./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1b2e6fc3090957bb44fbf381fe29c5adbd1106bdb77e2b6b77c5e6e962ffc5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:31:44,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:31:44,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:31:44,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:31:44,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:31:44,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:31:44,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:31:44,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:31:44,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:31:44,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:31:44,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:31:44,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:31:44,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:31:44,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:31:44,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:31:44,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:31:44,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:31:44,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:31:44,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:31:44,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:31:44,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:31:44,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:31:44,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:31:44,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:31:44,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:31:44,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:31:44,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:31:44,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:31:44,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:31:44,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:31:44,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:31:44,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:31:44,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:31:44,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:31:44,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:31:44,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:31:44,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:31:44,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:31:44,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:31:44,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:31:44,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:31:44,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:31:44,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:31:44,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:31:44,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:31:44,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:31:44,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:31:44,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:31:44,405 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:31:44,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:31:44,405 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:31:44,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:31:44,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:31:44,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:31:44,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:31:44,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:31:44,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:31:44,408 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:31:44,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:31:44,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:31:44,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:31:44,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:31:44,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:31:44,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:31:44,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:31:44,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:31:44,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:31:44,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:31:44,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:31:44,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:31:44,413 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:31:44,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:31:44,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:31:44,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:31:44,414 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_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b2e6fc3090957bb44fbf381fe29c5adbd1106bdb77e2b6b77c5e6e962ffc5b [2021-11-22 14:31:44,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:31:44,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:31:44,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:31:44,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:31:44,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:31:44,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec27_product29.cil.c [2021-11-22 14:31:44,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/data/24ccc2a83/f0561a6ca03c43b8844cb29483661cfd/FLAGfd42582f9 [2021-11-22 14:31:45,371 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:31:45,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c [2021-11-22 14:31:45,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/data/24ccc2a83/f0561a6ca03c43b8844cb29483661cfd/FLAGfd42582f9 [2021-11-22 14:31:45,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/data/24ccc2a83/f0561a6ca03c43b8844cb29483661cfd [2021-11-22 14:31:45,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:31:45,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:31:45,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:31:45,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:31:45,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:31:45,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:31:45" (1/1) ... [2021-11-22 14:31:45,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4490607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:45, skipping insertion in model container [2021-11-22 14:31:45,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:31:45" (1/1) ... [2021-11-22 14:31:45,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:31:45,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:31:46,117 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c[37973,37986] [2021-11-22 14:31:46,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:31:46,341 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:31:46,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/sv-benchmarks/c/product-lines/email_spec27_product29.cil.c[37973,37986] [2021-11-22 14:31:46,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:31:46,476 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:31:46,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46 WrapperNode [2021-11-22 14:31:46,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:31:46,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:31:46,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:31:46,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:31:46,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,662 INFO L137 Inliner]: procedures = 131, calls = 228, calls flagged for inlining = 137, calls inlined = 308, statements flattened = 5260 [2021-11-22 14:31:46,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:31:46,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:31:46,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:31:46,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:31:46,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:31:46,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:31:46,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:31:46,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:31:46,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (1/1) ... [2021-11-22 14:31:46,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:31:46,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:31:46,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:31:46,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:31:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 14:31:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:31:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:31:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:31:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:31:47,287 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:31:47,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:31:49,248 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:31:49,265 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:31:49,266 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:31:49,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:49 BoogieIcfgContainer [2021-11-22 14:31:49,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:31:49,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:31:49,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:31:49,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:31:49,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:31:45" (1/3) ... [2021-11-22 