: Without dead ends: 746 [2021-11-22 14:39:00,290 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 14:39:00,293 INFO L933 BasicCegarLoop]: 1232 mSDtfsCounter, 1278 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 3072 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 14:39:00,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 3072 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:39:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-22 14:39:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 391. [2021-11-22 14:39:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.699228791773779) internal successors, (661), 390 states have internal predecessors, (661), 0 states have call successors, (0), 0 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 14:39:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 661 transitions. [2021-11-22 14:39:00,380 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 661 transitions. Word has length 50 [2021-11-22 14:39:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:00,382 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 661 transitions. [2021-11-22 14:39:00,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 14:39:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 661 transitions. [2021-11-22 14:39:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 14:39:00,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:00,399 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] [2021-11-22 14:39:00,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:39:00,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:00,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 805322374, now seen corresponding path program 1 times [2021-11-22 14:39:00,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4475935] [2021-11-22 14:39:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:00,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:39:00,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:00,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4475935] [2021-11-22 14:39:00,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4475935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:00,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:00,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:00,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440937431] [2021-11-22 14:39:00,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:00,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:00,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:00,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:00,538 INFO L87 Difference]: Start difference. First operand 391 states and 661 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 14:39:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:00,589 INFO L93 Difference]: Finished difference Result 761 states and 1293 transitions. [2021-11-22 14:39:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-22 14:39:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:00,594 INFO L225 Difference]: With dead ends: 761 [2021-11-22 14:39:00,595 INFO L226 Difference]: Without dead ends: 398 [2021-11-22 14:39:00,596 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 14:39:00,598 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 634 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 687 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 14:39:00,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 687 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-22 14:39:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2021-11-22 14:39:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.6915167095115682) internal successors, (658), 390 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 14:39:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 658 transitions. [2021-11-22 14:39:00,628 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 658 transitions. Word has length 51 [2021-11-22 14:39:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:00,629 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 658 transitions. [2021-11-22 14:39:00,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 14:39:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 658 transitions. [2021-11-22 14:39:00,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 14:39:00,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:00,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:00,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:39:00,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash 317826539, now seen corresponding path program 1 times [2021-11-22 14:39:00,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:00,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858075184] [2021-11-22 14:39:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:00,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:00,726 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 14:39:00,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858075184] [2021-11-22 14:39:00,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858075184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:00,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:00,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:39:00,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681380480] [2021-11-22 14:39:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:00,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:39:00,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:39:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:39:00,732 INFO L87 Difference]: Start difference. First operand 391 states and 658 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:00,927 INFO L93 Difference]: Finished difference Result 1101 states and 1871 transitions. [2021-11-22 14:39:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:39:00,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 14:39:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:00,935 INFO L225 Difference]: With dead ends: 1101 [2021-11-22 14:39:00,935 INFO L226 Difference]: Without dead ends: 743 [2021-11-22 14:39:00,936 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 14:39:00,938 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 3041 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 1297 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 14:39:00,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3041 Valid, 1297 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:39:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-22 14:39:00,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 391. [2021-11-22 14:39:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.6889460154241644) internal successors, (657), 390 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 14:39:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 657 transitions. [2021-11-22 14:39:00,971 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 657 transitions. Word has length 53 [2021-11-22 14:39:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:00,972 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 657 transitions. [2021-11-22 14:39:00,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:00,972 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 657 transitions. [2021-11-22 14:39:00,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 14:39:00,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:00,974 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] [2021-11-22 14:39:00,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:39:00,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:00,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1942238492, now seen corresponding path program 1 times [2021-11-22 14:39:00,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:00,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371301287] [2021-11-22 14:39:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:00,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:01,053 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 14:39:01,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:01,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371301287] [2021-11-22 14:39:01,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371301287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:01,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:01,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:39:01,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282368554] [2021-11-22 