./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX --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 c1a514ed3c88dbb6b86d895b5ccbc4ee84ef064cf150167d71ca780388d60956 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:51,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:51,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:51,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:51,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:51,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:51,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:51,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:51,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:51,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:51,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:51,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:51,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:51,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:51,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:52,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:52,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:52,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:52,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:52,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:52,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:52,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:52,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:52,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:52,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:52,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:52,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:52,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:52,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:52,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:52,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:52,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:52,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:52,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:52,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:52,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:52,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:52,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:52,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:52,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:52,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:52,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:29:52,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:52,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:52,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:52,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:52,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:52,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:52,106 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:52,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:52,106 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:52,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:52,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:52,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:52,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:29:52,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:52,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:29:52,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:52,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:29:52,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:52,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:29:52,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:52,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:52,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:52,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:52,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:52,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:52,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:29:52,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:52,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:29:52,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:29:52,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:29:52,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:29:52,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:52,115 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_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1a514ed3c88dbb6b86d895b5ccbc4ee84ef064cf150167d71ca780388d60956 [2021-11-09 08:29:52,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:52,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:52,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:52,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:52,522 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:52,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec3_product13.cil.c [2021-11-09 08:29:52,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/data/cf0baa604/26960a46692a4c2fba6b821f0871b20c/FLAGf16f42643 [2021-11-09 08:29:53,208 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:53,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/sv-benchmarks/c/product-lines/email_spec3_product13.cil.c [2021-11-09 08:29:53,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/data/cf0baa604/26960a46692a4c2fba6b821f0871b20c/FLAGf16f42643 [2021-11-09 08:29:53,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/data/cf0baa604/26960a46692a4c2fba6b821f0871b20c [2021-11-09 08:29:53,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:53,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:29:53,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:53,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:53,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:53,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a02dc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:53, skipping insertion in model container [2021-11-09 08:29:53,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:53" (1/1) ... [2021-11-09 08:29:53,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:53,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:54,280 WARN L228 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_9f5bce22-13ba-4b0f-8504-8473fd858ac9/sv-benchmarks/c/product-lines/email_spec3_product13.cil.c[62004,62017] [2021-11-09 08:29:54,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:54,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:54,456 WARN L228 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_9f5bce22-13ba-4b0f-8504-8473fd858ac9/sv-benchmarks/c/product-lines/email_spec3_product13.cil.c[62004,62017] [2021-11-09 08:29:54,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:54,489 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:54,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54 WrapperNode [2021-11-09 08:29:54,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:54,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:54,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:29:54,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:29:54,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:54,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:54,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:54,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:54,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:54,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:54,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:54,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:54,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (1/1) ... [2021-11-09 08:29:54,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:54,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:54,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:54,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:54,871 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 08:29:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:29:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:29:54,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:54,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:57,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:29:57,109 INFO L299 CfgBuilder]: Removed 255 assume(true) statements. [2021-11-09 08:29:57,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:57 BoogieIcfgContainer [2021-11-09 08:29:57,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:29:57,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:29:57,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:29:57,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:29:57,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:53" (1/3) ... [2021-11-09 08:29:57,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7dcb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:57, skipping insertion in model container [2021-11-09 08:29:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:54" (2/3) ... [2021-11-09 08:29:57,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7dcb42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:57, skipping