14:31:49,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed69588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:49, skipping insertion in model container [2021-11-22 14:31:49,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:46" (2/3) ... [2021-11-22 14:31:49,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed69588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:49, skipping insertion in model container [2021-11-22 14:31:49,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:49" (3/3) ... [2021-11-22 14:31:49,279 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2021-11-22 14:31:49,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:31:49,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 14:31:49,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:31:49,348 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 14:31:49,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 14:31:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 1147 states, 1140 states have (on average 1.7105263157894737) internal successors, (1950), 1146 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 14:31:49,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:49,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:49,436 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:49,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash -434500632, now seen corresponding path program 1 times [2021-11-22 14:31:49,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:49,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25419711] [2021-11-22 14:31:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:49,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:49,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:49,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25419711] [2021-11-22 14:31:49,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25419711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:49,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:49,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:49,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137138610] [2021-11-22 14:31:49,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:49,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:49,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:49,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:49,916 INFO L87 Difference]: Start difference. First operand has 1147 states, 1140 states have (on average 1.7105263157894737) internal successors, (1950), 1146 states have internal predecessors, (1950), 0 states have call successors, (0), 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 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:50,148 INFO L93 Difference]: Finished difference Result 3388 states and 5774 transitions. [2021-11-22 14:31:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:50,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-22 14:31:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:50,180 INFO L225 Difference]: With dead ends: 3388 [2021-11-22 14:31:50,180 INFO L226 Difference]: Without dead ends: 2211 [2021-11-22 14:31:50,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:50,192 INFO L933 BasicCegarLoop]: 3831 mSDtfsCounter, 1911 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 5737 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:50,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 5737 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2021-11-22 14:31:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 1116. [2021-11-22 14:31:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1110 states have (on average 1.7144144144144144) internal successors, (1903), 1115 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1903 transitions. [2021-11-22 14:31:50,313 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1903 transitions. Word has length 72 [2021-11-22 14:31:50,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:50,314 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1903 transitions. [2021-11-22 14:31:50,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:50,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1903 transitions. [2021-11-22 14:31:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 14:31:50,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:50,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:50,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:31:50,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1026744905, now seen corresponding path program 1 times [2021-11-22 14:31:50,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:50,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160798552] [2021-11-22 14:31:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:50,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:50,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:50,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160798552] [2021-11-22 14:31:50,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160798552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:50,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:50,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:31:50,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385012817] [2021-11-22 14:31:50,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:50,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:31:50,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:31:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:31:50,425 INFO L87 Difference]: Start difference. First operand 1116 states and 1903 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:50,688 INFO L93 Difference]: Finished difference Result 3289 states and 5617 transitions. [2021-11-22 14:31:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:31:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 [2021-11-22 14:31:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:50,703 INFO L225 Difference]: With dead ends: 3289 [2021-11-22 14:31:50,703 INFO L226 Difference]: Without dead ends: 2196 [2021-11-22 14:31:50,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:31:50,707 INFO L933 BasicCegarLoop]: 3714 mSDtfsCounter, 3760 mSDsluCounter, 5563 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3760 SdHoareTripleChecker+Valid, 9277 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:50,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3760 Valid, 9277 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:31:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-11-22 14:31:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1116. [2021-11-22 14:31:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1110 states have (on average 1.7135135135135136) internal successors, (1902), 1115 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1902 transitions. [2021-11-22 14:31:50,759 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1902 transitions. Word has length 74 [2021-11-22 14:31:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:50,760 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1902 transitions. [2021-11-22 14:31:50,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1902 transitions. [2021-11-22 14:31:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:31:50,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:50,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:50,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:31:50,763 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -353574322, now seen corresponding path program 1 times [2021-11-22 14:31:50,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:50,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582472285] [2021-11-22 14:31:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:50,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:50,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:50,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582472285] [2021-11-22 14:31:50,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582472285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:50,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:50,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:50,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374020524] [2021-11-22 14:31:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:50,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:50,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:50,839 INFO L87 Difference]: Start difference. First operand 1116 states and 1902 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) [2021-11-22 14:31:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:50,956 INFO L93 Difference]: Finished difference Result 2211 states and 3775 transitions. [2021-11-22 14:31:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:50,957 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 [2021-11-22 14:31:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:50,964 INFO L225 Difference]: With dead ends: 2211 [2021-11-22 14:31:50,964 INFO L226 Difference]: Without