14:39:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:01,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:39:01,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:01,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:39:01,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:39:01,060 INFO L87 Difference]: Start difference. First operand 391 states and 657 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 14:39:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:01,249 INFO L93 Difference]: Finished difference Result 1108 states and 1877 transitions. [2021-11-22 14:39:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:39:01,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-22 14:39:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:01,257 INFO L225 Difference]: With dead ends: 1108 [2021-11-22 14:39:01,258 INFO L226 Difference]: Without dead ends: 750 [2021-11-22 14:39:01,259 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 14:39:01,262 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 3045 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 1300 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 14:39:01,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 1300 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:39:01,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-22 14:39:01,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 391. [2021-11-22 14:39:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.686375321336761) internal successors, (656), 390 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 14:39:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 656 transitions. [2021-11-22 14:39:01,305 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 656 transitions. Word has length 54 [2021-11-22 14:39:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:01,306 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 656 transitions. [2021-11-22 14:39:01,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 14:39:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 656 transitions. [2021-11-22 14:39:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 14:39:01,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:01,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:01,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:39:01,314 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash -514281242, now seen corresponding path program 1 times [2021-11-22 14:39:01,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:01,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788093063] [2021-11-22 14:39:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:01,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:01,442 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 14:39:01,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788093063] [2021-11-22 14:39:01,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788093063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:01,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:01,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:01,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917261022] [2021-11-22 14:39:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:01,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:01,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:01,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:01,448 INFO L87 Difference]: Start difference. First operand 391 states and 656 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:01,483 INFO L93 Difference]: Finished difference Result 527 states and 871 transitions. [2021-11-22 14:39:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 14:39:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:01,499 INFO L225 Difference]: With dead ends: 527 [2021-11-22 14:39:01,499 INFO L226 Difference]: Without dead ends: 394 [2021-11-22 14:39:01,500 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 14:39:01,503 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 1 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1306 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 14:39:01,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1306 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-22 14:39:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2021-11-22 14:39:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 391 states have (on average 1.6828644501278773) internal successors, (658), 392 states have internal predecessors, (658), 0 states have call successors, (0), 0 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 14:39:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 658 transitions. [2021-11-22 14:39:01,539 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 658 transitions. Word has length 55 [2021-11-22 14:39:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:01,540 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 658 transitions. [2021-11-22 14:39:01,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 658 transitions. [2021-11-22 14:39:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:39:01,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:01,544 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] [2021-11-22 14:39:01,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:39:01,545 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1091477483, now seen corresponding path program 1 times [2021-11-22 14:39:01,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:01,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761463938] [2021-11-22 14:39:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:01,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:01,627 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 14:39:01,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:01,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761463938] [2021-11-22 14:39:01,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761463938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:01,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:01,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:01,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462573375] [2021-11-22 14:39:01,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:01,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:01,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:01,631 INFO L87 Difference]: Start difference. First operand 393 states and 658 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 14:39:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:01,718 INFO L93 Difference]: Finished difference Result 1051 states and 1784 transitions. [2021-11-22 14:39:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 14:39:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:01,728 INFO L225 Difference]: With dead ends: 1051 [2021-11-22 14:39:01,728 INFO L226 Difference]: Without dead ends: 696 [2021-11-22 14:39:01,730 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 14:39:01,734 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 606 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1212 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 14:39:01,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1212 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:01,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-22 14:39:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 563. [2021-11-22 14:39:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 561 states have (on average 1.71301247771836) internal successors, (961), 562 states have internal predecessors, (961), 0 states have call successors, (0), 0 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 14:39:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 961 transitions. [2021-11-22 14:39:01,791 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 961 transitions. Word has length 64 [2021-11-22 14:39:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:01,792 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 961 transitions. [2021-11-22 14:39:01,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 14:39:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 961 transitions. [2021-11-22 14:39:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 14:39:01,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:01,794 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] [2021-11-22 