insertion in model container [2021-11-09 08:29:57,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:57" (3/3) ... [2021-11-09 08:29:57,125 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product13.cil.c [2021-11-09 08:29:57,134 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:29:57,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-09 08:29:57,198 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:29:57,203 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 [2021-11-09 08:29:57,203 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-09 08:29:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 421 states, 416 states have (on average 1.7716346153846154) internal successors, (737), 420 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 08:29:57,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:57,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:29:57,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 510644634, now seen corresponding path program 1 times [2021-11-09 08:29:57,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354977600] [2021-11-09 08:29:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:57,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:57,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354977600] [2021-11-09 08:29:57,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354977600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:57,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:57,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:57,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575519359] [2021-11-09 08:29:57,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:57,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:57,690 INFO L87 Difference]: Start difference. First operand has 421 states, 416 states have (on average 1.7716346153846154) internal successors, (737), 420 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:57,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:57,849 INFO L93 Difference]: Finished difference Result 1228 states and 2153 transitions. [2021-11-09 08:29:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-09 08:29:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:57,878 INFO L225 Difference]: With dead ends: 1228 [2021-11-09 08:29:57,879 INFO L226 Difference]: Without dead ends: 750 [2021-11-09 08:29:57,888 INFO L786 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 [2021-11-09 08:29:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-11-09 08:29:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 384. [2021-11-09 08:29:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.75) internal successors, (665), 383 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 665 transitions. [2021-11-09 08:29:57,988 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 665 transitions. Word has length 46 [2021-11-09 08:29:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:57,988 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 665 transitions. [2021-11-09 08:29:57,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 665 transitions. [2021-11-09 08:29:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 08:29:57,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:57,993 INFO L513 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] [2021-11-09 08:29:57,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:29:57,994 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1971368564, now seen corresponding path program 1 times [2021-11-09 08:29:57,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281183838] [2021-11-09 08:29:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:58,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281183838] [2021-11-09 08:29:58,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281183838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:58,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:58,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:29:58,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930501290] [2021-11-09 08:29:58,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:29:58,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:58,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:29:58,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:29:58,137 INFO L87 Difference]: Start difference. First operand 384 states and 665 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2021-11-09 08:29:58,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:58,308 INFO L93 Difference]: Finished difference Result 1101 states and 1911 transitions. [2021-11-09 08:29:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:29:58,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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 [2021-11-09 08:29:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:58,314 INFO L225 Difference]: With dead ends: 1101 [2021-11-09 08:29:58,315 INFO L226 Difference]: Without dead ends: 736 [2021-11-09 08:29:58,316 INFO L786 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 [2021-11-09 08:29:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-11-09 08:29:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 384. [2021-11-09 08:29:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.7473684210526317) internal successors, (664), 383 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 664 transitions. [2021-11-09 08:29:58,340 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 664 transitions. Word has length 48 [2021-11-09 08:29:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:58,340 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 664 transitions. [2021-11-09 08:29:58,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2021-11-09 08:29:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 664 transitions. [2021-11-09 08:29:58,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 08:29:58,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:58,345 INFO L513 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] [2021-11-09 08:29:58,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:29:58,345 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash -181699879, now seen corresponding path program 1 times [2021-11-09 08:29:58,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299781444] [2021-11-09 08:29:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:58,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299781444] [2021-11-09 08:29:58,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299781444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:58,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:58,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:58,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016980744] [2021-11-09 08:29:58,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:58,507 INFO L87 Difference]: Start difference. First operand 384 states and 664 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:58,542 INFO L93 Difference]: Finished difference Result 750 states and 1302 transitions. [2021-11-09 08:29:58,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:58,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-09 08:29:58,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:58,546 INFO L225 Difference]: With dead ends: 750 [2021-11-09 08:29:58,546 INFO L226 Difference]: Without dead ends: 389 [2021-11-09 08:29:58,547 INFO L786 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 [2021-11-09 08:29:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-09 08:29:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 384. [2021-11-09 08:29:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.7447368421052631) internal successors, (663), 383 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 663 transitions. [2021-11-09 08:29:58,565 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 663 transitions. Word has length 49 [2021-11-09 08:29:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:58,566 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 663 transitions. [2021-11-09 08:29:58,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 663 transitions. [2021-11-09 08:29:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 08:29:58,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:58,568 INFO L513 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] [2021-11-09 08:29:58,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:29:58,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash -347648097, now seen corresponding path program 1 times [2021-11-09 08:29:58,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433996231] [2021-11-09 08:29:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:58,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433996231] [2021-11-09 08:29:58,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433996231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:58,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:58,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:58,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176675613] [2021-11-09 