dead ends: 1123 [2021-11-22 14:31:50,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:50,972 INFO L933 BasicCegarLoop]: 1906 mSDtfsCounter, 1875 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:50,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1875 Valid, 1928 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-22 14:31:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1116. [2021-11-22 14:31:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1110 states have (on average 1.7108108108108109) internal successors, (1899), 1115 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1899 transitions. [2021-11-22 14:31:51,025 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1899 transitions. Word has length 75 [2021-11-22 14:31:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:51,027 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1899 transitions. [2021-11-22 14:31:51,027 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) [2021-11-22 14:31:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1899 transitions. [2021-11-22 14:31:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 14:31:51,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:51,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:51,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:31:51,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:51,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:51,032 INFO L85 PathProgramCache]: Analyzing trace with hash -521688397, now seen corresponding path program 1 times [2021-11-22 14:31:51,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:51,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480168268] [2021-11-22 14:31:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:51,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:51,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480168268] [2021-11-22 14:31:51,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480168268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:51,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:51,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:31:51,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378546638] [2021-11-22 14:31:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:51,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:31:51,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:31:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:31:51,135 INFO L87 Difference]: Start difference. First operand 1116 states and 1899 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:51,401 INFO L93 Difference]: Finished difference Result 3276 states and 5594 transitions. [2021-11-22 14:31:51,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:31:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-22 14:31:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:51,416 INFO L225 Difference]: With dead ends: 3276 [2021-11-22 14:31:51,416 INFO L226 Difference]: Without dead ends: 2193 [2021-11-22 14:31:51,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:31:51,428 INFO L933 BasicCegarLoop]: 1883 mSDtfsCounter, 9246 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9246 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:51,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9246 Valid, 3779 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:31:51,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-11-22 14:31:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1116. [2021-11-22 14:31:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1110 states have (on average 1.70990990990991) internal successors, (1898), 1115 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1898 transitions. [2021-11-22 14:31:51,503 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1898 transitions. Word has length 77 [2021-11-22 14:31:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:51,504 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1898 transitions. [2021-11-22 14:31:51,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1898 transitions. [2021-11-22 14:31:51,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 14:31:51,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:51,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:51,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:31:51,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1275332892, now seen corresponding path program 1 times [2021-11-22 14:31:51,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:51,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842102180] [2021-11-22 14:31:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:51,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:51,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:51,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842102180] [2021-11-22 14:31:51,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842102180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:51,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:51,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:31:51,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231607234] [2021-11-22 14:31:51,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:51,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:31:51,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:31:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:31:51,595 INFO L87 Difference]: Start difference. First operand 1116 states and 1898 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:51,851 INFO L93 Difference]: Finished difference Result 3283 states and 5600 transitions. [2021-11-22 14:31:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:31:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 14:31:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:51,866 INFO L225 Difference]: With dead ends: 3283 [2021-11-22 14:31:51,866 INFO L226 Difference]: Without dead ends: 2200 [2021-11-22 14:31:51,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:31:51,869 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 9250 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9250 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:51,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9250 Valid, 3782 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:31:51,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2021-11-22 14:31:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1116. [2021-11-22 14:31:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1110 states have (on average 1.709009009009009) internal successors, (1897), 1115 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1897 transitions. [2021-11-22 14:31:51,959 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1897 transitions. Word has length 78 [2021-11-22 14:31:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:51,959 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1897 transitions. [2021-11-22 14:31:51,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1897 transitions. [2021-11-22 14:31:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 14:31:51,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:51,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:51,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:31:51,969 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash 682374318, now seen corresponding path program 1 times [2021-11-22 14:31:51,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:51,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432497855] [2021-11-22 14:31:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:51,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:52,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:52,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432497855] [2021-11-22 14:31:52,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432497855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:52,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:52,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:52,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183852933] [2021-11-22 14:31:52,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:52,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:52,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:52,079 INFO L87 Difference]: Start difference. First operand 1116 states and 1897 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:52,154 INFO L93 Difference]: Finished difference Result 1938 states and 3278 transitions. [2021-11-22 14:31:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-22 14:31:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:52,162 INFO L225 Difference]: With dead ends: 1938 [2021-11-22 14:31:52,163 INFO L226 Difference]: Without dead ends: 1119 [2021-11-22 14:31:52,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:52,165 INFO L933 BasicCegarLoop]: 1895 mSDtfsCounter, 1 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:52,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3788 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-22 14:31:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1118. [2021-11-22 14:31:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1112 