14:39:01,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:39:01,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:01,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash -188847559, now seen corresponding path program 1 times [2021-11-22 14:39:01,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:01,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078243857] [2021-11-22 14:39:01,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:01,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:01,912 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 14:39:01,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078243857] [2021-11-22 14:39:01,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078243857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:01,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:01,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:39:01,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874983249] [2021-11-22 14:39:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:01,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:39:01,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:39:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:39:01,917 INFO L87 Difference]: Start difference. First operand 563 states and 961 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 14:39:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:02,132 INFO L93 Difference]: Finished difference Result 1603 states and 2773 transitions. [2021-11-22 14:39:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:39:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 14:39:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:02,143 INFO L225 Difference]: With dead ends: 1603 [2021-11-22 14:39:02,143 INFO L226 Difference]: Without dead ends: 1078 [2021-11-22 14:39:02,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:39:02,145 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 1247 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:39:02,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1247 Valid, 3092 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:39:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-22 14:39:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 563. [2021-11-22 14:39:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 561 states have (on average 1.7094474153297683) internal successors, (959), 562 states have internal predecessors, (959), 0 states have call successors, (0), 0 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 14:39:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 959 transitions. [2021-11-22 14:39:02,223 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 959 transitions. Word has length 65 [2021-11-22 14:39:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:02,224 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 959 transitions. [2021-11-22 14:39:02,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 14:39:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 959 transitions. [2021-11-22 14:39:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 14:39:02,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:02,227 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] [2021-11-22 14:39:02,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:39:02,229 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:02,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1363554104, now seen corresponding path program 1 times [2021-11-22 14:39:02,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:02,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638031625] [2021-11-22 14:39:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:02,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:02,301 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 14:39:02,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:02,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638031625] [2021-11-22 14:39:02,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638031625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:02,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:02,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:02,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617238998] [2021-11-22 14:39:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:02,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:02,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:02,306 INFO L87 Difference]: Start difference. First operand 563 states and 959 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:02,427 INFO L93 Difference]: Finished difference Result 1601 states and 2765 transitions. [2021-11-22 14:39:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 14:39:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:02,438 INFO L225 Difference]: With dead ends: 1601 [2021-11-22 14:39:02,438 INFO L226 Difference]: Without dead ends: 1076 [2021-11-22 14:39:02,440 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 14:39:02,443 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 603 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1509 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 14:39:02,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1509 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:02,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-11-22 14:39:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 943. [2021-11-22 14:39:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 941 states have (on average 1.742826780021254) internal successors, (1640), 942 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 14:39:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1640 transitions. [2021-11-22 14:39:02,555 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1640 transitions. Word has length 66 [2021-11-22 14:39:02,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:02,556 INFO L470 AbstractCegarLoop]: Abstraction has 943 states and 1640 transitions. [2021-11-22 14:39:02,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1640 transitions. [2021-11-22 14:39:02,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 14:39:02,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:02,559 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] [2021-11-22 14:39:02,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:39:02,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1272758303, now seen corresponding path program 1 times [2021-11-22 14:39:02,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:02,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375021338] [2021-11-22 14:39:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:02,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:02,622 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 14:39:02,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375021338] [2021-11-22 14:39:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375021338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:39:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473528618] [2021-11-22 14:39:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:02,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:39:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:39:02,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:39:02,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:39:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:02,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:39:02,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:39:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:39:03,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:39:03,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473528618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:03,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 14:39:03,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-22 14:39:03,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388378931] [2021-11-22 14:39:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:03,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:03,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:39:03,132 INFO L87 Difference]: Start difference. First operand 943 states and 1640 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 14:39:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:03,256 INFO L93 Difference]: Finished difference Result 1030 states and 1775 transitions. [2021-11-22 