08:29:58,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:58,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:58,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:58,716 INFO L87 Difference]: Start difference. First operand 384 states and 663 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-11-09 08:29:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:58,760 INFO L93 Difference]: Finished difference Result 760 states and 1315 transitions. [2021-11-09 08:29:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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 [2021-11-09 08:29:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:58,764 INFO L225 Difference]: With dead ends: 760 [2021-11-09 08:29:58,765 INFO L226 Difference]: Without dead ends: 384 [2021-11-09 08:29:58,767 INFO L786 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 [2021-11-09 08:29:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-09 08:29:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-11-09 08:29:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.7394736842105263) internal successors, (661), 383 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) [2021-11-09 08:29:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 661 transitions. [2021-11-09 08:29:58,785 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 661 transitions. Word has length 50 [2021-11-09 08:29:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:58,786 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 661 transitions. [2021-11-09 08:29:58,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2021-11-09 08:29:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 661 transitions. [2021-11-09 08:29:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 08:29:58,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:58,801 INFO L513 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] [2021-11-09 08:29:58,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:29:58,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash -364582860, now seen corresponding path program 1 times [2021-11-09 08:29:58,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174261342] [2021-11-09 08:29:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:58,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174261342] [2021-11-09 08:29:58,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174261342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:58,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:58,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:29:58,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590618626] [2021-11-09 08:29:58,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:29:58,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:29:58,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:29:58,889 INFO L87 Difference]: Start difference. First operand 384 states and 661 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2021-11-09 08:29:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,070 INFO L93 Difference]: Finished difference Result 1091 states and 1891 transitions. [2021-11-09 08:29:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:29:59,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 [2021-11-09 08:29:59,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,077 INFO L225 Difference]: With dead ends: 1091 [2021-11-09 08:29:59,077 INFO L226 Difference]: Without dead ends: 734 [2021-11-09 08:29:59,078 INFO L786 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 [2021-11-09 08:29:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-09 08:29:59,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 384. [2021-11-09 08:29:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.736842105263158) internal successors, (660), 383 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 660 transitions. [2021-11-09 08:29:59,102 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 660 transitions. Word has length 51 [2021-11-09 08:29:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:59,102 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 660 transitions. [2021-11-09 08:29:59,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2021-11-09 08:29:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 660 transitions. [2021-11-09 08:29:59,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-09 08:29:59,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,105 INFO L513 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] [2021-11-09 08:29:59,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:29:59,106 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1976604969, now seen corresponding path program 1 times [2021-11-09 08:29:59,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504175951] [2021-11-09 08:29:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:59,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504175951] [2021-11-09 08:29:59,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504175951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:59,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:59,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:29:59,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603816184] [2021-11-09 08:29:59,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:29:59,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:29:59,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:29:59,222 INFO L87 Difference]: Start difference. First operand 384 states and 660 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,368 INFO L93 Difference]: Finished difference Result 1096 states and 1896 transitions. [2021-11-09 08:29:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:29:59,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-09 08:29:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,373 INFO L225 Difference]: With dead ends: 1096 [2021-11-09 08:29:59,373 INFO L226 Difference]: Without dead ends: 739 [2021-11-09 08:29:59,374 INFO L786 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 [2021-11-09 08:29:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-11-09 08:29:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 384. [2021-11-09 08:29:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.7342105263157894) internal successors, (659), 383 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 659 transitions. [2021-11-09 08:29:59,401 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 659 transitions. Word has length 52 [2021-11-09 08:29:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:59,401 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 659 transitions. [2021-11-09 08:29:59,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 659 transitions. [2021-11-09 08:29:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 08:29:59,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,403 INFO L513 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] [2021-11-09 08:29:59,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:29:59,403 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1870267409, now seen corresponding path program 1 times [2021-11-09 08:29:59,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232036325] [2021-11-09 08:29:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:59,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232036325] [2021-11-09 08:29:59,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232036325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:59,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:59,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:59,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205661590] [2021-11-09 08:29:59,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:59,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:59,465 INFO L87 Difference]: Start difference. First operand 384 states and 659 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2021-11-09 08:29:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,491 INFO L93 Difference]: Finished difference Result 534 states and 901 transitions. [2021-11-09 08:29:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 [2021-11-09 08:29:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,494 INFO L225 Difference]: With dead ends: 534 [2021-11-09 08:29:59,494 INFO L226 Difference]: Without dead ends: 387 [2021-11-09 08:29:59,495 INFO L786 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 [2021-11-09 08:29:59,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-09 08:29:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 386. [2021-11-09 08:29:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 382 states have (on average 1.7303664921465969) internal successors, (661), 385 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) [2021-11-09 08:29:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 661 transitions. [2021-11-09 08:29:59,518 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 661 transitions. Word has length 53 [2021-11-09 08:29:59,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:59,518 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 661 transitions. [2021-11-09 