states have (on average 1.7077338129496402) internal successors, (1899), 1117 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 1899 transitions. [2021-11-22 14:31:52,250 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 1899 transitions. Word has length 79 [2021-11-22 14:31:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:52,251 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 1899 transitions. [2021-11-22 14:31:52,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 1899 transitions. [2021-11-22 14:31:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-22 14:31:52,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:52,253 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:52,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:31:52,254 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1900388304, now seen corresponding path program 1 times [2021-11-22 14:31:52,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:52,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162012058] [2021-11-22 14:31:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:52,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:52,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:52,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162012058] [2021-11-22 14:31:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162012058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:52,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:52,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569596608] [2021-11-22 14:31:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:52,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:52,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:52,308 INFO L87 Difference]: Start difference. First operand 1118 states and 1899 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:52,459 INFO L93 Difference]: Finished difference Result 3226 states and 5507 transitions. [2021-11-22 14:31:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-22 14:31:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:52,473 INFO L225 Difference]: With dead ends: 3226 [2021-11-22 14:31:52,474 INFO L226 Difference]: Without dead ends: 2146 [2021-11-22 14:31:52,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:52,477 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1847 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:52,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1847 Valid, 3694 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2021-11-22 14:31:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1327. [2021-11-22 14:31:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1321 states have (on average 1.7236941710825133) internal successors, (2277), 1326 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 2277 transitions. [2021-11-22 14:31:52,569 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 2277 transitions. Word has length 85 [2021-11-22 14:31:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:52,569 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 2277 transitions. [2021-11-22 14:31:52,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 2277 transitions. [2021-11-22 14:31:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 14:31:52,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:52,573 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:52,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:31:52,573 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1292438974, now seen corresponding path program 1 times [2021-11-22 14:31:52,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:52,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540790209] [2021-11-22 14:31:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:52,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:52,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:52,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540790209] [2021-11-22 14:31:52,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540790209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:31:52,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074556519] [2021-11-22 14:31:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:52,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:31:52,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:31:52,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:31:52,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:31:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:52,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:31:52,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:31:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:53,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:31:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:53,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074556519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:31:53,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:31:53,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 14:31:53,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096216605] [2021-11-22 14:31:53,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:31:53,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:31:53,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:31:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:31:53,196 INFO L87 Difference]: Start difference. First operand 1327 states and 2277 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:53,605 INFO L93 Difference]: Finished difference Result 5806 states and 9968 transitions. [2021-11-22 14:31:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:31:53,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 14:31:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:53,638 INFO L225 Difference]: With dead ends: 5806 [2021-11-22 14:31:53,638 INFO L226 Difference]: Without dead ends: 4987 [2021-11-22 14:31:53,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:31:53,642 INFO L933 BasicCegarLoop]: 1895 mSDtfsCounter, 7388 mSDsluCounter, 9377 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7388 SdHoareTripleChecker+Valid, 11272 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:53,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7388 Valid, 11272 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2021-11-22 14:31:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 2530. [2021-11-22 14:31:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2524 states have (on average 1.7646592709984152) internal successors, (4454), 2529 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4454 transitions. [2021-11-22 14:31:53,849 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4454 transitions. Word has length 86 [2021-11-22 14:31:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:53,849 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4454 transitions. [2021-11-22 14:31:53,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4454 transitions. [2021-11-22 14:31:53,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-22 14:31:53,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:53,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:53,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:31:54,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dce835ca-b0a1-4ee9-8bca-68a2aac7d8a2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-22 14:31:54,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1316690517, now seen corresponding path program 1 times [2021-11-22 14:31:54,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:54,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685250615] [2021-11-22 14:31:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:54,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:54,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685250615] [2021-11-22 14:31:54,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685250615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:54,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:54,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:54,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118338466] [2021-11-22 14:31:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:54,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:54,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:54,134 INFO L87 Difference]: Start difference. First operand 2530 states and 4454 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:54,373 INFO L93 Difference]: Finished difference Result 6979 states and 12298 transitions. [2021-11-22 14:31:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-22 14:31:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:54,403 INFO L225 Difference]: With dead ends: 6979 [2021-11-22 14:31:54,403 INFO L226 Difference]: Without dead ends: 4549 [2021-11-22 14:31:54,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:54,409 INFO L933 BasicCegarLoop]: 1897 mSDtfsCounter, 1845 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:54,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 3789 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2021-11-22 