14:39:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:03,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 66 [2021-11-22 14:39:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:03,266 INFO L225 Difference]: With dead ends: 1030 [2021-11-22 14:39:03,267 INFO L226 Difference]: Without dead ends: 937 [2021-11-22 14:39:03,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:39:03,269 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 450 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:39:03,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 778 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-22 14:39:03,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2021-11-22 14:39:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.7425213675213675) internal successors, (1631), 936 states have internal predecessors, (1631), 0 states have call successors, (0), 0 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 14:39:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1631 transitions. [2021-11-22 14:39:03,386 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1631 transitions. Word has length 66 [2021-11-22 14:39:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:03,387 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1631 transitions. [2021-11-22 14:39:03,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 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 14:39:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1631 transitions. [2021-11-22 14:39:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-22 14:39:03,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:03,400 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:03,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:39:03,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 14:39:03,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash -563612475, now seen corresponding path program 1 times [2021-11-22 14:39:03,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:03,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685602381] [2021-11-22 14:39:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:03,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:03,691 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 14:39:03,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:03,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685602381] [2021-11-22 14:39:03,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685602381] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:39:03,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331613992] [2021-11-22 14:39:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:03,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:39:03,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:39:03,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:39:03,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:39:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:04,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:39:04,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:39:04,289 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 14:39:04,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:39:04,509 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 14:39:04,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331613992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:39:04,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:39:04,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 14:39:04,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838018544] [2021-11-22 14:39:04,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:39:04,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:39:04,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:39:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:39:04,513 INFO L87 Difference]: Start difference. First operand 937 states and 1631 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 14:39:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:04,818 INFO L93 Difference]: Finished difference Result 3053 states and 5315 transitions. [2021-11-22 14:39:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:39:04,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-22 14:39:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:04,844 INFO L225 Difference]: With dead ends: 3053 [2021-11-22 14:39:04,844 INFO L226 Difference]: Without dead ends: 2926 [2021-11-22 14:39:04,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 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 14:39:04,850 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 2372 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:39:04,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2372 Valid, 3718 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-11-22 14:39:05,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2545. [2021-11-22 14:39:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.7672955974842768) internal successors, (4496), 2544 states have internal predecessors, (4496), 0 states have call successors, (0), 0 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 14:39:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4496 transitions. [2021-11-22 14:39:05,115 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4496 transitions. Word has length 102 [2021-11-22 14:39:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:05,116 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 4496 transitions. [2021-11-22 14:39:05,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 14:39:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4496 transitions. [2021-11-22 14:39:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-22 14:39:05,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:05,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:05,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:39:05,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6bc6a8-4c78-4654-ac32-3dd430366dbf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:39:05,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:05,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1146047731, now seen corresponding path program 1 times [2021-11-22 14:39:05,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:05,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233377626] [2021-11-22 14:39:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:05,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:05,445 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 14:39:05,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:05,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233377626] [2021-11-22 14:39:05,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233377626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:05,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:05,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:05,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916108474] [2021-11-22 14:39:05,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:05,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:05,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:05,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:05,449 INFO L87 Difference]: Start difference. First operand 2545 states and 4496 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:05,762 INFO L93 Difference]: Finished difference Result 6579 states and 11658 transitions. [2021-11-22 14:39:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-22 14:39:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:05,797 INFO L225 Difference]: With dead ends: 6579 [2021-11-22 14:39:05,798 INFO L226 Difference]: Without dead ends: 4234 [2021-11-22 14:39:05,803 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 14:39:05,804 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 592 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1279 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 14:39:05,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1279 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-11-22 14:39:06,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4107. [2021-11-22 14:39:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4107 states, 4106 states have (on average 1.771797369702874) internal successors, (7275), 4106 states have internal predecessors, (7275), 0 states have call successors, (0), 0 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 14:39:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 7275 transitions. [2021-11-22 