08:29:59,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2021-11-09 08:29:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 661 transitions. [2021-11-09 08:29:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 08:29:59,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,520 INFO L513 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] [2021-11-09 08:29:59,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:29:59,520 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash 922162797, now seen corresponding path program 1 times [2021-11-09 08:29:59,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848206684] [2021-11-09 08:29:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:59,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848206684] [2021-11-09 08:29:59,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848206684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:59,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:59,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:59,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312303746] [2021-11-09 08:29:59,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:59,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:59,578 INFO L87 Difference]: Start difference. First operand 386 states and 661 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,624 INFO L93 Difference]: Finished difference Result 1044 states and 1807 transitions. [2021-11-09 08:29:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 08:29:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,629 INFO L225 Difference]: With dead ends: 1044 [2021-11-09 08:29:59,629 INFO L226 Difference]: Without dead ends: 689 [2021-11-09 08:29:59,630 INFO L786 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 [2021-11-09 08:29:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-11-09 08:29:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 542. [2021-11-09 08:29:59,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 538 states have (on average 1.7602230483271375) internal successors, (947), 541 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 947 transitions. [2021-11-09 08:29:59,688 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 947 transitions. Word has length 59 [2021-11-09 08:29:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:59,688 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 947 transitions. [2021-11-09 08:29:59,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 947 transitions. [2021-11-09 08:29:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-09 08:29:59,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,691 INFO L513 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] [2021-11-09 08:29:59,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:29:59,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:29:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1268123188, now seen corresponding path program 1 times [2021-11-09 08:29:59,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338692828] [2021-11-09 08:29:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:59,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338692828] [2021-11-09 08:29:59,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338692828] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:29:59,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250913951] [2021-11-09 08:29:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:29:59,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 08:30:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:00,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:00,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250913951] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:00,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:00,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 08:30:00,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606993284] [2021-11-09 08:30:00,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:00,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:00,346 INFO L87 Difference]: Start difference. First operand 542 states and 947 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:00,443 INFO L93 Difference]: Finished difference Result 1048 states and 1810 transitions. [2021-11-09 08:30:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-09 08:30:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:00,450 INFO L225 Difference]: With dead ends: 1048 [2021-11-09 08:30:00,450 INFO L226 Difference]: Without dead ends: 901 [2021-11-09 08:30:00,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-11-09 08:30:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 752. [2021-11-09 08:30:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 748 states have (on average 1.7780748663101604) internal successors, (1330), 751 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1330 transitions. [2021-11-09 08:30:00,527 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1330 transitions. Word has length 60 [2021-11-09 08:30:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:00,528 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1330 transitions. [2021-11-09 08:30:00,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1330 transitions. [2021-11-09 08:30:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-09 08:30:00,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:00,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:00,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-09 08:30:00,754 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1045894079, now seen corresponding path program 1 times [2021-11-09 08:30:00,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518811962] [2021-11-09 08:30:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:00,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:00,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518811962] [2021-11-09 08:30:00,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518811962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:00,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:00,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:00,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882304471] [2021-11-09 08:30:00,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:00,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:00,835 INFO L87 Difference]: Start difference. First operand 752 states and 1330 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) [2021-11-09 08:30:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:00,917 INFO L93 Difference]: Finished difference Result 1926 states and 3421 transitions. [2021-11-09 08:30:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:00,917 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 [2021-11-09 08:30:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:00,929 INFO L225 Difference]: With dead ends: 1926 [2021-11-09 08:30:00,930 INFO L226 Difference]: Without dead ends: 1263 [2021-11-09 08:30:00,931 INFO L786 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 [2021-11-09 08:30:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2021-11-09 08:30:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1116. [2021-11-09 08:30:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1112 states have (on average 1.7931654676258992) internal successors, (1994), 1115 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1994 transitions. [2021-11-09 08:30:01,007 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1994 transitions. Word has length 66 [2021-11-09 08:30:01,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:01,008 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1994 transitions. [2021-11-09 08:30:01,008 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) [2021-11-09 08:30:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1994 transitions. [2021-11-09 08:30:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 08:30:01,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:01,011 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:01,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:30:01,012 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 836966735, now seen corresponding path program 2 times [2021-11-09 08:30:01,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130637621] [2021-11-09 08:30:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:01,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130637621] [2021-11-09 08:30:01,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130637621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:01,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:01,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:01,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356166797] [2021-11-09 08:30:01,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:01,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:01,074 INFO L87 Difference]: Start difference. First operand 1116 states and 1994 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:01,170 INFO L93 Difference]: Finished difference Result 2136 states and 3802 transitions. [2021-11-09 