14:31:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 3730. [2021-11-22 14:31:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3724 states have (on average 1.7771213748657357) internal successors, (6618), 3729 states have internal predecessors, (6618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 6618 transitions. [2021-11-22 14:31:54,695 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 6618 transitions. Word has length 92 [2021-11-22 14:31:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:54,695 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 6618 transitions. [2021-11-22 14:31:54,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 6618 transitions. [2021-11-22 14:31:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-22 14:31:54,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:54,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:54,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:31:54,705 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:54,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash -546885611, now seen corresponding path program 1 times [2021-11-22 14:31:54,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:54,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781880235] [2021-11-22 14:31:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:54,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:54,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:54,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781880235] [2021-11-22 14:31:54,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781880235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:54,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:54,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:54,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058914202] [2021-11-22 14:31:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:54,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:54,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:54,763 INFO L87 Difference]: Start difference. First operand 3730 states and 6618 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:55,105 INFO L93 Difference]: Finished difference Result 9978 states and 17720 transitions. [2021-11-22 14:31:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:55,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-22 14:31:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:55,126 INFO L225 Difference]: With dead ends: 9978 [2021-11-22 14:31:55,126 INFO L226 Difference]: Without dead ends: 6438 [2021-11-22 14:31:55,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:55,132 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1843 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1843 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:55,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1843 Valid, 3780 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:55,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2021-11-22 14:31:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 5619. [2021-11-22 14:31:55,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5619 states, 5613 states have (on average 1.7862105825761625) internal successors, (10026), 5618 states have internal predecessors, (10026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 10026 transitions. [2021-11-22 14:31:55,454 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 10026 transitions. Word has length 93 [2021-11-22 14:31:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:55,454 INFO L470 AbstractCegarLoop]: Abstraction has 5619 states and 10026 transitions. [2021-11-22 14:31:55,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 10026 transitions. [2021-11-22 14:31:55,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 14:31:55,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:55,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:55,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:31:55,467 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 622681779, now seen corresponding path program 1 times [2021-11-22 14:31:55,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:55,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726329634] [2021-11-22 14:31:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:55,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:55,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726329634] [2021-11-22 14:31:55,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726329634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:55,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:55,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:55,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613424817] [2021-11-22 14:31:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:55,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:55,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:55,517 INFO L87 Difference]: Start difference. First operand 5619 states and 10026 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:55,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:55,957 INFO L93 Difference]: Finished difference Result 14206 states and 25345 transitions. [2021-11-22 14:31:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-22 14:31:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:55,982 INFO L225 Difference]: With dead ends: 14206 [2021-11-22 14:31:55,983 INFO L226 Difference]: Without dead ends: 9134 [2021-11-22 14:31:55,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:55,992 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1841 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:55,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 3732 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2021-11-22 14:31:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 8315. [2021-11-22 14:31:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8315 states, 8309 states have (on average 1.7898664099169574) internal successors, (14872), 8314 states have internal predecessors, (14872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 14872 transitions. [2021-11-22 14:31:56,473 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 14872 transitions. Word has length 94 [2021-11-22 14:31:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:56,473 INFO L470 AbstractCegarLoop]: Abstraction has 8315 states and 14872 transitions. [2021-11-22 14:31:56,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 14872 transitions. [2021-11-22 14:31:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-22 14:31:56,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:56,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:56,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:31:56,493 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1961235165, now seen corresponding path program 1 times [2021-11-22 14:31:56,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:56,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778677656] [2021-11-22 14:31:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:56,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:56,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:56,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778677656] [2021-11-22 14:31:56,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778677656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:56,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:56,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:56,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133787050] [2021-11-22 14:31:56,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:56,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:56,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:56,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:56,552 INFO L87 Difference]: Start difference. First operand 8315 states and 14872 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:57,228 INFO L93 Difference]: Finished difference Result 20569 states and 36797 transitions. [2021-11-22 14:31:57,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:57,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-22 14:31:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:57,271 INFO L225 Difference]: With dead ends: 20569 [2021-11-22 14:31:57,271 INFO L226 Difference]: Without dead ends: 13375 [2021-11-22 14:31:57,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:57,287 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1839 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:57,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 3732 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13375 states. [2021-11-22 14:31:58,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13375 to 12556. [2021-11-22 14:31:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12556 states, 12550 states have (on average 1.7914741035856574) internal successors, (22483), 12555 states have internal predecessors, (22483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12556 states to 12556 states and 22483 transitions. [2021-11-22 14:31:58,143 INFO L78 Accepts]: Start accepts. Automaton has 12556 states and 22483 