14:39:06,213 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 7275 transitions. Word has length 105 [2021-11-22 14:39:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:06,213 INFO L470 AbstractCegarLoop]: Abstraction has 4107 states and 7275 transitions. [2021-11-22 14:39:06,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:06,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 7275 transitions. [2021-11-22 14:39:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 14:39:06,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:06,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:06,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:39:06,230 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1131263141, now seen corresponding path program 1 times [2021-11-22 14:39:06,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:06,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411871372] [2021-11-22 14:39:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:06,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:06,381 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 14:39:06,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:06,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411871372] [2021-11-22 14:39:06,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411871372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:06,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:06,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:06,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151532943] [2021-11-22 14:39:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:06,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:06,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:06,384 INFO L87 Difference]: Start difference. First operand 4107 states and 7275 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:06,885 INFO L93 Difference]: Finished difference Result 9938 states and 17617 transitions. [2021-11-22 14:39:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:06,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-22 14:39:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:06,938 INFO L225 Difference]: With dead ends: 9938 [2021-11-22 14:39:06,939 INFO L226 Difference]: Without dead ends: 6398 [2021-11-22 14:39:06,946 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 14:39:06,947 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 590 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1230 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 14:39:06,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 1230 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6398 states. [2021-11-22 14:39:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6398 to 6271. [2021-11-22 14:39:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 6270 states have (on average 1.7700159489633174) internal successors, (11098), 6270 states have internal predecessors, (11098), 0 states have call successors, (0), 0 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 14:39:07,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 11098 transitions. [2021-11-22 14:39:07,626 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 11098 transitions. Word has length 106 [2021-11-22 14:39:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:07,626 INFO L470 AbstractCegarLoop]: Abstraction has 6271 states and 11098 transitions. [2021-11-22 14:39:07,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 11098 transitions. [2021-11-22 14:39:07,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-22 14:39:07,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:07,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:07,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 14:39:07,654 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash 132097921, now seen corresponding path program 1 times [2021-11-22 14:39:07,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:07,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216916110] [2021-11-22 14:39:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:07,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:07,725 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 14:39:07,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:07,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216916110] [2021-11-22 14:39:07,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216916110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:07,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:07,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:07,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798616364] [2021-11-22 14:39:07,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:07,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:07,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:07,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:07,730 INFO L87 Difference]: Start difference. First operand 6271 states and 11098 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:08,489 INFO L93 Difference]: Finished difference Result 14851 states and 26290 transitions. [2021-11-22 14:39:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-22 14:39:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:08,558 INFO L225 Difference]: With dead ends: 14851 [2021-11-22 14:39:08,558 INFO L226 Difference]: Without dead ends: 9736 [2021-11-22 14:39:08,569 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 14:39:08,570 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 588 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1230 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 14:39:08,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1230 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:08,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-11-22 14:39:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 9609. [2021-11-22 14:39:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9609 states, 9608 states have (on average 1.7666527893422148) internal successors, (16974), 9608 states have internal predecessors, (16974), 0 states have call successors, (0), 0 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 14:39:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9609 states to 9609 states and 16974 transitions. [2021-11-22 14:39:09,538 INFO L78 Accepts]: Start accepts. Automaton has 9609 states and 16974 transitions. Word has length 107 [2021-11-22 14:39:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:09,539 INFO L470 AbstractCegarLoop]: Abstraction has 9609 states and 16974 transitions. [2021-11-22 14:39:09,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:39:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 9609 states and 16974 transitions. [2021-11-22 14:39:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-22 14:39:09,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:09,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:09,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 14:39:09,571 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash 35574549, now seen corresponding path program 1 times [2021-11-22 14:39:09,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:09,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374189031] [2021-11-22 14:39:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:09,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:09,646 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 14:39:09,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:09,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374189031] [2021-11-22 14:39:09,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374189031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:09,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:09,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:09,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632237853] [2021-11-22 14:39:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:09,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:09,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:09,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:09,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:09,650 INFO L87 Difference]: Start difference. First operand 9609 states and 16974 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 14:39:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:10,925 INFO L93 Difference]: Finished difference Result 24196 states and 42798 