08:30:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:01,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-09 08:30:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:01,180 INFO L225 Difference]: With dead ends: 2136 [2021-11-09 08:30:01,181 INFO L226 Difference]: Without dead ends: 1263 [2021-11-09 08:30:01,185 INFO L786 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 [2021-11-09 08:30:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2021-11-09 08:30:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1116. [2021-11-09 08:30:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1112 states have (on average 1.79136690647482) internal successors, (1992), 1115 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1992 transitions. [2021-11-09 08:30:01,253 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1992 transitions. Word has length 67 [2021-11-09 08:30:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:01,254 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1992 transitions. [2021-11-09 08:30:01,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1992 transitions. [2021-11-09 08:30:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-09 08:30:01,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:01,258 INFO L513 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] [2021-11-09 08:30:01,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:30:01,259 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2067319886, now seen corresponding path program 1 times [2021-11-09 08:30:01,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346085728] [2021-11-09 08:30:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:01,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346085728] [2021-11-09 08:30:01,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346085728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:01,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:01,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:01,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938465069] [2021-11-09 08:30:01,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:01,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:01,318 INFO L87 Difference]: Start difference. First operand 1116 states and 1992 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:01,429 INFO L93 Difference]: Finished difference Result 2990 states and 5362 transitions. [2021-11-09 08:30:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-09 08:30:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:01,466 INFO L225 Difference]: With dead ends: 2990 [2021-11-09 08:30:01,466 INFO L226 Difference]: Without dead ends: 1971 [2021-11-09 08:30:01,468 INFO L786 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 [2021-11-09 08:30:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2021-11-09 08:30:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1824. [2021-11-09 08:30:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1820 states have (on average 1.8038461538461539) internal successors, (3283), 1823 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 3283 transitions. [2021-11-09 08:30:01,586 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 3283 transitions. Word has length 67 [2021-11-09 08:30:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:01,586 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 3283 transitions. [2021-11-09 08:30:01,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 3283 transitions. [2021-11-09 08:30:01,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 08:30:01,590 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:01,590 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:01,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:30:01,590 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 301738497, now seen corresponding path program 1 times [2021-11-09 08:30:01,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555290696] [2021-11-09 08:30:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:01,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555290696] [2021-11-09 08:30:01,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555290696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:01,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:01,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:01,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412420833] [2021-11-09 08:30:01,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:01,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:01,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:01,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:01,652 INFO L87 Difference]: Start difference. First operand 1824 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:01,861 INFO L93 Difference]: Finished difference Result 4850 states and 8754 transitions. [2021-11-09 08:30:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-09 08:30:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:01,883 INFO L225 Difference]: With dead ends: 4850 [2021-11-09 08:30:01,883 INFO L226 Difference]: Without dead ends: 3157 [2021-11-09 08:30:01,887 INFO L786 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 [2021-11-09 08:30:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-11-09 08:30:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3010. [2021-11-09 08:30:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 3006 states have (on average 1.8097139055222888) internal successors, (5440), 3009 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5440 transitions. [2021-11-09 08:30:02,077 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5440 transitions. Word has length 68 [2021-11-09 08:30:02,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:02,077 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 5440 transitions. [2021-11-09 08:30:02,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5440 transitions. [2021-11-09 08:30:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:30:02,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:02,082 INFO L513 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] [2021-11-09 08:30:02,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:30:02,083 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1602755743, now seen corresponding path program 1 times [2021-11-09 08:30:02,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200852954] [2021-11-09 08:30:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:02,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:02,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200852954] [2021-11-09 08:30:02,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200852954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:02,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:02,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:02,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306055609] [2021-11-09 08:30:02,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:02,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:02,142 INFO L87 Difference]: Start difference. First operand 3010 states and 5440 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:02,424 INFO L93 Difference]: Finished difference Result 8124 states and 14708 transitions. [2021-11-09 08:30:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-09 08:30:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:02,458 INFO L225 Difference]: With dead ends: 8124 [2021-11-09 08:30:02,458 INFO L226 Difference]: Without dead ends: 5279 [2021-11-09 08:30:02,463 INFO L786 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 [2021-11-09 08:30:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2021-11-09 08:30:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 5132. [2021-11-09 08:30:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5128 states have (on average 1.811427457098284) internal successors, (9289), 5131 states have internal predecessors, (9289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 9289 transitions. [2021-11-09 08:30:02,786 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 9289 transitions. Word has length 69 [2021-11-09 08:30:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:02,787 INFO L470 AbstractCegarLoop]: Abstraction has 5132 states and 9289 transitions. [2021-11-09 08:30:02,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 9289 transitions. [2021-11-09 08:30:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 08:30:02,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:02,796 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:02,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:30:02,796 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash -813157981, now seen corresponding path program 1 times [2021-11-09 08:30:02,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698333099] [2021-11-09 08:30:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 08:30:02,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:02,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698333099] [2021-11-09 