transitions. Word has length 95 [2021-11-22 14:31:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:31:58,143 INFO L470 AbstractCegarLoop]: Abstraction has 12556 states and 22483 transitions. [2021-11-22 14:31:58,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12556 states and 22483 transitions. [2021-11-22 14:31:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-22 14:31:58,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:31:58,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:31:58,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:31:58,169 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:31:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:31:58,170 INFO L85 PathProgramCache]: Analyzing trace with hash -797255773, now seen corresponding path program 1 times [2021-11-22 14:31:58,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:31:58,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195719503] [2021-11-22 14:31:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:31:58,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:31:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:31:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:31:58,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:31:58,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195719503] [2021-11-22 14:31:58,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195719503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:31:58,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:31:58,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:31:58,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036174720] [2021-11-22 14:31:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:31:58,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:31:58,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:31:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:31:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:58,226 INFO L87 Difference]: Start difference. First operand 12556 states and 22483 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:31:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:31:59,086 INFO L93 Difference]: Finished difference Result 32443 states and 58151 transitions. [2021-11-22 14:31:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:31:59,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-22 14:31:59,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:31:59,152 INFO L225 Difference]: With dead ends: 32443 [2021-11-22 14:31:59,152 INFO L226 Difference]: Without dead ends: 21456 [2021-11-22 14:31:59,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:31:59,174 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1837 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:31:59,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 3788 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:31:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21456 states. [2021-11-22 14:32:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21456 to 20637. [2021-11-22 14:32:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20637 states, 20631 states have (on average 1.7925451989724202) internal successors, (36982), 20636 states have internal predecessors, (36982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20637 states to 20637 states and 36982 transitions. [2021-11-22 14:32:00,524 INFO L78 Accepts]: Start accepts. Automaton has 20637 states and 36982 transitions. Word has length 96 [2021-11-22 14:32:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:00,525 INFO L470 AbstractCegarLoop]: Abstraction has 20637 states and 36982 transitions. [2021-11-22 14:32:00,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 20637 states and 36982 transitions. [2021-11-22 14:32:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 14:32:00,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:00,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:32:00,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 14:32:00,567 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:32:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1053979699, now seen corresponding path program 1 times [2021-11-22 14:32:00,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:00,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965982566] [2021-11-22 14:32:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:00,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:00,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:00,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965982566] [2021-11-22 14:32:00,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965982566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:00,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:00,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:32:00,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125990995] [2021-11-22 14:32:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:00,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:32:00,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:00,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:32:00,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:00,645 INFO L87 Difference]: Start difference. First operand 20637 states and 36982 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:32:02,238 INFO L93 Difference]: Finished difference Result 53899 states and 96872 transitions. [2021-11-22 14:32:02,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:32:02,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-22 14:32:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:32:02,358 INFO L225 Difference]: With dead ends: 53899 [2021-11-22 14:32:02,358 INFO L226 Difference]: Without dead ends: 35696 [2021-11-22 14:32:02,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:02,389 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1835 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1835 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:32:02,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1835 Valid, 3779 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:32:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35696 states. [2021-11-22 14:32:04,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35696 to 34877. [2021-11-22 14:32:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34877 states, 34871 states have (on average 1.7963350635198303) internal successors, (62640), 34876 states have internal predecessors, (62640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34877 states to 34877 states and 62640 transitions. [2021-11-22 14:32:04,393 INFO L78 Accepts]: Start accepts. Automaton has 34877 states and 62640 transitions. Word has length 97 [2021-11-22 14:32:04,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:04,393 INFO L470 AbstractCegarLoop]: Abstraction has 34877 states and 62640 transitions. [2021-11-22 14:32:04,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:04,394 INFO L276 IsEmpty]: Start isEmpty. Operand 34877 states and 62640 transitions. [2021-11-22 14:32:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 14:32:04,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:04,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:32:04,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 14:32:04,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:32:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2072958209, now seen corresponding path program 1 times [2021-11-22 14:32:04,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595272821] [2021-11-22 14:32:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:04,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:04,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:04,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595272821] [2021-11-22 14:32:04,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595272821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:04,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:04,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:32:04,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554311197] [2021-11-22 14:32:04,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:04,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:32:04,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:32:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:04,513 INFO L87 Difference]: Start difference. First operand 34877 states and 62640 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:06,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:32:06,543 INFO L93 Difference]: Finished difference Result 87096 states and 156036 transitions. [2021-11-22 14:32:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:32:06,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-22 14:32:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:32:06,748 INFO L225 Difference]: With dead ends: 87096 [2021-11-22 14:32:06,749 INFO L226 Difference]: Without dead ends: 56831 [2021-11-22 14:32:06,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:06,795 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1833 