transitions. [2021-11-22 14:39:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:10,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-22 14:39:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:10,994 INFO L225 Difference]: With dead ends: 24196 [2021-11-22 14:39:10,995 INFO L226 Difference]: Without dead ends: 16211 [2021-11-22 14:39:11,015 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 14:39:11,016 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 586 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1286 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 14:39:11,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1286 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16211 states. [2021-11-22 14:39:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16211 to 16084. [2021-11-22 14:39:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16084 states, 16083 states have (on average 1.765217931977865) internal successors, (28390), 16083 states have internal predecessors, (28390), 0 states have call successors, (0), 0 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 14:39:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16084 states to 16084 states and 28390 transitions. [2021-11-22 14:39:12,290 INFO L78 Accepts]: Start accepts. Automaton has 16084 states and 28390 transitions. Word has length 108 [2021-11-22 14:39:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:12,290 INFO L470 AbstractCegarLoop]: Abstraction has 16084 states and 28390 transitions. [2021-11-22 14:39:12,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 14:39:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 16084 states and 28390 transitions. [2021-11-22 14:39:12,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-22 14:39:12,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:12,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:12,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 14:39:12,340 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash -713672431, now seen corresponding path program 1 times [2021-11-22 14:39:12,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:12,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926094768] [2021-11-22 14:39:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:12,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:12,419 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 14:39:12,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:12,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926094768] [2021-11-22 14:39:12,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926094768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:12,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:12,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:12,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60882414] [2021-11-22 14:39:12,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:12,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:12,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:12,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:12,423 INFO L87 Difference]: Start difference. First operand 16084 states and 28390 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 14:39:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:14,285 INFO L93 Difference]: Finished difference Result 41048 states and 72698 transitions. [2021-11-22 14:39:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:14,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-22 14:39:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:14,411 INFO L225 Difference]: With dead ends: 41048 [2021-11-22 14:39:14,411 INFO L226 Difference]: Without dead ends: 27478 [2021-11-22 14:39:14,439 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 14:39:14,440 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 584 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1277 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 14:39:14,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1277 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27478 states. [2021-11-22 14:39:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27478 to 27351. [2021-11-22 14:39:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27351 states, 27350 states have (on average 1.7676416819012797) internal successors, (48345), 27350 states have internal predecessors, (48345), 0 states have call successors, (0), 0 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 14:39:16,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27351 states to 27351 states and 48345 transitions. [2021-11-22 14:39:16,545 INFO L78 Accepts]: Start accepts. Automaton has 27351 states and 48345 transitions. Word has length 109 [2021-11-22 14:39:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:16,546 INFO L470 AbstractCegarLoop]: Abstraction has 27351 states and 48345 transitions. [2021-11-22 14:39:16,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 14:39:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27351 states and 48345 transitions. [2021-11-22 14:39:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 14:39:16,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:16,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:16,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 14:39:16,604 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:16,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1962926323, now seen corresponding path program 1 times [2021-11-22 14:39:16,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993821913] [2021-11-22 14:39:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:16,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:16,680 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 14:39:16,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:16,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993821913] [2021-11-22 14:39:16,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993821913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:16,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:16,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:16,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349787242] [2021-11-22 14:39:16,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:16,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:16,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:16,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:16,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:16,685 INFO L87 Difference]: Start difference. First operand 27351 states and 48345 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 14:39:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:19,049 INFO L93 Difference]: Finished difference Result 72878 states and 129028 transitions. [2021-11-22 14:39:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:19,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 14:39:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:19,193 INFO L225 Difference]: With dead ends: 72878 [2021-11-22 14:39:19,194 INFO L226 Difference]: Without dead ends: 48973 [2021-11-22 14:39:19,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:19,231 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 582 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1286 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 14:39:19,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 1286 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48973 states. [2021-11-22 14:39:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48973 to 48846. [2021-11-22 14:39:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48846 states, 48845 states have (on average 1.7658511618384687) internal successors, (86253), 48845 states have internal predecessors, (86253), 0 states have call successors, (0), 0 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 14:39:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48846 states to 48846 states and 86253 transitions. [2021-11-22 14:39:22,540 INFO L78 Accepts]: Start accepts. Automaton has 48846 states and 86253 transitions. Word has length 110 [2021-11-22 14:39:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:22,540 INFO L470 AbstractCegarLoop]: Abstraction has 48846 states and 86253 transitions. [2021-11-22 14:39:22,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 14:39:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 48846 states and 86253 transitions. [2021-11-22 14:39:22,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-22 