08:30:02,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698333099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:02,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:02,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:30:02,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023373570] [2021-11-09 08:30:02,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:02,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:02,887 INFO L87 Difference]: Start difference. First operand 5132 states and 9289 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) [2021-11-09 08:30:03,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:03,880 INFO L93 Difference]: Finished difference Result 14623 states and 26498 transitions. [2021-11-09 08:30:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:03,891 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 70 [2021-11-09 08:30:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:03,950 INFO L225 Difference]: With dead ends: 14623 [2021-11-09 08:30:03,950 INFO L226 Difference]: Without dead ends: 9734 [2021-11-09 08:30:03,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9734 states. [2021-11-09 08:30:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9734 to 5132. [2021-11-09 08:30:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5128 states have (on average 1.8016770670826834) internal successors, (9239), 5131 states have internal predecessors, (9239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 9239 transitions. [2021-11-09 08:30:04,422 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 9239 transitions. Word has length 70 [2021-11-09 08:30:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:04,422 INFO L470 AbstractCegarLoop]: Abstraction has 5132 states and 9239 transitions. [2021-11-09 08:30:04,423 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) [2021-11-09 08:30:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 9239 transitions. [2021-11-09 08:30:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 08:30:04,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,429 INFO L513 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] [2021-11-09 08:30:04,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 08:30:04,430 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:04,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1439768690, now seen corresponding path program 1 times [2021-11-09 08:30:04,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517086231] [2021-11-09 08:30:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:04,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517086231] [2021-11-09 08:30:04,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517086231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:04,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:04,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:04,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945373429] [2021-11-09 08:30:04,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:04,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:04,495 INFO L87 Difference]: Start difference. First operand 5132 states and 9239 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:05,013 INFO L93 Difference]: Finished difference Result 14948 states and 26950 transitions. [2021-11-09 08:30:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-09 08:30:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:05,049 INFO L225 Difference]: With dead ends: 14948 [2021-11-09 08:30:05,049 INFO L226 Difference]: Without dead ends: 9985 [2021-11-09 08:30:05,057 INFO L786 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 [2021-11-09 08:30:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2021-11-09 08:30:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9838. [2021-11-09 08:30:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9838 states, 9834 states have (on average 1.8019117347976408) internal successors, (17720), 9837 states have internal predecessors, (17720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9838 states to 9838 states and 17720 transitions. [2021-11-09 08:30:05,669 INFO L78 Accepts]: Start accepts. Automaton has 9838 states and 17720 transitions. Word has length 70 [2021-11-09 08:30:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:05,669 INFO L470 AbstractCegarLoop]: Abstraction has 9838 states and 17720 transitions. [2021-11-09 08:30:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 9838 states and 17720 transitions. [2021-11-09 08:30:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 08:30:05,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:05,678 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:05,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 08:30:05,679 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1313811294, now seen corresponding path program 1 times [2021-11-09 08:30:05,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:05,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543889785] [2021-11-09 08:30:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:05,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:30:05,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:05,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543889785] [2021-11-09 08:30:05,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543889785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:05,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:05,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 08:30:05,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482530066] [2021-11-09 08:30:05,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:05,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:05,777 INFO L87 Difference]: Start difference. First operand 9838 states and 17720 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2021-11-09 08:30:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:06,924 INFO L93 Difference]: Finished difference Result 19926 states and 35845 transitions. [2021-11-09 08:30:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:30:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 71 [2021-11-09 08:30:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:06,983 INFO L225 Difference]: With dead ends: 19926 [2021-11-09 08:30:06,984 INFO L226 Difference]: Without dead ends: 19797 [2021-11-09 08:30:06,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:30:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19797 states. [2021-11-09 08:30:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19797 to 19614. [2021-11-09 08:30:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19614 states, 19610 states have (on average 1.8023967363590006) internal successors, (35345), 19613 states have internal predecessors, (35345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19614 states to 19614 states and 35345 transitions. [2021-11-09 08:30:07,956 INFO L78 Accepts]: Start accepts. Automaton has 19614 states and 35345 transitions. Word has length 71 [2021-11-09 08:30:07,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:07,957 INFO L470 AbstractCegarLoop]: Abstraction has 19614 states and 35345 transitions. [2021-11-09 08:30:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2021-11-09 08:30:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19614 states and 35345 transitions. [2021-11-09 08:30:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:30:07,972 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:07,972 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:07,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 08:30:07,972 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash -217605030, now seen corresponding path program 1 times [2021-11-09 08:30:07,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:07,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893446063] [2021-11-09 08:30:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:30:08,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:08,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893446063] [2021-11-09 08:30:08,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893446063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:08,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:08,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:30:08,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999132914] [2021-11-09 08:30:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:08,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:08,080 INFO L87 Difference]: Start difference. First operand 19614 states and 35345 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2021-11-09 08:30:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:09,092 INFO L93 Difference]: Finished difference Result 19880 states and 35778 transitions. [2021-11-09 08:30:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 72 [2021-11-09 08:30:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:09,145 INFO L225 Difference]: With dead ends: 19880 [2021-11-09 08:30:09,146 INFO L226 Difference]: Without dead ends: 19656 [2021-11-09 08:30:09,150 INFO L786 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 [2021-11-09 08:30:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19656 