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:32:06,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 3705 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:32:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56831 states. [2021-11-22 14:32:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56831 to 56012. [2021-11-22 14:32:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56012 states, 56006 states have (on average 1.786308609791808) internal successors, (100044), 56011 states have internal predecessors, (100044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56012 states to 56012 states and 100044 transitions. [2021-11-22 14:32:08,897 INFO L78 Accepts]: Start accepts. Automaton has 56012 states and 100044 transitions. Word has length 98 [2021-11-22 14:32:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:08,898 INFO L470 AbstractCegarLoop]: Abstraction has 56012 states and 100044 transitions. [2021-11-22 14:32:08,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 56012 states and 100044 transitions. [2021-11-22 14:32:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 14:32:08,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:08,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:32:08,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 14:32:08,939 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:32:08,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash 965837567, now seen corresponding path program 1 times [2021-11-22 14:32:08,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:08,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165583216] [2021-11-22 14:32:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:08,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:09,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:09,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165583216] [2021-11-22 14:32:09,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165583216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:09,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:09,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:32:09,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588566776] [2021-11-22 14:32:09,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:09,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:32:09,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:32:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:09,003 INFO L87 Difference]: Start difference. First operand 56012 states and 100044 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:32:11,949 INFO L93 Difference]: Finished difference Result 144247 states and 257631 transitions. [2021-11-22 14:32:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:32:11,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-22 14:32:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:32:12,188 INFO L225 Difference]: With dead ends: 144247 [2021-11-22 14:32:12,190 INFO L226 Difference]: Without dead ends: 95115 [2021-11-22 14:32:12,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:12,237 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1831 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:32:12,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 3732 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:32:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95115 states. [2021-11-22 14:32:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95115 to 94296. [2021-11-22 14:32:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94296 states, 94290 states have (on average 1.7827235125676106) internal successors, (168093), 94295 states have internal predecessors, (168093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94296 states to 94296 states and 168093 transitions. [2021-11-22 14:32:15,975 INFO L78 Accepts]: Start accepts. Automaton has 94296 states and 168093 transitions. Word has length 99 [2021-11-22 14:32:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:15,975 INFO L470 AbstractCegarLoop]: Abstraction has 94296 states and 168093 transitions. [2021-11-22 14:32:15,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 94296 states and 168093 transitions. [2021-11-22 14:32:16,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 14:32:16,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:16,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:32:16,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 14:32:16,016 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:32:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:16,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2042336761, now seen corresponding path program 1 times [2021-11-22 14:32:16,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:16,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245964049] [2021-11-22 14:32:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:16,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:16,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245964049] [2021-11-22 14:32:16,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245964049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:16,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:16,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:32:16,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627564497] [2021-11-22 14:32:16,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:16,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:32:16,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:16,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:32:16,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:16,063 INFO L87 Difference]: Start difference. First operand 94296 states and 168093 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:32:21,008 INFO L93 Difference]: Finished difference Result 260069 states and 464758 transitions. [2021-11-22 14:32:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:32:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-22 14:32:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:32:21,402 INFO L225 Difference]: With dead ends: 260069 [2021-11-22 14:32:21,402 INFO L226 Difference]: Without dead ends: 174593 [2021-11-22 14:32:21,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:21,532 INFO L933 BasicCegarLoop]: 1896 mSDtfsCounter, 1829 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:32:21,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 3779 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:32:21,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174593 states. [2021-11-22 14:32:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174593 to 173774. [2021-11-22 14:32:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173774 states, 173768 states have (on average 1.7852711661525713) internal successors, (310223), 173773 states have internal predecessors, (310223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173774 states to 173774 states and 310223 transitions. [2021-11-22 14:32:28,340 INFO L78 Accepts]: Start accepts. Automaton has 173774 states and 310223 transitions. Word has length 100 [2021-11-22 14:32:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:32:28,340 INFO L470 AbstractCegarLoop]: Abstraction has 173774 states and 310223 transitions. [2021-11-22 14:32:28,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:32:28,341 INFO L276 IsEmpty]: Start isEmpty. Operand 173774 states and 310223 transitions. [2021-11-22 14:32:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 14:32:28,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:32:28,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:32:28,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 14:32:28,389 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:32:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:32:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash -297459377, now seen corresponding path program 1 times [2021-11-22 14:32:28,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:32:28,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703799307] [2021-11-22 14:32:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:32:28,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:32:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:32:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:32:28,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:32:28,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703799307] [2021-11-22 14:32:28,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703799307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:32:28,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:32:28,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:32:28,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179552260] [2021-11-22 14:32:28,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:32:28,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:32:28,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:32:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:32:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:32:28,436 INFO L87 Difference]: Start difference. First operand 173774 states and 310223 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)