14:39:22,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:22,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:22,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 14:39:22,606 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2110064547, now seen corresponding path program 1 times [2021-11-22 14:39:22,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465750558] [2021-11-22 14:39:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:22,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:22,671 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 14:39:22,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:22,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465750558] [2021-11-22 14:39:22,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465750558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:22,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:22,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:22,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097261852] [2021-11-22 14:39:22,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:22,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:22,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:22,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:22,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:22,675 INFO L87 Difference]: Start difference. First operand 48846 states and 86253 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 14:39:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:26,563 INFO L93 Difference]: Finished difference Result 125011 states and 220666 transitions. [2021-11-22 14:39:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:26,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-22 14:39:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:26,777 INFO L225 Difference]: With dead ends: 125011 [2021-11-22 14:39:26,777 INFO L226 Difference]: Without dead ends: 81914 [2021-11-22 14:39:26,831 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 14:39:26,832 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 580 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1230 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 14:39:26,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1230 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81914 states. [2021-11-22 14:39:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81914 to 81787. [2021-11-22 14:39:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81787 states, 81786 states have (on average 1.7593475655980242) internal successors, (143890), 81786 states have internal predecessors, (143890), 0 states have call successors, (0), 0 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 14:39:31,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81787 states to 81787 states and 143890 transitions. [2021-11-22 14:39:31,950 INFO L78 Accepts]: Start accepts. Automaton has 81787 states and 143890 transitions. Word has length 111 [2021-11-22 14:39:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:31,951 INFO L470 AbstractCegarLoop]: Abstraction has 81787 states and 143890 transitions. [2021-11-22 14:39:31,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 14:39:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 81787 states and 143890 transitions. [2021-11-22 14:39:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 14:39:32,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:32,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:32,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 14:39:32,021 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1758258159, now seen corresponding path program 1 times [2021-11-22 14:39:32,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276691652] [2021-11-22 14:39:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:32,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:32,079 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 14:39:32,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:32,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276691652] [2021-11-22 14:39:32,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276691652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:32,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:32,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:32,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396067314] [2021-11-22 14:39:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:32,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:32,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:32,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:32,082 INFO L87 Difference]: Start difference. First operand 81787 states and 143890 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 14:39:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:39:39,137 INFO L93 Difference]: Finished difference Result 225428 states and 397773 transitions. [2021-11-22 14:39:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:39:39,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-22 14:39:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:39:39,544 INFO L225 Difference]: With dead ends: 225428 [2021-11-22 14:39:39,544 INFO L226 Difference]: Without dead ends: 151018 [2021-11-22 14:39:39,632 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 14:39:39,633 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 578 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1277 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 14:39:39,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1277 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:39:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151018 states. [2021-11-22 14:39:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151018 to 150891. [2021-11-22 14:39:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150891 states, 150890 states have (on average 1.761574657034926) internal successors, (265804), 150890 states have internal predecessors, (265804), 0 states have call successors, (0), 0 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 14:39:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150891 states to 150891 states and 265804 transitions. [2021-11-22 14:39:48,980 INFO L78 Accepts]: Start accepts. Automaton has 150891 states and 265804 transitions. Word has length 112 [2021-11-22 14:39:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:39:48,981 INFO L470 AbstractCegarLoop]: Abstraction has 150891 states and 265804 transitions. [2021-11-22 14:39:48,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 14:39:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 150891 states and 265804 transitions. [2021-11-22 14:39:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 14:39:49,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:39:49,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:39:49,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 14:39:49,063 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:39:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:39:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1442485741, now seen corresponding path program 1 times [2021-11-22 14:39:49,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:39:49,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939658185] [2021-11-22 14:39:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:39:49,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:39:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:39:49,130 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 14:39:49,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:39:49,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939658185] [2021-11-22 14:39:49,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939658185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:39:49,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:39:49,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:39:49,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415569962] [2021-11-22 14:39:49,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:39:49,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:39:49,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:39:49,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:39:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:39:49,134 INFO L87 Difference]: Start difference. First operand 150891 states and 265804 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)