states. [2021-11-09 08:30:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19656 to 19608. [2021-11-09 08:30:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19604 states have (on average 1.80228524790859) internal successors, (35332), 19607 states have internal predecessors, (35332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 35332 transitions. [2021-11-09 08:30:10,184 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 35332 transitions. Word has length 72 [2021-11-09 08:30:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 19608 states and 35332 transitions. [2021-11-09 08:30:10,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2021-11-09 08:30:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 35332 transitions. [2021-11-09 08:30:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 08:30:10,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:10,202 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:10,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 08:30:10,202 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:10,203 INFO L85 PathProgramCache]: Analyzing trace with hash -288007535, now seen corresponding path program 1 times [2021-11-09 08:30:10,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:10,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360940534] [2021-11-09 08:30:10,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:10,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:30:10,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:10,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360940534] [2021-11-09 08:30:10,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360940534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:10,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:10,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:10,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301006137] [2021-11-09 08:30:10,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:10,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:10,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:10,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:10,263 INFO L87 Difference]: Start difference. First operand 19608 states and 35332 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2021-11-09 08:30:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:11,485 INFO L93 Difference]: Finished difference Result 38205 states and 68953 transitions. [2021-11-09 08:30:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:11,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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 72 [2021-11-09 08:30:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:11,556 INFO L225 Difference]: With dead ends: 38205 [2021-11-09 08:30:11,556 INFO L226 Difference]: Without dead ends: 28379 [2021-11-09 08:30:11,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28379 states. [2021-11-09 08:30:12,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28379 to 19370. [2021-11-09 08:30:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19370 states, 19366 states have (on average 1.8032118145202933) internal successors, (34921), 19369 states have internal predecessors, (34921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19370 states to 19370 states and 34921 transitions. [2021-11-09 08:30:12,608 INFO L78 Accepts]: Start accepts. Automaton has 19370 states and 34921 transitions. Word has length 72 [2021-11-09 08:30:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:12,608 INFO L470 AbstractCegarLoop]: Abstraction has 19370 states and 34921 transitions. [2021-11-09 08:30:12,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2021-11-09 08:30:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 19370 states and 34921 transitions. [2021-11-09 08:30:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 08:30:12,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:12,618 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:12,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 08:30:12,618 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash 819887912, now seen corresponding path program 1 times [2021-11-09 08:30:12,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:12,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964322785] [2021-11-09 08:30:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:12,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:30:12,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:12,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964322785] [2021-11-09 08:30:12,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964322785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:12,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:12,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 08:30:12,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641897786] [2021-11-09 08:30:12,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:30:12,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:12,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:30:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:30:12,756 INFO L87 Difference]: Start difference. First operand 19370 states and 34921 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:14,141 INFO L93 Difference]: Finished difference Result 19911 states and 35769 transitions. [2021-11-09 08:30:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 08:30:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-09 08:30:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:14,174 INFO L225 Difference]: With dead ends: 19911 [2021-11-09 08:30:14,174 INFO L226 Difference]: Without dead ends: 19757 [2021-11-09 08:30:14,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-09 08:30:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19757 states. [2021-11-09 08:30:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19757 to 19388. [2021-11-09 08:30:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19388 states, 19384 states have (on average 1.8028786628146924) internal successors, (34947), 19387 states have internal predecessors, (34947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19388 states to 19388 states and 34947 transitions. [2021-11-09 08:30:15,106 INFO L78 Accepts]: Start accepts. Automaton has 19388 states and 34947 transitions. Word has length 74 [2021-11-09 08:30:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:15,106 INFO L470 AbstractCegarLoop]: Abstraction has 19388 states and 34947 transitions. [2021-11-09 08:30:15,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19388 states and 34947 transitions. [2021-11-09 08:30:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 08:30:15,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:15,117 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:15,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 08:30:15,118 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash 12374643, now seen corresponding path program 1 times [2021-11-09 08:30:15,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:15,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159759283] [2021-11-09 08:30:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:15,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:30:15,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:15,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159759283] [2021-11-09 08:30:15,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159759283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:15,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:15,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:30:15,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522426344] [2021-11-09 08:30:15,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:30:15,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:30:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:30:15,240 INFO L87 Difference]: Start difference. First operand 19388 states and 34947 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:16,875 INFO L93 Difference]: Finished difference Result 20307 states and 36377 transitions. [2021-11-09 08:30:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 08:30:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 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 75 [2021-11-09 08:30:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:16,909 INFO L225 Difference]: With dead ends: 20307 [2021-11-09 08:30:16,909 INFO L226 Difference]: Without dead ends: 20145 [2021-11-09 08:30:16,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:30:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2021-11-09 08:30:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 19615. [2021-11-09 08:30:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19615 states, 19611 states have (on average 1.800724083422569) internal successors, (35314), 19614 states have internal predecessors, (35314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19615 states to 19615 states and 35314 transitions. [2021-11-09 08:30:17,779 INFO L78 Accepts]: Start accepts. Automaton has 19615 states and 35314 transitions. Word has length 75 [2021-11-09 08:30:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:17,779 INFO L470 AbstractCegarLoop]: Abstraction has 19615 states and 35314 transitions. [2021-11-09 08:30:17,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 19615 states and 35314 transitions. [2021-11-09 08:30:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 08:30:17,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:17,789 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:17,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 08:30:17,789 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash 577407, now seen corresponding path program 1 times [2021-11-09 08:30:17,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:17,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058753776] [2021-11-09 08:30:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:17,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:17,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:17,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058753776] [2021-11-09 08:30:17,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058753776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:17,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859744035] [2021-11-09 08:30:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:17,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:17,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:17,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 08:30:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:18,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:18,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:18,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859744035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:18,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:18,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 15 [2021-11-09 08:30:18,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183775458] [2021-11-09 08:30:18,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 08:30:18,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 08:30:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:30:18,504 INFO L87 Difference]: Start difference. First operand 19615 states and 35314 transitions. Second operand has 15 states, 15 states have (on average 9.8) internal successors, (147), 15 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:26,769 INFO L93 Difference]: Finished difference Result 75937 states and 133565 transitions. [2021-11-09 08:30:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-09 08:30:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.8) internal successors, (147), 15 states have internal predecessors, (147), 0 states have call successors, (0), 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 75 [2021-11-09 08:30:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:26,885 INFO L225 Difference]: With dead ends: 75937 [2021-11-09 08:30:26,885 INFO L226 Difference]: Without dead ends: 75454 [2021-11-09 08:30:26,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5892 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2415, Invalid=12837, Unknown=0, NotChecked=0, Total=15252 [2021-11-09 08:30:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75454 states. [2021-11-09 08:30:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75454 to 42776. [2021-11-09 08:30:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42776 states, 42772 states have (on average 1.7971336388291406) internal successors, (76867), 42775 states have internal predecessors, (76867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42776 states to 42776 states and 76867 transitions. [2021-11-09 08:30:29,171 INFO L78 Accepts]: Start accepts. Automaton has 42776 states and 76867 transitions. Word has length 75 [2021-11-09 08:30:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:29,172 INFO L470 AbstractCegarLoop]: Abstraction has 42776 states and 76867 transitions. [2021-11-09 08:30:29,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.8) internal successors, (147), 15 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 42776 states and 76867 transitions. [2021-11-09 08:30:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 08:30:29,188 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:29,188 INFO L513 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] [2021-11-09 08:30:29,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-09 08:30:29,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f5bce22-13ba-4b0f-8504-8473fd858ac9/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:29,390 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:29,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -266867973, now seen corresponding path program 1 times [2021-11-09 08:30:29,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:29,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19784862] [2021-11-09 08:30:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:29,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:29,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:29,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19784862] [2021-11-09 08:30:29,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19784862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:29,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:29,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:29,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392367629] [2021-11-09 08:30:29,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:29,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:29,446 INFO L87 Difference]: Start difference. First operand 42776 states and 76867 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:32,906 INFO L93 Difference]: Finished difference Result 122042 states and 219779 transitions. [2021-11-09 08:30:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-09 08:30:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:33,071 INFO L225 Difference]: With dead ends: 122042 [2021-11-09 08:30:33,072 INFO L226 Difference]: Without dead ends: 81034 [2021-11-09 08:30:33,113 INFO L786 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 [2021-11-09 08:30:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81034 states. [2021-11-09 08:30:36,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81034 to 79696. [2021-11-09 08:30:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79696 states, 79692 states have (on average 1.8011218190031621) internal successors, (143535), 79695 states have internal predecessors, (143535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79696 states to 79696 states and 143535 transitions. [2021-11-09 08:30:36,906 INFO L78 Accepts]: Start accepts. Automaton has 79696 states and 143535 transitions. Word has length 75 [2021-11-09 08:30:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:36,906 INFO L470 AbstractCegarLoop]: Abstraction has 79696 states and 143535 transitions. [2021-11-09 08:30:36,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 79696 states and 143535 transitions. [2021-11-09 08:30:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 08:30:36,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:36,926 INFO L513 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] [2021-11-09 08:30:36,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 08:30:36,926 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-09 08:30:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 997681953, now seen corresponding path program 1 times [2021-11-09 08:30:36,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:36,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056164905] [2021-11-09 08:30:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:36,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:36,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:36,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056164905] [2021-11-09 08:30:36,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056164905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:36,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:36,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:36,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744314345] [2021-11-09 08:30:36,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:36,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:36,989 INFO L87 Difference]: Start difference. First operand 79696 states and 143535 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:43,503 INFO L93 Difference]: Finished difference Result 232824 states and 419533 transitions. [2021-11-09 08:30:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:43,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-09 08:30:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:43,832 INFO L225 Difference]: With dead ends: 232824 [2021-11-09 08:30:43,832 INFO L226 Difference]: Without dead ends: 155214 [2021-11-09 08:30:43,902 INFO L786 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 [2021-11-09 08:30:44,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155214 states.